{"title":"Vacuum Switches","description":"","products":[{"product_id":"vacuum-switch-1-5-hg-1-4-fpt-oem-replacement-part","title":"Vacuum Switch 1.5\" Hg 1\/4\" FPT – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"183\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 1404\u003cbr data-start=\"47\" data-end=\"50\"\u003e\u003cstrong data-start=\"50\" data-end=\"63\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Components → Vacuum Switches → Electrical Control Components\u003cbr data-start=\"140\" data-end=\"143\"\u003e\u003cstrong data-start=\"143\" data-end=\"152\"\u003eType:\u003c\/strong\u003e Vacuum Switch 1.5\" Hg 1\/4\" FPT\u003c\/p\u003e\n\u003chr data-start=\"185\" data-end=\"188\"\u003e\n\u003cp data-start=\"247\" data-end=\"655\"\u003eThe \u003cstrong data-start=\"251\" data-end=\"285\"\u003eVacuum Switch 1.5\" Hg 1\/4\" FPT\u003c\/strong\u003e is an OEM pressure-sensing control device designed to monitor inlet vacuum conditions in pressure washer systems and automatically control burner operation. Installed on the pump inlet line, this vacuum switch helps ensure safe burner activation by detecting water flow through the system and completing the burner control circuit only when adequate suction is present.\u003c\/p\u003e\n\u003chr data-start=\"1327\" data-end=\"1330\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1332\" data-end=\"1358\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1360\" data-end=\"1829\"\u003e\n\u003cli data-section-id=\"s7nf96\" data-start=\"1360\" data-end=\"1391\"\u003eOEM replacement vacuum switch\u003c\/li\u003e\n\u003cli data-section-id=\"2n048r\" data-start=\"1392\" data-end=\"1451\"\u003eActivates burner systems based on inlet vacuum conditions\u003c\/li\u003e\n\u003cli data-section-id=\"1org1my\" data-start=\"1452\" data-end=\"1501\"\u003eHelps verify water flow before burner operation\u003c\/li\u003e\n\u003cli data-section-id=\"1pcbzkz\" data-start=\"1502\" data-end=\"1540\"\u003ePressure-responsive diaphragm design\u003c\/li\u003e\n\u003cli data-section-id=\"6ezp62\" data-start=\"1541\" data-end=\"1593\"\u003eAutomatically opens and closes electrical circuits\u003c\/li\u003e\n\u003cli data-section-id=\"14k8v4b\" data-start=\"1594\" data-end=\"1634\"\u003eSupports safe burner control operation\u003c\/li\u003e\n\u003cli data-section-id=\"11bdic8\" data-start=\"1635\" data-end=\"1687\"\u003eDesigned for electric pressure washers up to 3 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"1654bng\" data-start=\"1688\" data-end=\"1748\"\u003eHelps prevent unnecessary burner operation when flow stops\u003c\/li\u003e\n\u003cli data-section-id=\"10burtc\" data-start=\"1749\" data-end=\"1783\"\u003eCompact and durable construction\u003c\/li\u003e\n\u003cli data-section-id=\"1mmluop\" data-start=\"1784\" data-end=\"1829\"\u003eIdeal for hot water pressure washer systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1831\" data-end=\"1834\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1836\" data-end=\"1863\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1865\" data-end=\"1896\"\u003e\u003cstrong data-start=\"1865\" data-end=\"1882\"\u003eProduct Type:\u003c\/strong\u003e Vacuum Switch\u003c\/p\u003e\n\u003cp data-start=\"1898\" data-end=\"1924\"\u003e\u003cstrong data-start=\"1898\" data-end=\"1916\"\u003eVacuum Rating:\u003c\/strong\u003e 1.5\" Hg\u003c\/p\u003e\n\u003cp data-start=\"1926\" data-end=\"1955\"\u003e\u003cstrong data-start=\"1926\" data-end=\"1946\"\u003eConnection Size:\u003c\/strong\u003e 1\/4\" FPT\u003c\/p\u003e\n\u003cp data-start=\"1957\" data-end=\"1998\"\u003e\u003cstrong data-start=\"1957\" data-end=\"1973\"\u003eThread Type:\u003c\/strong\u003e Female Pipe Thread (FPT)\u003c\/p\u003e\n\u003cp data-start=\"2000\" data-end=\"2041\"\u003e\u003cstrong data-start=\"2000\" data-end=\"2029\"\u003eMaximum Flow Application:\u003c\/strong\u003e Up to 3 GPM\u003c\/p\u003e\n\u003cp data-start=\"2043\" data-end=\"2073\"\u003e\u003cstrong data-start=\"2043\" data-end=\"2067\"\u003eMaximum Temperature:\u003c\/strong\u003e 140°F\u003c\/p\u003e\n\u003cp data-start=\"2075\" data-end=\"2095\"\u003e\u003cstrong data-start=\"2075\" data-end=\"2086\"\u003eWeight:\u003c\/strong\u003e 1.2 lbs.