{"title":"Forespar Marelon Plumbing — Catalogue","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v2.css\"\u003e\u003cstyle\u003e.mpom .om-tbl.nw td+td{white-space:nowrap}.mpom details.om-dd{position:relative;margin:0}.mpom details.om-dd\u003esummary{list-style:none;cursor:pointer}.mpom details.om-dd\u003esummary::-webkit-details-marker{display:none}.mpom .om-dd-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:360px;background:#fff;border:1px solid #e3e5e8;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.14);z-index:30;padding:6px}.mpom .om-dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:10px 12px;border-radius:4px;font-size:14px;font-weight:600;color:#2a2b2a!important;text-decoration:none!important}.mpom .om-dd-menu a:hover{background:#f5f6f8}.mpom .om-dd-menu small{font-weight:400;color:#5f6368;white-space:nowrap}\u003c\/style\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag ss\"\u003eCATALOGUE\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eFind the right Marelon seacock, valve, thru-hull or vented loop: catalogue contents, Pro Series part number coding and critical dimensions, retail seacock kits and the vented loop range.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eForespar Marelon Plumbing Catalogue\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 17 pages · 2.9 MB\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\" style=\"border-bottom:0\"\u003e\n\u003cspan\u003eLanguage\u003c\/span\u003e\u003cb\u003eEnglish\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-acts\"\u003e\n\u003cdetails class=\"om-dd\"\u003e\u003csummary class=\"om-btn dl\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 4v11\"\u003e\u003c\/path\u003e\u003cpath d=\"m7 10 5 5 5-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 20h14\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Download PDF ▾\u003c\/summary\u003e\u003cdiv class=\"om-dd-menu\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Forespar-Marelon-Plumbing-Catalogue.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eCatalogue\u003c\/span\u003e\u003csmall\u003ePDF · 17 p.\u003c\/small\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Forespar-Marelon-Plumbing-Summary.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eMarelon summary\u003c\/span\u003e\u003csmall\u003ePDF · 4 p.\u003c\/small\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003ca class=\"om-btn buy\" href=\"\/collections\/forespar-sailboat-marine-plumbing\"\u003eView Collection\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-contents\"\u003eContents\u003c\/a\u003e\u003ca href=\"#om-pro\"\u003ePro Series Codes\u003c\/a\u003e\u003ca href=\"#om-dims\"\u003eDimensions\u003c\/a\u003e\u003ca href=\"#om-std\"\u003eStandard Valves\u003c\/a\u003e\u003ca href=\"#om-retail\"\u003eRetail Kits \u0026amp; Options\u003c\/a\u003e\u003ca href=\"#om-loops\"\u003eVented Loops\u003c\/a\u003e\u003ca href=\"#om-install\"\u003eInstallation\u003c\/a\u003e\u003ca href=\"#om-products\"\u003eProducts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Forespar-Marelon-Plumbing-Catalogue-Cover.png\" alt=\"Forespar Marelon Plumbing — Catalogue\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-contents\"\u003e\n\u003ch2 class=\"om-h\"\u003eWhat the Catalogue Covers\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCatalogue pages\u003c\/th\u003e\n\u003cth\u003eContent\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1–4\u003c\/td\u003e\n\u003ctd\u003eContents, the Marelon advantage, benefits, Pro Series overview and seacock installation note\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5–6\u003c\/td\u003e\n\u003ctd\u003eCustom OEM Pro Series valves: how to build a part number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7–8\u003c\/td\u003e\n\u003ctd\u003eThread compatibility, Pro Series hose barb valve technical data, threaded base (inline) Pro Series valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9–10\u003c\/td\u003e\n\u003ctd\u003eStandard Pro Series valves \/ seacocks: common configurations ready for order\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11–12\u003c\/td\u003e\n\u003ctd\u003eEngine flush-out valve, anti-venturi thru-hull, locking handle, retail seacock pack; Y-valves and Flowtech racing valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13–16\u003c\/td\u003e\n\u003ctd\u003eMF 849 flange seacocks, MF 850 ball valves, thru-hull connectors (250 \/ 251 \/ 253 \/ 254 series) and fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e17–18\u003c\/td\u003e\n\u003ctd\u003eY connectors, vented loops, water strainers (MF 810, Titan T-Strainer, T-150)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e19–20\u003c\/td\u003e\n\u003ctd\u003eGarboard and deck drains, deck fills, drain plugs, sink wastes, tank vent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e21–22\u003c\/td\u003e\n\u003ctd\u003eROV remote operated valve motors (OEM) and valve lubricants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e23–28\u003c\/td\u003e\n\u003ctd\u003eMarelon parts \u0026amp; product index\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e29\u003c\/td\u003e\n\u003ctd\u003eMarelon Partners Program (boat builders)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eThe PDF is laid out in two-page spreads; page numbers above are the ones printed on the catalogue pages. The extra download is a 4-page Marelon summary with the most popular Pro Series, 850\/849 and thru-hull part numbers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-pro\"\u003e\n\u003ch2 class=\"om-h\"\u003eBuilding a Pro Series Part Number\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEvery Pro Series valve number starts with \u003cstrong\u003e93\u003c\/strong\u003e, followed by Base #, Body #, Top #, Size # and optional modifiers. Example: \u003cstrong\u003e931155\u003c\/strong\u003e = base 1, body 1, top 5, size 5.