{"title":"Forespar Flowtech Flush-Mount Valves — Installation Instructions","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\"\u003eINSTALLATION MANUAL\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eOperate, install flush with the hull and maintain Forespar Flowtech Marelon flush-mount intake valves #905106 (Mark 1) and #905109 (Mark 2-Custom).\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eForespar Flowtech Flush-Mount Valves Installation Instructions\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 3 pages · 0.2 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-Flowtech-Flush-Mount-Valve-Instructions.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eInstallation Manual\u003c\/span\u003e\u003csmall\u003ePDF · 3 p.\u003c\/small\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Forespar-Flowtech-Valve-Install-Info.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eInstallation info (F120)\u003c\/span\u003e\u003csmall\u003ePDF · 1 p.\u003c\/small\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Forespar-Flowtech-Performance-Valves-Diagram.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eDimension drawing (D101)\u003c\/span\u003e\u003csmall\u003ePDF · 2 p.\u003c\/small\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003ca class=\"om-btn buy\" href=\"\/collections\/forespar-plumbing-seacocks-valves-regulators\"\u003eView Collection\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-use\"\u003eOperation\u003c\/a\u003e\u003ca href=\"#om-dims\"\u003eDimensions\u003c\/a\u003e\u003ca href=\"#om-install\"\u003eInstallation\u003c\/a\u003e\u003ca href=\"#om-maint\"\u003eMaintenance\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-Flowtech-Flush-Mount-Valve-Instructions-Cover.png\" alt=\"Forespar Flowtech Flush-Mount Valves — Installation Instructions\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-use\"\u003e\n\u003ch2 class=\"om-h\"\u003eUsage\u003c\/h2\u003e\n\u003cp\u003eA plunger moves up or down: up lets water flow into the boat; down and locked leaves a perfectly smooth hull surface. A pair of O-rings seals the plunger when closed and locked.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eTo unlock, flip the valve handle up and over so the red dot faces upwards.\u003c\/li\u003e\n\u003cli\u003ePull the plunger up (open) or push it down towards the hull (closed). Then lock it by flipping the handle over so the green dot faces upwards.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"om-note\"\u003eAlways leave the valve locked, open or closed, so the plunger cannot change position unexpectedly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-dims\"\u003e\n\u003ch2 class=\"om-h\"\u003eDimensions (D101)\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall height (handle to flange)\u003c\/td\u003e\n\u003ctd\u003e9 5\/8\" – 244.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight to top of handle shaft\u003c\/td\u003e\n\u003ctd\u003e7 1\/2\" – 190.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight, closed\u003c\/td\u003e\n\u003ctd\u003e4 5\/8\" – 117.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHose barb\u003c\/td\u003e\n\u003ctd\u003e1 1\/2\" – 38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange diameter\u003c\/td\u003e\n\u003ctd\u003e3 7\/16\" – 87 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall width (flange edge to barb)\u003c\/td\u003e\n\u003ctd\u003e7 1\/16\" – 179 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"height:16px\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eBury depth\u003c\/th\u003e\n\u003cth\u003eBury diameter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlowtech Mark 1\u003c\/td\u003e\n\u003ctd\u003e905106\u003c\/td\u003e\n\u003ctd\u003e1-3\/8\" – 35 mm\u003c\/td\u003e\n\u003ctd\u003e1-7\/8\" – 47.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlowtech Mark 2-Custom\u003c\/td\u003e\n\u003ctd\u003e905109\u003c\/td\u003e\n\u003ctd\u003e2-1\/16\" – 52 mm\u003c\/td\u003e\n\u003ctd\u003e2-1\/4\" – 57 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eThe installation sheets give a 1-7\/8\" (48 mm) hull hole and a minimum 5\/8\" bury (hull thickness) for both #905106 and #905109; the D101 drawing lists a larger bury diameter for the Mark 2 (as printed). Check your valve before drilling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-install\"\u003e\n\u003ch2 class=\"om-h\"\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eForespar recommends installation by a qualified professional or certified marine technician familiar with boat plumbing.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eChoose a location with room for full operation of the valve and for routing hoses.\u003c\/li\u003e\n\u003cli\u003eDrill a 1-7\/8\" (48 mm) hole through the hull in a reasonably flat internal surface. The hull must be at least 5\/8\" thick; if not, build a backing block (waterproofed plywood covered with at least two layers of laminated fiberglass cloth). The bury can be in the backing block.\u003c\/li\u003e\n\u003cli\u003eOn a cored or multilayer hull, thoroughly apply resin inside the hole to isolate the core.\u003c\/li\u003e\n\u003cli\u003eWith the valve closed and locked, clean the bonding surfaces with acetone or another strong non-petroleum cleaner; let the acetone fully evaporate (it can damage the O-rings).\u003c\/li\u003e\n\u003cli\u003ePrepare a thick bedding compound (Cabosil or similar thickener with polyester, vinylester or epoxy resin suitable for your hull), or a marine sealant. Work it into the hole and the outside ribs of the valve.\u003c\/li\u003e\n\u003cli\u003eInsert the valve so a little compound squeezes out from under the flange. Do not press hard enough to flex the flange – it would leave voids when it springs back.\u003c\/li\u003e\n\u003cli\u003eWhen cured, bond the flange to the hull with 17 oz. woven glass: circles with 1-7\/8\" centre holes, each larger than the last, laminated concentrically smallest first, the last one extending at least 3\" beyond the flange. The main sheet calls for at least three layers; the F120 sheet for four or five laminations of 17 oz. E-glass in the hull lay-up resin.\u003c\/li\u003e\n\u003cli\u003eWhen all resins are cured, with the valve down and locked, saw off the bulk of the protruding valve (protect the hull with tape) and grind it flush. F120: disk off a minimum of 1\/2\" to a smooth flush surface, so the piston opens fully and does not partially block the exit port.\u003c\/li\u003e\n\u003cli\u003ePaint the area like the rest of the hull. The bottom of the plunger can be painted in the down position – do not apply so much paint around it that it cannot break loose.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-maint\"\u003e\n\u003ch2 class=\"om-h\"\u003eMaintenance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperate the valves regularly: operation draws lubricant around the shaft seals. Lack of use or drying out makes the piston stiff.\u003c\/li\u003e\n\u003cli\u003eUse ONLY silicone grease or Marelube, on the shaft only.\u003c\/li\u003e\n\u003cli\u003eDo NOT use aerosols, petroleum-based lubricants or WD-40 (they damage the O-rings). Do NOT lubricate the O-rings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"height:16px\"\u003e\u003c\/div\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\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e905107\u003c\/td\u003e\n\u003ctd\u003eReplacement piston kit for MK-1\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\u003e905112\u003c\/td\u003e\n\u003ctd\u003eReplacement piston kit for MK-II\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\u003c\/table\u003e\u003c\/div\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 Manual\u003c\/h2\u003e\n\u003c\/div\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/Forespar-Flowtech-Flush-Mount-Valve-Instructions-Cover.png?v=1793136611","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-forespar-flowtech-valves.oembed","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}