\u003c\/p\u003e\n\u003cp data-start=\"2097\" data-end=\"2136\"\u003e\u003cstrong data-start=\"2097\" data-end=\"2117\"\u003eEquivalent Part:\u003c\/strong\u003e 0001 Vacuum Switch\u003c\/p\u003e\n\u003cp data-start=\"2138\" data-end=\"2176\"\u003e\u003cstrong data-start=\"2138\" data-end=\"2154\"\u003eApplication:\u003c\/strong\u003e Burner \u0026amp; Flow Control\u003c\/p\u003e\n\u003cp data-start=\"2178\" data-end=\"2202\"\u003e\u003cstrong data-start=\"2178\" data-end=\"2198\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2204\" data-end=\"2207\"\u003e\n\u003ch2 data-section-id=\"164os46\" data-start=\"2209\" data-end=\"2232\"\u003eTypical Applications\u003c\/h2\u003e\n\u003cul data-start=\"2234\" data-end=\"2489\"\u003e\n\u003cli data-section-id=\"fesgef\" data-start=\"2234\" data-end=\"2261\"\u003eElectric pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"g7mqf6\" data-start=\"2262\" data-end=\"2290\"\u003eHot water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"k7ien9\" data-start=\"2291\" data-end=\"2315\"\u003eBurner control systems\u003c\/li\u003e\n\u003cli data-section-id=\"s1usdo\" data-start=\"2316\" data-end=\"2348\"\u003eFuel solenoid control circuits\u003c\/li\u003e\n\u003cli data-section-id=\"wjtvuo\" data-start=\"2349\" data-end=\"2382\"\u003eWater flow verification systems\u003c\/li\u003e\n\u003cli data-section-id=\"n48o3f\" data-start=\"2383\" data-end=\"2414\"\u003eCommercial cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"e9p5qp\" data-start=\"2415\" data-end=\"2452\"\u003eIndustrial pressure washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"7aqsxb\" data-start=\"2453\" data-end=\"2489\"\u003ePump inlet monitoring applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2491\" data-end=\"2494\"\u003e\n\u003ch2 data-section-id=\"7zbpd1\" data-start=\"2496\" data-end=\"2521\"\u003ePerformance Advantages\u003c\/h2\u003e\n\u003cul data-start=\"2523\" data-end=\"2997\"\u003e\n\u003cli data-section-id=\"7z3wen\" data-start=\"2523\" data-end=\"2586\"\u003eHelps ensure burner operation only when water flow is present\u003c\/li\u003e\n\u003cli data-section-id=\"1jr9h19\" data-start=\"2587\" data-end=\"2646\"\u003eAutomatically interrupts burner operation when flow stops\u003c\/li\u003e\n\u003cli data-section-id=\"1rfd29w\" data-start=\"2647\" data-end=\"2686\"\u003eImproves system safety and efficiency\u003c\/li\u003e\n\u003cli data-section-id=\"1p0g479\" data-start=\"2687\" data-end=\"2736\"\u003eReliable diaphragm-operated switching mechanism\u003c\/li\u003e\n\u003cli data-section-id=\"8yzomq\" data-start=\"2737\" data-end=\"2790\"\u003eSupports proper hot water pressure washer operation\u003c\/li\u003e\n\u003cli data-section-id=\"1n77rkv\" data-start=\"2791\" data-end=\"2832\"\u003eHelps reduce unnecessary burner cycling\u003c\/li\u003e\n\u003cli data-section-id=\"1lkwd3x\" data-start=\"2833\" data-end=\"2883\"\u003eDurable construction for commercial environments\u003c\/li\u003e\n\u003cli data-section-id=\"8p1st6\" data-start=\"2884\" data-end=\"2939\"\u003eEasy integration into existing burner control systems\u003c\/li\u003e\n\u003cli data-section-id=\"tgl7rn\" data-start=\"2940\" data-end=\"2997\"\u003eEssential component for many hot water pressure washers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2999\" data-end=\"3002\"\u003e\n\u003ch2 data-section-id=\"3njkry\" data-start=\"3004\" data-end=\"3031\"\u003eImportant Operating Note\u003c\/h2\u003e\n\u003cp data-start=\"3033\" data-end=\"3359\"\u003eA potential issue can occur if the \u003cstrong data-start=\"3068\" data-end=\"3142\"\u003einlet filter, supply line, or float tank becomes restricted or clogged\u003c\/strong\u003e. In this situation, the pump may continue running while creating excessive vacuum on the inlet side. This vacuum condition can keep the switch closed and allow burner operation even though water supply is inadequate.