\u003c\/li\u003e\n\u003cli\u003eSeacock style Pro Series valves come with their own Marelon buttress-thread thru-hull and must be used with it; with the \"N\" modifier they get an NPSM threaded base for most other thru-hulls.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eValve size\u003c\/th\u003e\n\u003cth\u003e1\/2\"\u003c\/th\u003e\n\u003cth\u003e3\/4\"\u003c\/th\u003e\n\u003cth\u003e1\"\u003c\/th\u003e\n\u003cth\u003e1 1\/8\"\u003c\/th\u003e\n\u003cth\u003e1 1\/4\"\u003c\/th\u003e\n\u003cth\u003e1 1\/2\"\u003c\/th\u003e\n\u003cth\u003e2\"\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart # code (sixth digit)\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e0-4\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eBase (third digit)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 – Flanged seacock base with a mushroom head buttress threaded thru-hull\u003c\/li\u003e\n\u003cli\u003e2 – Flanged seacock base with a flush head buttress threaded thru-hull\u003c\/li\u003e\n\u003cli\u003e3 – Female NPSM threaded base\u003c\/li\u003e\n\u003cli\u003e4 – Straight barbed tailpipe\u003c\/li\u003e\n\u003cli\u003e5 – 90 degree elbow barbed tailpipe\u003c\/li\u003e\n\u003cli\u003e6 – Flanged seacock base with a screened flush head buttress threaded thru-hull\u003c\/li\u003e\n\u003cli\u003e7 – Flanged seacock base with a screened mushroom head buttress threaded thru-hull\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBody (fourth digit)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 – Straight flow, single port with a thru-hull plug for use with the buttress thru-hulls\u003c\/li\u003e\n\u003cli\u003e2 – Double port \"Y\" valve, body barb opposite the handle, with a thru-hull plug\u003c\/li\u003e\n\u003cli\u003e3 – Straight flow, single port with no thru-hull plug; only a flush cap on the handle\u003c\/li\u003e\n\u003cli\u003e4 – Double port \"Y\" valve, body barb opposite the handle, with a flush cap on the handle\u003c\/li\u003e\n\u003cli\u003e5 – Double port \"Dual Drain\", body barb opposite the handle and a thru-hull plug\u003c\/li\u003e\n\u003cli\u003e6 – Double port \"Dual Drain\", body barb opposite the handle and flush cap handle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTop (fifth digit)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3 – Female threads\u003c\/li\u003e\n\u003cli\u003e4 – Straight hose barb tailpipe\u003c\/li\u003e\n\u003cli\u003e5 – Low profile 90 degree elbow hose barb\u003c\/li\u003e\n\u003cli\u003e6 – Blank top only (very few configurations, body 5 \u0026amp; 6 only)\u003c\/li\u003e\n\u003cli\u003e7 – Female garden hose fitting (engine flush-out valves only, body #2 \u0026amp; 4; not shown)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBase options added in this catalogue\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8 – Black thru-hull (standard is white)\u003c\/li\u003e\n\u003cli\u003e9 – Extra long thru-hull (5-3\/4\" long)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eModifiers (suffix)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eN – NPSM straight threaded base (no thru-hull or thru-hull plug)\u003c\/li\u003e\n\u003cli\u003eB – BSP threaded base (1\" to 2\"), no thru-hull or handle plug\u003c\/li\u003e\n\u003cli\u003eC – Chromed mushroom head buttress thread thru-hull\u003c\/li\u003e\n\u003cli\u003eL \/ R – Top elbow faces left \/ right (looking at the top of the valve, handle facing down)\u003c\/li\u003e\n\u003cli\u003eE – For use with an ROV electric motor (OEM only)\u003c\/li\u003e\n\u003cli\u003eV – Anti-venturi style thru-hull (no thru-hull plug)\u003c\/li\u003e\n\u003cli\u003eK – Handle lock-off plate for USCG requirements, standard padlocks (1\" \u0026amp; 2\" valve sizes only)\u003c\/li\u003e\n\u003cli\u003eZ – Large Speed Scoop (1-1\/2\" \u0026amp; 2\" valve sizes only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-dims\"\u003e\n\u003ch2 class=\"om-h\"\u003ePro Series Critical Dimensions\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003cth\u003e1\/2\" (12.7 mm) \/ 3\/4\" (19.05 mm)\u003c\/th\u003e\n\u003cth\u003e1\" (25.4 mm) \/ 1-1\/4\" (31.75 mm)\u003c\/th\u003e\n\u003cth\u003e1-1\/2\" (38.1 mm) \/ 2\" (50.8 mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA – TH head major dia.\u003c\/td\u003e\n\u003ctd\u003e1.7\" (44 mm)\u003c\/td\u003e\n\u003ctd\u003e2.2\" (56 mm)\u003c\/td\u003e\n\u003ctd\u003e2.8\" (71 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB – TH head minor dia.\u003c\/td\u003e\n\u003ctd\u003e1.3\" (32.5 mm)\u003c\/td\u003e\n\u003ctd\u003e1.7\" (43 mm)\u003c\/td\u003e\n\u003ctd\u003e2.2\" (55 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eC – TH thread outside dia.\u003c\/td\u003e\n\u003ctd\u003e1.1\" (28 mm)\u003c\/td\u003e\n\u003ctd\u003e1.6\" (41 mm)\u003c\/td\u003e\n\u003ctd\u003e2.1\" (53 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD – TH inside dia.