{"product_id":"comet-pmr-zwd4040g-vrt3-310ez-pump-made-ready-with-bypass-thermal-relief-4-0-gpm-4000-psi","title":"Comet PMR ZWD4040G-VRT3-310EZ Pump Made Ready with Bypass \u0026 Thermal Relief – 4.0 GPM 4000 PSI","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv data-is-intersecting=\"true\" data-turn-id-container=\"request-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-14\" class=\"\"\u003e\n\u003csection data-turn=\"assistant\" data-testid=\"conversation-turn-24\" data-turn-id-container=\"request-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-14\" data-turn-id=\"request-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-14\" dir=\"auto\" 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)))]\"\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\" data-conversation-screenshot-content=\"\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-turn-start-message=\"true\" 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-message-model-slug=\"gpt-5-5\" dir=\"auto\" data-message-id=\"2e98ff35-5439-411c-95ae-a0a08ef10309\" data-message-author-role=\"assistant\" 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 class=\"PDq2pG_selectionAnchorContainer\" data-end=\"197\" data-start=\"0\"\u003e\u003cstrong data-end=\"16\" data-start=\"0\"\u003ePart Number:\u003c\/strong\u003e ZWD4040G-VRT3-310EZ\u003cbr data-end=\"24\" data-start=\"21\"\u003e\u003cstrong data-end=\"37\" data-start=\"24\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Pumps → Triplex Pumps → Ready-to-Install Pump Assemblies\u003cbr data-end=\"113\" data-start=\"110\"\u003e\u003cstrong data-end=\"122\" data-start=\"113\"\u003eType:\u003c\/strong\u003e Comet PMR ZWD4040G-VRT3-310EZ Pump Made Ready with Bypass \u0026amp; Thermal Relief\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-end=\"202\" data-start=\"199\"\u003e\n\u003cp data-end=\"835\" data-start=\"301\"\u003eThe \u003cstrong data-end=\"396\" data-start=\"305\"\u003eComet PMR ZWD4040G-VRT3-310EZ Pump Made Ready with Bypass \u0026amp; Thermal Relief (Part #6553)\u003c\/strong\u003e is a factory-configured, ready-to-install triplex pressure washer pump assembly engineered for demanding commercial and industrial cleaning applications. Built around the \u003cstrong data-end=\"586\" data-start=\"568\"\u003eComet ZWD4040G\u003c\/strong\u003e triplex pump, this complete assembly comes pre-equipped with a \u003cstrong data-end=\"679\" data-start=\"650\"\u003eVRT3-310EZ unloader valve\u003c\/strong\u003e, \u003cstrong data-end=\"702\" data-start=\"681\"\u003eintegrated bypass\u003c\/strong\u003e, and \u003cstrong data-end=\"732\" data-start=\"708\"\u003ethermal relief valve\u003c\/strong\u003e, reducing installation time while providing reliable pressure regulation and enhanced pump protection.\u003c\/p\u003e\n\u003chr data-end=\"1524\" data-start=\"1521\"\u003e\n\u003ch1 data-end=\"1551\" data-start=\"1526\" data-section-id=\"1oef6j8\"\u003eKey Features \u0026amp; Benefits\u003c\/h1\u003e\n\u003cul data-end=\"2124\" data-start=\"1553\"\u003e\n\u003cli data-end=\"1599\" data-start=\"1553\" data-section-id=\"rjzcfo\"\u003eGenuine Comet ready-to-install pump assembly\u003c\/li\u003e\n\u003cli data-end=\"1619\" data-start=\"1600\" data-section-id=\"17n0zer\"\u003ePart Number: 6553\u003c\/li\u003e\n\u003cli data-end=\"1666\" data-start=\"1620\" data-section-id=\"4o3hy4\"\u003eBuilt around the Comet ZWD4040G triplex pump\u003c\/li\u003e\n\u003cli data-end=\"1708\" data-start=\"1667\" data-section-id=\"17vab43\"\u003ePre-installed VRT3-310EZ unloader valve\u003c\/li\u003e\n\u003cli data-end=\"1735\" data-start=\"1709\" data-section-id=\"1wmnas0\"\u003eIntegrated bypass system\u003c\/li\u003e\n\u003cli data-end=\"1785\" data-start=\"1736\" data-section-id=\"1pbsouk\"\u003eIncludes factory-installed thermal relief valve\u003c\/li\u003e\n\u003cli data-end=\"1818\" data-start=\"1786\" data-section-id=\"g8ndhu\"\u003eRated for 4.0 GPM at 4,000 PSI\u003c\/li\u003e\n\u003cli data-end=\"1842\" data-start=\"1819\" data-section-id=\"1xqjq8i\"\u003eOperates at 3,400 RPM\u003c\/li\u003e\n\u003cli