\u003c\/p\u003e\n\u003cp data-start=\"3361\" data-end=\"3382\"\u003eFor proper operation:\u003c\/p\u003e\n\u003cul data-start=\"3384\" data-end=\"3557\"\u003e\n\u003cli data-section-id=\"mu8ms6\" data-start=\"3384\" data-end=\"3418\"\u003eInspect inlet filters regularly.\u003c\/li\u003e\n\u003cli data-section-id=\"1hbkycg\" data-start=\"3419\" data-end=\"3461\"\u003eKeep float tanks clean and unobstructed.\u003c\/li\u003e\n\u003cli data-section-id=\"1m06rbl\" data-start=\"3462\" data-end=\"3506\"\u003eVerify adequate water supply at all times.\u003c\/li\u003e\n\u003cli data-section-id=\"oawhyp\" data-start=\"3507\" data-end=\"3557\"\u003eTroubleshoot any inlet restrictions immediately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3559\" data-end=\"3562\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"3564\" data-end=\"3594\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"3596\" data-end=\"3955\"\u003e\n\u003cli data-section-id=\"fht0pu\" data-start=\"3596\" data-end=\"3663\"\u003eInspect vacuum switch operation during routine service intervals.\u003c\/li\u003e\n\u003cli data-section-id=\"1dmd1a6\" data-start=\"3664\" data-end=\"3719\"\u003eCheck electrical connections for corrosion or damage.\u003c\/li\u003e\n\u003cli data-section-id=\"mab7ja\" data-start=\"3720\" data-end=\"3772\"\u003eInspect inlet plumbing for restrictions or debris.\u003c\/li\u003e\n\u003cli data-section-id=\"olipct\" data-start=\"3773\" data-end=\"3820\"\u003eVerify burner shutdown when water flow stops.\u003c\/li\u003e\n\u003cli data-section-id=\"rex0ca\" data-start=\"3821\" data-end=\"3878\"\u003eReplace damaged or malfunctioning switches immediately.\u003c\/li\u003e\n\u003cli data-section-id=\"yzarbv\" data-start=\"3879\" data-end=\"3955\"\u003eFollow equipment manufacturer installation and troubleshooting procedures.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mecline","offers":[{"title":"Default Title","offer_id":53339190100331,"sku":null,"price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/1404VacuumSwitch.jpg?v=1780499188"},{"product_id":"vacuum-switch-2-5-hg-1-4-fpt-oem-replacement-part","title":"Vacuum Switch 2.5\" Hg 1\/4\" FPT – OEM Replacement Part","description":"\u003cdiv class=\"\" data-turn-id-container=\"d78b229e-5e47-477a-a3dd-7d98658b8f3b\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--header-height)\" dir=\"auto\" data-turn-id=\"d78b229e-5e47-477a-a3dd-7d98658b8f3b\" data-turn-id-container=\"d78b229e-5e47-477a-a3dd-7d98658b8f3b\" data-testid=\"conversation-turn-153\" data-scroll-anchor=\"false\" data-turn=\"user\"\u003e\u003c\/section\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-7\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-7\" data-turn-id-container=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-7\" data-testid=\"conversation-turn-154\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"324bdb1a-5f78-4327-afa3-256217e65037\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"195\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 1405\u003cbr data-start=\"47\" data-end=\"50\"\u003e\u003cstrong data-start=\"50\" data-end=\"63\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Components → Vacuum Switches → Electrical Control Components\u003cbr data-start=\"140\" data-end=\"143\"\u003e\u003cstrong data-start=\"143\" data-end=\"152\"\u003eType:\u003c\/strong\u003e Italtecnica Vacuum Switch 2.5\" Hg 1\/4\" FPT\u003c\/p\u003e\n\u003chr data-start=\"197\" data-end=\"200\"\u003e\n\u003cp data-start=\"259\" data-end=\"680\"\u003eThe \u003cstrong data-start=\"263\" data-end=\"297\"\u003eVacuum Switch 2.5\" Hg 1\/4\" FPT\u003c\/strong\u003e is a high-quality OEM vacuum-operated electrical switch designed to monitor inlet vacuum conditions and control burner or electrical system operation in pressure washer and fluid handling applications.