\u003c\/td\u003e\n\u003ctd\u003e0.6\" (16 mm)\u003c\/td\u003e\n\u003ctd\u003e1.05\" (27 mm)\u003c\/td\u003e\n\u003ctd\u003e1.7\" (42 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eE – TH head thickness\u003c\/td\u003e\n\u003ctd\u003e0.25\" (6 mm)\u003c\/td\u003e\n\u003ctd\u003e0.25\" (6 mm)\u003c\/td\u003e\n\u003ctd\u003e0.24\" (6 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eF – Max TH thread length*\u003c\/td\u003e\n\u003ctd\u003e2.4\" (61 mm)\u003c\/td\u003e\n\u003ctd\u003e2.4\" (61 mm)\u003c\/td\u003e\n\u003ctd\u003e2.4\" (61 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eG – King nut dia.\u003c\/td\u003e\n\u003ctd\u003e3.1\" (80 mm)\u003c\/td\u003e\n\u003ctd\u003e3.75\" (95 mm)\u003c\/td\u003e\n\u003ctd\u003e4.2\" (107 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH – Height with handle\u003c\/td\u003e\n\u003ctd\u003e4.5\" (114 mm)\u003c\/td\u003e\n\u003ctd\u003e6.2\" (157 mm)\u003c\/td\u003e\n\u003ctd\u003e7.6\" (194 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI – Overall body height\u003c\/td\u003e\n\u003ctd\u003e3.2\" (81 mm)\u003c\/td\u003e\n\u003ctd\u003e4\" (102 mm)\u003c\/td\u003e\n\u003ctd\u003e5.25\" (133 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJ – Body width\u003c\/td\u003e\n\u003ctd\u003e1.75\" (45 mm)\u003c\/td\u003e\n\u003ctd\u003e2.3\" (59 mm)\u003c\/td\u003e\n\u003ctd\u003e3.1\" (79 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eK – Barb length\u003c\/td\u003e\n\u003ctd\u003e1.3\" (33 mm)\u003c\/td\u003e\n\u003ctd\u003e1\" barb = 1.25\" long (32 mm); 1-1\/4\" barb = 1.50\" long (38 mm)\u003c\/td\u003e\n\u003ctd\u003e1.5\" (38 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eL – Side barb length\u003c\/td\u003e\n\u003ctd\u003e1.5\" (37 mm)\u003c\/td\u003e\n\u003ctd\u003e1.5\" (38 mm)\u003c\/td\u003e\n\u003ctd\u003e1.75\" (45 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM – Handle length (from axis)\u003c\/td\u003e\n\u003ctd\u003e2.5\" (64 mm)\u003c\/td\u003e\n\u003ctd\u003e4\" (102 mm)\u003c\/td\u003e\n\u003ctd\u003e5\" (127 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eN – Handle stickout\u003c\/td\u003e\n\u003ctd\u003e0.6\" (15 mm)\u003c\/td\u003e\n\u003ctd\u003e0.8\" (20 mm)\u003c\/td\u003e\n\u003ctd\u003e1\" (25.4 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eO – King nut thickness\u003c\/td\u003e\n\u003ctd\u003e0.9\" (23 mm)\u003c\/td\u003e\n\u003ctd\u003e1\" (25 mm)\u003c\/td\u003e\n\u003ctd\u003e1.1\" (28 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprox. weight\u003c\/td\u003e\n\u003ctd\u003e10 oz (0.28 kg)\u003c\/td\u003e\n\u003ctd\u003e18 oz (0.51 kg)\u003c\/td\u003e\n\u003ctd\u003e28 oz (0.79 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003e* Distance from base of seacock to bottom of TH head with minimum safe thread engagement of 5 threads.\u003c\/p\u003e\n\u003ch3\u003eHose barb inner I.D.\u003c\/h3\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eValve size\u003c\/th\u003e\n\u003cth\u003e1\/2\"(12.7mm)\u003c\/th\u003e\n\u003cth\u003e3\/4\"(19.05mm)\u003c\/th\u003e\n\u003cth\u003e1\"(25.4mm)\u003c\/th\u003e\n\u003cth\u003e1-1\/4\"(31.75mm)\u003c\/th\u003e\n\u003cth\u003e1-1\/2\"(38.1mm)\u003c\/th\u003e\n\u003cth\u003e2\"(50.8mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHose barb inner I.D.\u003c\/td\u003e\n\u003ctd\u003e0.462\"(11.73mm)\u003c\/td\u003e\n\u003ctd\u003e0.52\"(13.20mm)\u003c\/td\u003e\n\u003ctd\u003e0.790\"(20.06mm)\u003c\/td\u003e\n\u003ctd\u003e1.05\"(26.67mm)\u003c\/td\u003e\n\u003ctd\u003e1.25\"(31.75mm)\u003c\/td\u003e\n\u003ctd\u003e1.54\"(39.11mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-std\"\u003e\n\u003ch2 class=\"om-h\"\u003eStandard Pro Series Valves \u0026amp; Seacocks\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Forespar-Marelon-Standard-Pro-Series-Valve-Configurations.png\" alt=\"Forespar Marelon Standard Pro Series valve and seacock configurations with part numbers by thru-hull type (mushroom, flush, screened)\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp class=\"om-note\"\u003eCommon port styles, directions and flow patterns, pre-assembled and stocked. Each configuration is listed for mushroom, flush, screened mushroom and screened flush thru-hulls. Extra-long buttress thread thru-hulls are available for all Pro Series valves.\u003c\/p\u003e\n\u003ch3\u003eThreaded base (inline) Pro Series valves\u003c\/h3\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eFem. thread base \/ fem. thread top\u003c\/th\u003e\n\u003cth\u003eFem. thread base \/ straight barb top\u003c\/th\u003e\n\u003cth\u003eFem. thread base \/ 90° barb top\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\/2\"(12.7mm)\u003c\/td\u003e\n\u003ctd\u003e933332\u003c\/td\u003e\n\u003ctd\u003e933342\u003c\/td\u003e\n\u003ctd\u003e933352\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\/4\"(19.05mm)\u003c\/td\u003e\n\u003ctd\u003e933333\u003c\/td\u003e\n\u003ctd\u003e933343\u003c\/td\u003e\n\u003ctd\u003e933353\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\"(25.4mm)\u003c\/td\u003e\n\u003ctd\u003e933334\u003c\/td\u003e\n\u003ctd\u003e933344\u003c\/td\u003e\n\u003ctd\u003e933354\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1-1\/4\"(31.75mm)\u003c\/td\u003e\n\u003ctd\u003e933335\u003c\/td\u003e\n\u003ctd\u003e933345\u003c\/td\u003e\n\u003ctd\u003e933355\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1-1\/2\"(38.1mm)\u003c\/td\u003e\n\u003ctd\u003e933336\u003c\/td\u003e\n\u003ctd\u003e933346\u003c\/td\u003e\n\u003ctd\u003e933356\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\"(50.8mm)\u003c\/td\u003e\n\u003ctd\u003e933338\u003c\/td\u003e\n\u003ctd\u003e933348\u003c\/td\u003e\n\u003ctd\u003e933358\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-retail\"\u003e\n\u003ch2 