\u003c\/p\u003e\n\u003chr data-start=\"1442\" data-end=\"1445\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1447\" data-end=\"1473\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1475\" data-end=\"1885\"\u003e\n\u003cli data-section-id=\"9lwyd6\" data-start=\"1475\" data-end=\"1517\"\u003eGenuine Italtecnica OEM replacement part\u003c\/li\u003e\n\u003cli data-section-id=\"8djwkb\" data-start=\"1518\" data-end=\"1561\"\u003eVacuum-operated electrical control switch\u003c\/li\u003e\n\u003cli data-section-id=\"ctd7re\" data-start=\"1562\" data-end=\"1591\"\u003eActivates at 2.5\" Hg vacuum\u003c\/li\u003e\n\u003cli data-section-id=\"1q9czu3\" data-start=\"1592\" data-end=\"1642\"\u003eHelps verify water flow before burner activation\u003c\/li\u003e\n\u003cli data-section-id=\"4yj46g\" data-start=\"1643\" data-end=\"1697\"\u003eSuitable for burner and control circuit applications\u003c\/li\u003e\n\u003cli data-section-id=\"a20n8n\" data-start=\"1698\" data-end=\"1721\"\u003e16A electrical rating\u003c\/li\u003e\n\u003cli data-section-id=\"ttrhwc\" data-start=\"1722\" data-end=\"1752\"\u003eCompatible with 220V systems\u003c\/li\u003e\n\u003cli data-section-id=\"1yhx5is\" data-start=\"1753\" data-end=\"1809\"\u003eDurable construction for commercial and industrial use\u003c\/li\u003e\n\u003cli data-section-id=\"1menv2w\" data-start=\"1810\" data-end=\"1840\"\u003eReliable automatic operation\u003c\/li\u003e\n\u003cli data-section-id=\"1nviutg\" data-start=\"1841\" data-end=\"1885\"\u003eEasy installation with 1\/4\" FPT connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1887\" data-end=\"1890\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1892\" data-end=\"1919\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1921\" data-end=\"1950\"\u003e\u003cstrong data-start=\"1921\" data-end=\"1938\"\u003eManufacturer:\u003c\/strong\u003e Italtecnica\u003c\/p\u003e\n\u003cp data-start=\"1952\" data-end=\"1983\"\u003e\u003cstrong data-start=\"1952\" data-end=\"1969\"\u003eProduct Type:\u003c\/strong\u003e Vacuum Switch\u003c\/p\u003e\n\u003cp data-start=\"1985\" data-end=\"2011\"\u003e\u003cstrong data-start=\"1985\" data-end=\"2003\"\u003eVacuum Rating:\u003c\/strong\u003e 2.5\" Hg\u003c\/p\u003e\n\u003cp data-start=\"2013\" data-end=\"2042\"\u003e\u003cstrong data-start=\"2013\" data-end=\"2033\"\u003eConnection Size:\u003c\/strong\u003e 1\/4\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2044\" data-end=\"2085\"\u003e\u003cstrong data-start=\"2044\" data-end=\"2060\"\u003eThread Type:\u003c\/strong\u003e Female Pipe Thread (FPT)\u003c\/p\u003e\n\u003cp data-start=\"2087\" data-end=\"2113\"\u003e\u003cstrong data-start=\"2087\" data-end=\"2109\"\u003eElectrical Rating:\u003c\/strong\u003e 16A\u003c\/p\u003e\n\u003cp data-start=\"2115\" data-end=\"2139\"\u003e\u003cstrong data-start=\"2115\" data-end=\"2134\"\u003eVoltage Rating:\u003c\/strong\u003e 220V\u003c\/p\u003e\n\u003cp data-start=\"2141\" data-end=\"2171\"\u003e\u003cstrong data-start=\"2141\" data-end=\"2165\"\u003eMaximum Temperature:\u003c\/strong\u003e 140°F\u003c\/p\u003e\n\u003cp data-start=\"2173\" data-end=\"2219\"\u003e\u003cstrong data-start=\"2173\" data-end=\"2189\"\u003eApplication:\u003c\/strong\u003e Burner \u0026amp; Flow Control Systems\u003c\/p\u003e\n\u003cp data-start=\"2221\" data-end=\"2245\"\u003e\u003cstrong data-start=\"2221\" data-end=\"2241\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2247\" data-end=\"2250\"\u003e\n\u003ch2 data-section-id=\"164os46\" data-start=\"2252\" data-end=\"2275\"\u003eTypical Applications\u003c\/h2\u003e\n\u003cul data-start=\"2277\" data-end=\"2539\"\u003e\n\u003cli data-section-id=\"g7mqf6\" data-start=\"2277\" data-end=\"2305\"\u003eHot water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"k7ien9\" data-start=\"2306\" data-end=\"2330\"\u003eBurner control systems\u003c\/li\u003e\n\u003cli data-section-id=\"s1usdo\" data-start=\"2331\" data-end=\"2363\"\u003eFuel solenoid control