class=\"om-h\"\u003eRetail Seacock Pack \u0026amp; Pro Series Options\u003c\/h2\u003e\n\u003ch3\u003eSeacock, thru-hull \u0026amp; connector retail pack\u003c\/h3\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eHose barb OD\u003c\/th\u003e\n\u003cth\u003eThru-hull OD\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e904042ABYC\u003c\/td\u003e\n\u003ctd\u003eValve Replacement Kit\u003c\/td\u003e\n\u003ctd\u003e1\/2\" 13mm\u003c\/td\u003e\n\u003ctd\u003e1-1\/4\" 32mm\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-904042abyc\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e904043ABYC\u003c\/td\u003e\n\u003ctd\u003eValve Replacement Kit\u003c\/td\u003e\n\u003ctd\u003e3\/4\" 19mm\u003c\/td\u003e\n\u003ctd\u003e1-1\/4\" 32mm\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-904043abyc\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e904044ABYC\u003c\/td\u003e\n\u003ctd\u003eValve Replacement Kit\u003c\/td\u003e\n\u003ctd\u003e1\" 25mm\u003c\/td\u003e\n\u003ctd\u003e1-3\/4\" 44mm\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-904044abyc\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e904045ABYC\u003c\/td\u003e\n\u003ctd\u003eValve Replacement Kit\u003c\/td\u003e\n\u003ctd\u003e1-1\/4\" 32mm\u003c\/td\u003e\n\u003ctd\u003e1-3\/4\" 44mm\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-904045abyc\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e904046ABYC\u003c\/td\u003e\n\u003ctd\u003eValve Replacement Kit\u003c\/td\u003e\n\u003ctd\u003e1-1\/2\" 38mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/4\" 57mm\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-904046abyc\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e904048ABYC\u003c\/td\u003e\n\u003ctd\u003eValve Replacement Kit\u003c\/td\u003e\n\u003ctd\u003e2\" 51mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/4\" 57mm\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-904048abyc\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eA 4-part kit: Pro Series valve, 90° hose barb connector, straight hose barb connector and a mushroom head thru-hull with buttress thread, to avoid thread-style mismatches on aftermarket installations.\u003c\/p\u003e\n\u003ch3\u003eEngine flush-out valve, locking handle\u003c\/h3\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eHose barb dia.\u003c\/th\u003e\n\u003cth\u003eMushroom part no\u003c\/th\u003e\n\u003cth\u003eMushroom screened part no\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\"\u003c\/td\u003e\n\u003ctd\u003e931274\u003c\/td\u003e\n\u003ctd\u003e937474\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1-1\/4\"\u003c\/td\u003e\n\u003ctd\u003e931275\u003c\/td\u003e\n\u003ctd\u003e937475\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1-1\/2\"\u003c\/td\u003e\n\u003ctd\u003e931276\u003c\/td\u003e\n\u003ctd\u003e937476\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e931278\u003c\/td\u003e\n\u003ctd\u003e937478\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e930136 – optional handle lock for 1\"(25.4mm) \u0026amp; 1-1\/4\"(31.75mm); 930137 – for 1-1\/2\"(38.1mm) \u0026amp; 2\"(50.8mm). Factory installed only, not a retrofit item; padlock not supplied.\u003c\/li\u003e\n\u003cli\u003eAnti-venturi thru-hull: add a \"V\" to any Pro Series part number.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eY-valves and Flowtech racing valves\u003c\/h3\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart no.\u003c\/th\u003e\n\u003cth\u003eModel no.\u003c\/th\u003e\n\u003cth\u003eBarb size \/ data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e902000\u003c\/td\u003e\n\u003ctd\u003eMF 852\u003c\/td\u003e\n\u003ctd\u003e1-1\/2\"(38.1mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e902001\u003c\/td\u003e\n\u003ctd\u003eMF 853\u003c\/td\u003e\n\u003ctd\u003e1\"(25.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e902006\u003c\/td\u003e\n\u003ctd\u003eY Valve Parts Kit\u003c\/td\u003e\n\u003ctd\u003efits 1\" \u0026amp; 1-1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e902017\u003c\/td\u003e\n\u003ctd\u003eMF 854\u003c\/td\u003e\n\u003ctd\u003e3\/4\"(19.05mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e902018\u003c\/td\u003e\n\u003ctd\u003eMF 855\u003c\/td\u003e\n\u003ctd\u003e1-1\/8\"(28.57mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e905106\u003c\/td\u003e\n\u003ctd\u003eFlowtech Valve Mark I\u003c\/td\u003e\n\u003ctd\u003e1.502 oz; bury depth 1-3\/8\" (35mm), dia. 1-7\/8\" (47.6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e905109\u003c\/td\u003e\n\u003ctd\u003eFlowtech Valve Mark II\u003c\/td\u003e\n\u003ctd\u003e1.702 oz; bury depth 2-1\/16\" (52mm), dia. 2-1\/4\" (57mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e905107\u003c\/td\u003e\n\u003ctd\u003eFlowtech Mark I Repair Kit\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e905112\u003c\/td\u003e\n\u003ctd\u003eFlowtech Mark II Repair Kit\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eY-valves should not be installed below the waterline: Pro Series Y-valve seacocks are made for that. Forespar valve components are not compatible with any other manufacturer's product.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-loops\"\u003e\n\u003ch2 class=\"om-h\"\u003eVented Loops\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eModel #\u003c\/th\u003e\n\u003cth\u003eBarb size\u003c\/th\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903000\u003c\/td\u003e\n\u003ctd\u003eMF 840\u003c\/td\u003e\n\u003ctd\u003e1-1\/2\"(38.1mm)\u003c\/td\u003e\n\u003ctd\u003e5-1\/4\"(133.35mm)\u003c\/td\u003e\n\u003ctd\u003e7-3\/4\"(196.85mm)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903001\u003c\/td\u003e\n\u003ctd\u003eMF 842\u003c\/td\u003e\n\u003ctd\u003e3\/4\"(19.05mm)\u003c\/td\u003e\n\u003ctd\u003e4-1\/2\"(114.3mm)\u003c\/td\u003e\n\u003ctd\u003e3-3\/4\"(95.25mm)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903002\u003c\/td\u003e\n\u003ctd\u003eMF 841\u003c\/td\u003e\n\u003ctd\u003eVent Cap Assembly\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903003\u003c\/td\u003e\n\u003ctd\u003eMF-843\u003c\/td\u003e\n\u003ctd\u003e5\/8\"(15.87mm)\u003c\/td\u003e\n\u003ctd\u003e4-1\/2\"(114.3mm)\u003c\/td\u003e\n\u003ctd\u003e4\"(101.6mm)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-903003\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903004\u003c\/td\u003e\n\u003ctd\u003eMF-846\u003c\/td\u003e\n\u003ctd\u003eVent Barb Assembly\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903007\u003c\/td\u003e\n\u003ctd\u003eMF-844\u003c\/td\u003e\n\u003ctd\u003e1\"(25.4mm)\u003c\/td\u003e\n\u003ctd\u003e7\"(177.8mm)\u003c\/td\u003e\n\u003ctd\u003e9\"(228.6mm)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-903007\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903008\u003c\/td\u003e\n\u003ctd\u003eMF-845\u003c\/td\u003e\n\u003ctd\u003e1\/2\"(12.7mm)\u003c\/td\u003e\n\u003ctd\u003e5-1\/4\"(133.35mm)\u003c\/td\u003e\n\u003ctd\u003e4-1\/4\"(107.95mm)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-903008\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903018\u003c\/td\u003e\n\u003ctd\u003eMF-847\u003c\/td\u003e\n\u003ctd\u003e1-1\/8\"(28.57mm)\u003c\/td\u003e\n\u003ctd\u003e7\"(177.8mm)\u003c\/td\u003e\n\u003ctd\u003e9\"(228.6mm)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-903018\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e903011\u003c\/td\u003e\n\u003ctd\u003eMF-839\u003c\/td\u003e\n\u003ctd\u003e1-1\/4\"(28.57mm) (as printed)\u003c\/td\u003e\n\u003ctd\u003e7\"(177.8mm)\u003c\/td\u003e\n\u003ctd\u003e9\"(228.6mm)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-shop\" href=\"\/products\/for-903011\"\u003eView part →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eThe loop goes between a water pump and any tank, head, engine or other system; when siphoning starts, the duckbill valve lets air in and breaks the siphon.\u003c\/li\u003e\n\u003cli\u003eInspect and clean the rubber duckbill vent regularly. The vent barb option lets you run an external tube so odors are not released in the cabin.\u003c\/li\u003e\n\u003cli\u003eAlso available in white (W suffix).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-install\"\u003e\n\u003ch2 class=\"om-h\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePro Series seacocks install onto Pro Series buttress thread thru-hulls, or can be ordered for NPSM thru-hulls. A backing block on the inside of the hull is recommended; prepare the threads of both thru-hull and seacock with marine sealant.\u003c\/li\u003e\n\u003cli\u003eAll other Marelon threaded connections are straight NPSM: mate with NPSM parts using teflon tape or marine thread sealant. NPT parts can be used with a liberal application of marine sealant, but Forespar does not warranty this usage.\u003c\/li\u003e\n\u003cli\u003eBSP threads are incompatible with NPSM; BSP versions are available by special order.\u003c\/li\u003e\n\u003cli\u003eThru-hull connectors must be installed with proper bedding compound; maximum torque 20 lb\/ft for Series 250, 251 and 253.\u003c\/li\u003e\n\u003cli\u003eIf a thru-hull is installed less than 6\"(152.4mm) above the waterline, a ball-valve or seacock must also be used.\u003c\/li\u003e\n\u003cli\u003eValves are a maintenance item: actuate the handle regularly and lubricate the seals; each Pro Series valve can be disassembled to clean it and replace the O-rings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eNeed a part that isn't listed? \u003ca href=\"\/pages\/contact\"\u003eAsk us to source it\u003c\/a\u003e and quote the part number from the PDF.\u003c\/p\u003e\n\u003ch2 class=\"om-h\" id=\"om-products\"\u003eProducts in this Selection Guide\u003c\/h2\u003e\n\u003c\/div\u003e","products":[{"product_id":"for-770035","title":"Forespar Lanocote Rust \u0026 Corrosion Solution Prop and Bottom - 16.0 oz (453.0 gr)","description":"\u003cp\u003e\u003cb\u003eLanocote Rust \u0026amp; Corrosion Solution Prop and Bottom - 16 oz. \u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eLanoCote works on these five basic principles: displaces water, absorbs corrosion, forms moisture barrier, penetrates and high lubricity. LanoCote is extremely effective in preventing and stopping corrosion on all types of metals under all environmental conditions. Formulated to withstand salt water marine conditions, LanoCote is particularly useful in preventing thread seizure due to all types of corrosion on boats and machinery.\u003c\/p\u003e\u003cp\u003eApplied during assembly, LanoCote will greatly assist in easy dismantling years later. An example would be anchor shackles which are regularly immersed in salt water. LanoCote also combats galvanization where dissimilar metals are fastened together, such as stainless steel fittings on alloy masts etc. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures\u003c\/b\u003e:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePrevents Thread Freeze-up\u003c\/li\u003e\n\u003cli\u003eCombats Galvanic Reaction of Dissimilar Metals\u003c\/li\u003e\n\u003cli\u003eSeals Porous Surfaces\u003c\/li\u003e\n\u003cli\u003eNeutralizes Acids, Alkalies, \u0026amp; Salts\u003c\/li\u003e\n\u003cli\u003ePrevents Corrosion on Electronic Contacts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOur Part # FOR-770035 | Mfr. Part # 770035\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250036530,"sku":"FOR-770035","price":41.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-770035.jpg?v=1747147602"},{"product_id":"for-770170","title":"Forespar Lubricant MareLube TEF45 Max PTFE Heavy Load Caulk Tube - 12.0 oz (340.1 gr)","description":"\u003cp\u003e\u003cb\u003eMareLube TEF45 Max PTFE Heavy Load Lubricant Caulk Tube - 12 oz.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eMarelube is Forespar's new family of three specifically formulated synthetic lubricants designed for various uses around your boat. Each contains PTFE and they work equally well in fresh or salt water. \u003c\/p\u003e\u003cp\u003eMarelube TEF 45 is a highly water-resistant synthetic lubricanat grease containing 45% PTFE. This is the highest percentage PTFE available, which makes TEF 45 perfect for heavy loads and bi-metal anti-corrosion applications like turnbuckles, spar fittings and motor lower units. TEF 45 also works well at protecting against rust corrosion and anti-seize applications. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMax PTFE Heavy Load Formulation\u003c\/li\u003e\n\u003cli\u003eHighly Water Resistant\u003c\/li\u003e\n\u003cli\u003eBi-metal Corrosion Protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOur Part # FOR-770170 | Mfr. Part # 770170\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250069298,"sku":"FOR-770170","price":101.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-770170.jpg?v=1747147602"},{"product_id":"for-770068","title":"Forespar Lubricant MareLube TEF45 Max PTFE Heavy Load - 16.0 oz (453.0 gr)","description":"\u003cp\u003e\u003cb\u003eMareLube TEF45 Max PTFE Heavy Load Lubricant - 16 oz.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eMarelube is Forespar's new family of three specifically formulated synthetic lubricants designed for various uses around your boat. Each contains PTFE and they work equally well in fresh or salt water. \u003c\/p\u003e\u003cp\u003eMarelube TEF 45 is a highly water-resistant synthetic lubricanat grease containing 45% PTFE. This is the highest percentage PTFE available, which makes TEF 45 perfect for heavy loads and bi-metal anti-corrosion applications like turnbuckles, spar fittings and motor lower units. TEF 45 also works well at protecting against rust corrosion and anti-seize applications. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMax PTFE Heavy Load Formulation\u003c\/li\u003e\n\u003cli\u003eHighly Water Resistant\u003c\/li\u003e\n\u003cli\u003eBi-metal Corrosion Protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOur Part # FOR-770068 | Mfr. Part # 770068\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250233138,"sku":"FOR-770068","price":116.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-770068.jpg?v=1747147601"},{"product_id":"for-903007","title":"Forespar 1\" Vented Loop (MF 844 - Anti-Siphon Valve)","description":"\u003cp\u003e\u003cb\u003eMF 844 Vented Loop - 1.00 in.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eInstalling one of our vented loops will ensure that fluids will not siphon from tank to tank. Vented loops are commonly used in the marine toilet system and engine cooling system. The simple valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals as water or other fluid passes through. Molded in Marelon, neither vent nor loop will corrode. The duckbill one way valve is designed to seal properly if particulate is present in fluids. The new MF-846 vent barb assembly option can be used in lieu of the standard MF-841 cap\/duckbill. This option allows venting to the outside of the hull via a 1\/4\" (6.35mm) hose.\u003c\/p\u003e\u003cp\u003eOur Part # FOR-903007 | Mfr. Part # 903007\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250462514,"sku":"FOR-903007","price":39.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-903007.jpg?v=1747147602"},{"product_id":"for-903003","title":"Forespar 5\/8\" Vented Loop (MF 843 - Anti-Siphon Valve)","description":"\u003cp\u003e\u003cb\u003eMF 843 Vented Loop - 5\/8 in.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eInstalling one of our vented loops will ensure that fluids will not siphon from tank to tank. Vented loops are commonly used in the marine toilet system and engine cooling system. The simple valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals as water or other fluid passes through. Molded in Marelon, neither vent nor loop will corrode. The duckbill one way valve is designed to seal properly if particulate is present in fluids. The new MF-846 vent barb assembly option can be used in lieu of the standard MF-841 cap\/duckbill. This option allows venting to the outside of the hull via a 1\/4\" (6.35mm) hose.\u003c\/p\u003e\u003cp\u003eOur Part # FOR-903003 | Mfr. Part # 903003\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250495282,"sku":"FOR-903003","price":36.