circuits\u003c\/li\u003e\n\u003cli data-section-id=\"wjtvuo\" data-start=\"2364\" data-end=\"2397\"\u003eWater flow verification systems\u003c\/li\u003e\n\u003cli data-section-id=\"1wpc0sg\" data-start=\"2398\" data-end=\"2429\"\u003eIndustrial cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1fqu7u2\" data-start=\"2430\" data-end=\"2467\"\u003eCommercial pressure washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"kb4akw\" data-start=\"2468\" data-end=\"2499\"\u003ePump inlet monitoring systems\u003c\/li\u003e\n\u003cli data-section-id=\"1tahau7\" data-start=\"2500\" data-end=\"2539\"\u003eFluid handling and transfer equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2541\" data-end=\"2544\"\u003e\n\u003ch2 data-section-id=\"7zbpd1\" data-start=\"2546\" data-end=\"2571\"\u003ePerformance Advantages\u003c\/h2\u003e\n\u003cul data-start=\"2573\" data-end=\"3050\"\u003e\n\u003cli data-section-id=\"1rk95xg\" data-start=\"2573\" data-end=\"2650\"\u003eAutomatically controls electrical circuits based on inlet vacuum conditions\u003c\/li\u003e\n\u003cli data-section-id=\"9grthp\" data-start=\"2651\" data-end=\"2707\"\u003eHelps ensure proper water flow before burner operation\u003c\/li\u003e\n\u003cli data-section-id=\"fmorev\" data-start=\"2708\" data-end=\"2754\"\u003eSupports safe and efficient system operation\u003c\/li\u003e\n\u003cli data-section-id=\"1p0g479\" data-start=\"2755\" data-end=\"2804\"\u003eReliable diaphragm-operated switching mechanism\u003c\/li\u003e\n\u003cli data-section-id=\"fp3vfj\" data-start=\"2805\" data-end=\"2848\"\u003eHelps reduce unnecessary burner operation\u003c\/li\u003e\n\u003cli data-section-id=\"18sppfq\" data-start=\"2849\" data-end=\"2898\"\u003eDurable construction for demanding environments\u003c\/li\u003e\n\u003cli data-section-id=\"6setli\" data-start=\"2899\" data-end=\"2952\"\u003eCompatible with commercial and industrial equipment\u003c\/li\u003e\n\u003cli data-section-id=\"12xf3jg\" data-start=\"2953\" data-end=\"3001\"\u003eImproves overall system reliability and safety\u003c\/li\u003e\n\u003cli data-section-id=\"zg2bdy\" data-start=\"3002\" data-end=\"3050\"\u003eEasy integration into existing control systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3052\" data-end=\"3055\"\u003e\n\u003ch2 data-section-id=\"1pazttv\" data-start=\"3057\" data-end=\"3088\"\u003eInstallation Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"3090\" data-end=\"3454\"\u003e\n\u003cli data-section-id=\"pqfoup\" data-start=\"3090\" data-end=\"3168\"\u003eInstall on the inlet side of the pump according to equipment specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"hyk790\" data-start=\"3169\" data-end=\"3223\"\u003eVerify electrical compatibility before installation.\u003c\/li\u003e\n\u003cli data-section-id=\"bifzhx\" data-start=\"3224\" data-end=\"3277\"\u003eEnsure inlet plumbing remains free of restrictions.\u003c\/li\u003e\n\u003cli data-section-id=\"r4o5pl\" data-start=\"3278\" data-end=\"3351\"\u003eInspect filters and float tanks regularly to maintain proper operation.\u003c\/li\u003e\n\u003cli data-section-id=\"17exqt8\" data-start=\"3352\" data-end=\"3409\"\u003eFollow manufacturer wiring and installation guidelines.\u003c\/li\u003e\n\u003cli data-section-id=\"1wh60a6\" data-start=\"3410\" data-end=\"3454\"\u003eTest switch activation after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3456\" data-end=\"3459\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"3461\" data-end=\"3491\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"3493\" data-end=\"3812\"\u003e\n\u003cli data-section-id=\"1vpj8us\" data-start=\"3493\" data-end=\"3536\"\u003eInspect electrical connections regularly.\u003c\/li\u003e\n\u003cli data-section-id=\"2cez8a\" data-start=\"3537\" data-end=\"3600\"\u003eVerify switch operation during routine maintenance intervals.\u003c\/li\u003e\n\u003cli data-section-id=\"461xko\" data-start=\"3601\" data-end=\"3653\"\u003eCheck inlet plumbing and filters for restrictions.