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-903003.jpg?v=1747147604"},{"product_id":"for-903018","title":"Forespar 1-1\/8\" Vented Loop (MF 847 - Anti-Siphon Valve)","description":"\u003cp\u003eThe Forespar 1-1\/8\" Vented Loop #903018 is perfect for ensuring that fluids don't siphon from tank to tank, making it ideal for marine toilet and engine cooling systems. With a clever valve at the top that lets air in when not in use and seals tight when water flows, it's a handy addition to your boat's gear. Plus, its Marelon construction means it's tough and corrosion-free.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eBenefits\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePrevents siphoning between tanks\u003c\/li\u003e\n\u003cli\u003eIdeal for marine toilet and engine cooling systems\u003c\/li\u003e\n\u003cli\u003eIncorporates an air valve that seals during fluid flow\u003c\/li\u003e\n\u003cli\u003eMolded in durable, corrosion-resistant Marelon\u003c\/li\u003e\n\u003cli\u003eDuckbill valve seals even with particulates in fluids\u003c\/li\u003e\n\u003cli\u003eOptional vent barb assembly for external venting\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis vented loop measures 1-1\/8 inches and is crafted from Marelon, a material known for its resilience and resistance to corrosion. It's a fit for sailing gear where preventing backflow is crucial. Additionally, an optional vent barb assembly can replace the standard cap\/duckbill to allow venting outside the hull via a 1\/4\" hose.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eUsage\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eBest used in marine environments, particularly in systems like marine toilets and engine cooling, where preventing siphoning is essential.\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250528050,"sku":"FOR-903018","price":44.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-903018.jpg?v=1747147603"},{"product_id":"for-904042abyc","title":"Forespar Marelon 1\/2\" Mushroom Through-Hull Full-Flow Seacock","description":"\u003cp\u003e\u003cb\u003eMarelon Full-Flow Seacock \u0026amp; 1\/2\" Mushroom Through-Hull\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eThis integrated 2-part system comes complete with a Marelon valve and properly matched mushroom head thru-hull with super strong \"buttress\" type threading. This new package is designed to eliminate valve and thru-hull thread style mismatches and associated cross-threading for after market installations common when customers select individual parts from bins.\u003c\/p\u003e\u003cp\u003eOur Part # FOR-904042ABYC | Mfr. Part # 904042ABYC\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250560818,"sku":"FOR-904042ABYC","price":92.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-904042ABYC.jpg?v=1747147604"},{"product_id":"for-904044abyc","title":"Forespar Marelon 1\" Mushroom Through-Hull Full-Flow Seacock","description":"\u003cp\u003e\u003cb\u003eMarelon Full-Flow Seacock \u0026amp; 1\" Mushroom Through-Hull\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eThis integrated 2-part system comes complete with a Marelon valve and properly matched mushroom head thru-hull with super strong \"buttress\" type threading. This new package is designed to eliminate valve and thru-hull thread style mismatches and associated cross-threading for after market installations common when customers select individual parts from bins.\u003c\/p\u003e\u003cp\u003eOur Part # FOR-904044ABYC | Mfr. Part # 904044ABYC\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250659122,"sku":"FOR-904044ABYC","price":123.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-904044ABYC.jpg?v=1747147603"},{"product_id":"for-904043abyc","title":"Forespar Marelon 3\/4\" Mushroom Through-Hull Full-Flow Seacock","description":"\u003cp\u003eThe Forespar Marelon 3\/4\" Mushroom Through-Hull Full-Flow Seacock #904043ABYC is designed to provide a seamless and secure connection for your sailing needs. This two-part system is thoughtfully created to prevent cross-threading, ensuring a reliable and straightforward installation process. Its user-friendly design makes it an essential addition to any marine setup.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eBenefits\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIntegrated Marelon valve and mushroom through-hull\u003c\/li\u003e\n\u003cli\u003eSuper strong \"buttress\" type threading\u003c\/li\u003e\n\u003cli\u003ePrevents cross-threading and mismatches\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCrafted from durable Marelon material, this seacock and through-hull combination offers exceptional resilience against corrosion, making it ideal for marine environments. The 3\/4\" size fits standard marine applications, and its full-flow design ensures optimal water passage. This product is particularly suited for those who prioritize reliability and ease of use in their sailing equipment.\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250691890,"sku":"FOR-904043ABYC","price":95.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-904043ABYC.jpg?v=1747147604"},{"product_id":"for-903008","title":"Forespar 1\/2\" Vented Loop (MF 845 - Anti-Siphon Valve)","description":"\u003cp\u003e\u003cb\u003eMF 845 Vented Loop - 1\/2 in.