\u003c\/li\u003e\n\u003cli data-section-id=\"1hgr6d7\" data-start=\"3654\" data-end=\"3708\"\u003eInspect the switch for physical damage or corrosion.\u003c\/li\u003e\n\u003cli data-section-id=\"mxzrjc\" data-start=\"3709\" data-end=\"3755\"\u003eReplace malfunctioning switches immediately.\u003c\/li\u003e\n\u003cli data-section-id=\"nlod65\" data-start=\"3756\" data-end=\"3812\"\u003eFollow equipment manufacturer service recommendations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Mecline","offers":[{"title":"Default Title","offer_id":53339191476587,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/1405VacuumSwitch.webp?v=1780499463"},{"product_id":"vacuum-switch-4-5-hg-1-4-fpt-oem-replacement-part","title":"Vacuum Switch 4.5\" Hg 1\/4\" FPT – OEM Replacement Part","description":"\u003cdiv class=\"\" data-turn-id-container=\"c4adf48f-2fcf-45a4-aa46-0c7448fc1895\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--header-height)\" dir=\"auto\" data-turn-id=\"c4adf48f-2fcf-45a4-aa46-0c7448fc1895\" data-turn-id-container=\"c4adf48f-2fcf-45a4-aa46-0c7448fc1895\" data-testid=\"conversation-turn-155\" data-scroll-anchor=\"false\" data-turn=\"user\"\u003e\u003c\/section\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-9\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-9\" data-turn-id-container=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-9\" data-testid=\"conversation-turn-156\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"b84ecbaf-a265-4d1d-bc44-2e6d4704ff2f\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"183\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 3777\u003cbr data-start=\"47\" data-end=\"50\"\u003e\u003cstrong data-start=\"50\" data-end=\"63\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Components → Vacuum Switches → Electrical Control Components\u003cbr data-start=\"140\" data-end=\"143\"\u003e\u003cstrong data-start=\"143\" data-end=\"152\"\u003eType:\u003c\/strong\u003e Vacuum Switch 4.5\" Hg 1\/4\" FPT\u003c\/p\u003e\n\u003chr data-start=\"185\" data-end=\"188\"\u003e\n\u003cp data-start=\"247\" data-end=\"656\"\u003eThe \u003cstrong data-start=\"251\" data-end=\"285\"\u003eVacuum Switch 4.5\" Hg 1\/4\" FPT\u003c\/strong\u003e is an OEM vacuum-operated electrical control device designed to monitor inlet vacuum conditions and control burner operation in hot water pressure washer systems. Installed on the pump inlet line, this switch helps verify water flow by responding to vacuum created during pump operation, ensuring that burner systems operate only when proper flow conditions are present.\u003c\/p\u003e\n\u003chr data-start=\"1337\" data-end=\"1340\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1342\" data-end=\"1368\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1370\" data-end=\"1868\"\u003e\n\u003cli data-section-id=\"s7nf96\" data-start=\"1370\" data-end=\"1401\"\u003eOEM replacement vacuum switch\u003c\/li\u003e\n\u003cli data-section-id=\"2n048r\" data-start=\"1402\" data-end=\"1461\"\u003eActivates burner systems based on inlet vacuum conditions\u003c\/li\u003e\n\u003cli data-section-id=\"1org1my\" data-start=\"1462\" data-end=\"1511\"\u003eHelps verify water flow before burner operation\u003c\/li\u003e\n\u003cli data-section-id=\"1pcbzkz\" data-start=\"1512\" data-end=\"1550\"\u003ePressure-responsive diaphragm design\u003c\/li\u003e\n\u003cli data-section-id=\"6ezp62\" data-start=\"1551\" data-end=\"1603\"\u003eAutomatically opens and closes electrical circuits\u003c\/li\u003e\n\u003cli data-section-id=\"14k8v4b\" data-start=\"1604\" data-end=\"1644\"\u003eSupports safe burner control operation\u003c\/li\u003e\n\u003cli data-section-id=\"dsjvl\" data-start=\"1645\" data-end=\"1686\"\u003eIdeal for pressure washers over 4.5 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"eehyc7\" data-start=\"1687\" data-end=\"1756\"\u003eSuitable for gas engine and larger electric pressure washer systems\u003c\/li\u003e\n\u003cli data-section-id=\"13mcyn2\" data-start=\"1757\" data-end=\"1822\"\u003eDurable construction for commercial and industrial applications\u003c\/li\u003e\n\u003cli data-section-id=\"rhs6aa\" data-start=\"1823\" data-end=\"1868\"\u003eHelps improve system safety and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1870\" data-end=\"1873\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1875\" data-end=\"1902\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1904\" data-end=\"1935\"\u003e\u003cstrong data-start=\"1904\" data-end=\"1921\"\u003eProduct Type:\u003c\/strong\u003e Vacuum Switch\u003c\/p\u003e\n\u003cp data-start=\"1937\" data-end=\"1963\"\u003e\u003cstrong data-start=\"1937\" data-end=\"1955\"\u003eVacuum Rating:\u003c\/strong\u003e 4.5\" Hg\u003c\/p\u003e\n\u003cp data-start=\"1965\" data-end=\"1994\"\u003e\u003cstrong data-start=\"1965\" data-end=\"1985\"\u003eConnection Size:\u003c\/strong\u003e 1\/4\" FPT\u003c\/p\u003e\n\u003cp data-start=\"1996\" data-end=\"2037\"\u003e\u003cstrong data-start=\"1996\" data-end=\"2012\"\u003eThread Type:\u003c\/strong\u003e Female Pipe Thread (FPT)\u003c\/p\u003e\n\u003cp data-start=\"2039\" data-end=\"2125\"\u003e\u003cstrong data-start=\"2039\" data-end=\"2067\"\u003eRecommended Application:\u003c\/strong\u003e Gas Engine Pressure Washers \u0026amp; Electric Units Over 4.5 GPM\u003c\/p\u003e\n\u003cp data-start=\"2127\" data-end=\"2157\"\u003e\u003cstrong data-start=\"2127\" data-end=\"2151\"\u003eMaximum Temperature:\u003c\/strong\u003e 140°F\u003c\/p\u003e\n\u003cp data-start=\"2159\" data-end=\"2198\"\u003e\u003cstrong data-start=\"2159\" data-end=\"2179\"\u003eEquivalent Part:\u003c\/strong\u003e 0017 Vacuum Switch\u003c\/p\u003e\n\u003cp data-start=\"2200\" data-end=\"2220\"\u003e\u003cstrong data-start=\"2200\" data-end=\"2211\"\u003eWeight:\u003c\/strong\u003e 1.2 lbs.\u003c\/p\u003e\n\u003cp data-start=\"2222\" data-end=\"2260\"\u003e\u003cstrong data-start=\"2222\" data-end=\"2238\"\u003eApplication:\u003c\/strong\u003e Burner \u0026amp; Flow Control\u003c\/p\u003e\n\u003cp data-start=\"2262\" data-end=\"2286\"\u003e\u003cstrong data-start=\"2262\" data-end=\"2282\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2288\" data-end=\"2291\"\u003e\n\u003ch2 data-section-id=\"164os46\" data-start=\"2293\" data-end=\"2316\"\u003eTypical Applications\u003c\/h2\u003e\n\u003cul data-start=\"2318\" data-end=\"2583\"\u003e\n\u003cli data-section-id=\"g7mqf6\" data-start=\"2318\" data-end=\"2346\"\u003eHot water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"10ry8wq\" data-start=\"2347\" data-end=\"2383\"\u003eGas engine pressure washer systems\u003c\/li\u003e\n\u003cli data-section-id=\"1eso8gm\" data-start=\"2384\" data-end=\"2421\"\u003eHigh-flow electric pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"k7ien9\" data-start=\"2422\" data-end=\"2446\"\u003eBurner control systems\u003c\/li\u003e\n\u003cli data-section-id=\"s1usdo\" data-start=\"2447\" data-end=\"2479\"\u003eFuel solenoid control circuits\u003c\/li\u003e\n\u003cli data-section-id=\"n48o3f\" data-start=\"2480\" data-end=\"2511\"\u003eCommercial cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"e9p5qp\" data-start=\"2512\" data-end=\"2549\"\u003eIndustrial pressure washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"wjtvuo\" data-start=\"2550\" data-end=\"2583\"\u003eWater flow verification systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2585\" data-end=\"2588\"\u003e\n\u003ch2 data-section-id=\"7zbpd1\" data-start=\"2590\" data-end=\"2615\"\u003ePerformance Advantages\u003c\/h2\u003e\n\u003cul data-start=\"2617\" data-end=\"3112\"\u003e\n\u003cli data-section-id=\"1gifvis\" data-start=\"2617\" data-end=\"2683\"\u003eHelps ensure burner operation only when proper water flow exists\u003c\/li\u003e\n\u003cli data-section-id=\"1jr9h19\" data-start=\"2684\" data-end=\"2743\"\u003eAutomatically interrupts burner operation when flow stops\u003c\/li\u003e\n\u003cli