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eInstalling one of our vented loops will ensure that fluids will not siphon from tank to tank. Vented loops are commonly used in the marine toilet system and engine cooling system. The simple valve system incorporated in the top of the loop allows air to enter the line when not in use, yet effectively seals as water or other fluid passes through. Molded in Marelon, neither vent nor loop will corrode. The duckbill one way valve is designed to seal properly if particulate is present in fluids. The new MF-846 vent barb assembly option can be used in lieu of the standard MF-841 cap\/duckbill. This option allows venting to the outside of the hull via a 1\/4\" (6.35mm) hose.\u003c\/p\u003e\u003cp\u003eOur Part # FOR-903008 | Mfr. Part # 903008\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250757426,"sku":"FOR-903008","price":33.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-903008.jpg?v=1747147603"},{"product_id":"for-904048abyc","title":"Forespar Marelon 2\" Mushroom Through-Hull Full-Flow Seacock","description":"\u003cp\u003e\u003cb\u003eMarelon Full-Flow Seacock \u0026amp; 2\" Mushroom Through-Hu\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eThis integrated 2-part system comes complete with a Marelon valve and properly matched mushroom head thru-hull with super strong \"buttress\" type threading. This new package is designed to eliminate valve and thru-hull thread style mismatches and associated cross-threading for after market installations common when customers select individual parts from bins.\u003c\/p\u003e\u003cp\u003eOur Part # FOR-904048ABYC | Forespar Part # 904048ABYC\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250822962,"sku":"FOR-904048ABYC","price":215.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-904048ABYC.jpg?v=1747147603"},{"product_id":"for-903011","title":"Forespar 1-1\/4\" Vented Loop (MF 839 - Anti-Siphon Valve)","description":"\u003cp\u003e\u003cb\u003eMF 839 Vented Loop - 1-1\/4 in.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eInstalling one of our vented loops will ensure that fluids will not siphon from tank to tank. Vented loops are commonly used in the marine toilet system and engine cooling system. 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Part # 903011\u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250921266,"sku":"FOR-903011","price":39.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-903011.jpg?v=1747147602"},{"product_id":"for-904045abyc","title":"Forespar Marelon 1-1\/4\" Mushroom Through-Hull Full-Flow Seacock","description":"\u003cp\u003eThe Forespar Marelon 1-1\/4\" Mushroom Through-Hull Full-Flow Seacock #904045ABYC is a versatile plumbing product designed to streamline installations by providing perfectly matched components. This system ensures a reliable fit, preventing common issues like cross-threading that can occur when mixing different parts. Ideal for marine applications, this seacock is your go-to choice for hassle-free installations.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eBenefits\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIntegrated two-part system for seamless installation.\u003c\/li\u003e\n\u003cli\u003eMade with durable Marelon material for long-lasting performance.\u003c\/li\u003e\n\u003cli\u003eButtress-type threading for extra strength and reliability.\u003c\/li\u003e\n\u003cli\u003eEngineered to eliminate thread mismatches.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis plumbing product features a Marelon valve paired with a mushroom head through-hull, providing a robust and corrosion-resistant solution for marine environments. The 1-1\/4\" size ensures full flow capability, making it suitable for various boating and sailing needs. Its durable construction withstands the harsh marine elements, ensuring safety and efficiency on the water.\u003c\/p\u003e\u003cp\u003eOur Part # FOR-904045ABYC | Mfr. Part # 904045ABYC \u003c\/p\u003e","brand":"Forespar","offers":[{"title":"Default Title","offer_id":50016250986802,"sku":"FOR-904045ABYC","price":147.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/FOR-904045ABYC.jpg?v=1747147603"},{"product_id":"for-904046abyc","title":"Forespar Marelon 1-1\/2\" Mushroom Through-Hull Full-Flow Seacock","description":"\u003cp\u003eThe Forespar Marelon 1-1\/2\" Mushroom Through-Hull Full-Flow Seacock #904046ABYC is a reliable plumbing product designed for easy and secure aftermarket installations. With its thoughtful design, this product minimizes the risk of cross-threading, ensuring a smooth and hassle-free experience. It's crafted for those who value both functionality and quality in their marine equipment.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eBenefits\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIntegrated 2-part system for convenience\u003c\/li\u003e\n\u003cli\u003eSuper strong \"buttress\" type threading\u003c\/li\u003e\n\u003cli\u003ePrevents valve and thru-hull thread mismatches\u003c\/li\u003e\n\u003cli\u003eIdeal for aftermarket installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eConstructed from Marelon, a durable marine-grade composite, this seacock and through-hull system offers excellent resistance to corrosion and wear. The 1-1\/2\" mushroom head design ensures optimal water flow, while the integrated valve system guarantees compatibility and ease of installation. Designed specifically for marine use, this product is both lightweight and robust, making it a smart choice for sailing enthusiasts.\u003c\/p\u003e\u003cp\u003eOur Part # FOR-904046ABYC | Mfr. 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