data-section-id=\"3r7d0z\" data-start=\"2744\" data-end=\"2799\"\u003eSupports safe operation of hot water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1p0g479\" data-start=\"2800\" data-end=\"2849\"\u003eReliable diaphragm-operated switching mechanism\u003c\/li\u003e\n\u003cli data-section-id=\"131718r\" data-start=\"2850\" data-end=\"2910\"\u003eReduces the risk of burner operation without adequate flow\u003c\/li\u003e\n\u003cli data-section-id=\"18f0j44\" data-start=\"2911\" data-end=\"2956\"\u003eSuitable for larger pressure washer systems\u003c\/li\u003e\n\u003cli data-section-id=\"18sppfq\" data-start=\"2957\" data-end=\"3006\"\u003eDurable construction for demanding environments\u003c\/li\u003e\n\u003cli data-section-id=\"12xf3jg\" data-start=\"3007\" data-end=\"3055\"\u003eImproves overall system reliability and safety\u003c\/li\u003e\n\u003cli data-section-id=\"74coh8\" data-start=\"3056\" data-end=\"3112\"\u003eEasy integration into existing burner control circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3114\" data-end=\"3117\"\u003e\n\u003ch2 data-section-id=\"3njkry\" data-start=\"3119\" data-end=\"3146\"\u003eImportant Operating Note\u003c\/h2\u003e\n\u003cp data-start=\"3148\" data-end=\"3484\"\u003eA potential issue can occur if the \u003cstrong data-start=\"3183\" data-end=\"3263\"\u003einlet filter, water supply line, or float tank becomes clogged or restricted\u003c\/strong\u003e. In this situation, the pump may continue operating while creating excessive vacuum on the inlet side. This vacuum condition can keep the switch closed and allow burner operation even though water supply is insufficient.\u003c\/p\u003e\n\u003cp data-start=\"3486\" data-end=\"3507\"\u003eFor proper operation:\u003c\/p\u003e\n\u003cul data-start=\"3509\" data-end=\"3736\"\u003e\n\u003cli data-section-id=\"mu8ms6\" data-start=\"3509\" data-end=\"3543\"\u003eInspect inlet filters regularly.\u003c\/li\u003e\n\u003cli data-section-id=\"1hbkycg\" data-start=\"3544\" data-end=\"3586\"\u003eKeep float tanks clean and unobstructed.\u003c\/li\u003e\n\u003cli data-section-id=\"1m06rbl\" data-start=\"3587\" data-end=\"3631\"\u003eVerify adequate water supply at all times.\u003c\/li\u003e\n\u003cli data-section-id=\"1bha2pj\" data-start=\"3632\" data-end=\"3677\"\u003eCorrect any inlet restrictions immediately.\u003c\/li\u003e\n\u003cli data-section-id=\"mj204u\" data-start=\"3678\" data-end=\"3736\"\u003eTest vacuum switch operation during routine maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3738\" data-end=\"3741\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"3743\" data-end=\"3773\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"3775\" data-end=\"4145\"\u003e\n\u003cli data-section-id=\"1vpj8us\" data-start=\"3775\" data-end=\"3818\"\u003eInspect electrical connections regularly.\u003c\/li\u003e\n\u003cli data-section-id=\"qv53mz\" data-start=\"3819\" data-end=\"3901\"\u003eVerify switch activation and burner shutdown functions during service intervals.\u003c\/li\u003e\n\u003cli data-section-id=\"xih8x7\" data-start=\"3902\" data-end=\"3968\"\u003eCheck inlet plumbing, filters, and float tanks for restrictions.\u003c\/li\u003e\n\u003cli data-section-id=\"1omdhww\" data-start=\"3969\" data-end=\"4031\"\u003eInspect the diaphragm and switch housing for wear or damage.\u003c\/li\u003e\n\u003cli data-section-id=\"mxzrjc\" data-start=\"4032\" data-end=\"4078\"\u003eReplace malfunctioning switches immediately.\u003c\/li\u003e\n\u003cli data-section-id=\"13ghpm9\" data-start=\"4079\" data-end=\"4145\"\u003eFollow manufacturer installation and troubleshooting procedures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Mecline","offers":[{"title":"Default Title","offer_id":53339193344363,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/GeneralSprayers_Logo_250x250_1_4717f2ee-8f00-42eb-a83a-50a336496221.png?v=1780499838"}],"url":"https:\/\/generalsprayers.com\/collections\/vacuum-switches.oembed","provider":"GeneralSprayers","version":"1.0","type":"link"}