data-end=\"1891\" data-start=\"1843\" data-section-id=\"1tjs86y\"\u003e1-inch hollow shaft for direct engine mounting\u003c\/li\u003e\n\u003cli data-end=\"1931\" data-start=\"1892\" data-section-id=\"14zcy09\"\u003eCompatible with engines up to 14.5 HP\u003c\/li\u003e\n\u003cli data-end=\"1993\" data-start=\"1932\" data-section-id=\"ln6ot1\"\u003eReduces installation time with factory-installed components\u003c\/li\u003e\n\u003cli data-end=\"2059\" data-start=\"1994\" data-section-id=\"13yvk3g\"\u003eHelps protect the pump from overheating during bypass operation\u003c\/li\u003e\n\u003cli data-end=\"2124\" data-start=\"2060\" data-section-id=\"1wqaruh\"\u003eDesigned for commercial and industrial pressure washer systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2129\" data-start=\"2126\"\u003e\n\u003ch1 data-end=\"2157\" data-start=\"2131\" data-section-id=\"zjxypn\"\u003eTechnical Specifications\u003c\/h1\u003e\n\u003cp data-end=\"2180\" data-start=\"2159\"\u003e\u003cstrong data-end=\"2175\" data-start=\"2159\"\u003ePart Number:\u003c\/strong\u003e 6553\u003c\/p\u003e\n\u003cp data-end=\"2206\" data-start=\"2182\"\u003e\u003cstrong data-end=\"2197\" data-start=\"2182\"\u003ePump Model:\u003c\/strong\u003e ZWD4040G\u003c\/p\u003e\n\u003cp data-end=\"2231\" data-start=\"2208\"\u003e\u003cstrong data-end=\"2225\" data-start=\"2208\"\u003eManufacturer:\u003c\/strong\u003e Comet\u003c\/p\u003e\n\u003cp data-end=\"2275\" data-start=\"2233\"\u003e\u003cstrong data-end=\"2250\" data-start=\"2233\"\u003eProduct Type:\u003c\/strong\u003e Pump Made Ready Assembly\u003c\/p\u003e\n\u003cp data-end=\"2307\" data-start=\"2277\"\u003e\u003cstrong data-end=\"2299\" data-start=\"2277\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 4.0 GPM\u003c\/p\u003e\n\u003cp data-end=\"2340\" data-start=\"2309\"\u003e\u003cstrong data-end=\"2330\" data-start=\"2309\"\u003eMaximum Pressure:\u003c\/strong\u003e 4,000 PSI\u003c\/p\u003e\n\u003cp data-end=\"2370\" data-start=\"2342\"\u003e\u003cstrong data-end=\"2360\" data-start=\"2342\"\u003eMaximum Speed:\u003c\/strong\u003e 3,400 RPM\u003c\/p\u003e\n\u003cp data-end=\"2395\" data-start=\"2372\"\u003e\u003cstrong data-end=\"2387\" data-start=\"2372\"\u003eHorsepower:\u003c\/strong\u003e 14.5 HP\u003c\/p\u003e\n\u003cp data-end=\"2415\" data-start=\"2397\"\u003e\u003cstrong data-end=\"2412\" data-start=\"2397\"\u003eShaft Size:\u003c\/strong\u003e 1\"\u003c\/p\u003e\n\u003cp data-end=\"2447\" data-start=\"2417\"\u003e\u003cstrong data-end=\"2436\" data-start=\"2417\"\u003eUnloader Valve:\u003c\/strong\u003e VRT3-310EZ\u003c\/p\u003e\n\u003cp data-end=\"2471\" data-start=\"2449\"\u003e\u003cstrong data-end=\"2460\" data-start=\"2449\"\u003eBypass:\u003c\/strong\u003e Integrated\u003c\/p\u003e\n\u003cp data-end=\"2507\" data-start=\"2473\"\u003e\u003cstrong data-end=\"2498\" data-start=\"2473\"\u003eThermal Relief Valve:\u003c\/strong\u003e Included\u003c\/p\u003e\n\u003cp data-end=\"2527\" data-start=\"2509\"\u003e\u003cstrong data-end=\"2520\" data-start=\"2509\"\u003eWeight:\u003c\/strong\u003e 24 lbs\u003c\/p\u003e\n\u003cp data-end=\"2553\" data-start=\"2529\"\u003e\u003cstrong data-end=\"2549\" data-start=\"2529\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-end=\"2558\" data-start=\"2555\"\u003e\n\u003ch1 data-end=\"2585\" data-start=\"2560\" data-section-id=\"1w7a361\"\u003eCompatible Applications\u003c\/h1\u003e\n\u003cp data-end=\"2659\" data-start=\"2587\"\u003eDesigned for use with compatible gas-powered pressure washers utilizing:\u003c\/p\u003e\n\u003cul data-end=\"2923\" data-start=\"2661\"\u003e\n\u003cli data-end=\"2695\" data-start=\"2661\" data-section-id=\"1htioo7\"\u003eComet ZWD4040G pump applications\u003c\/li\u003e\n\u003cli data-end=\"2729\" data-start=\"2696\" data-section-id=\"pa5scz\"\u003e1-inch horizontal engine shafts\u003c\/li\u003e\n\u003cli data-end=\"2753\" data-start=\"2730\" data-section-id=\"aku40d\"\u003eEngines up to 14.5 HP\u003c\/li\u003e\n\u003cli data-end=\"2783\" data-start=\"2754\" data-section-id=\"1ftw8hk\"\u003eCommercial pressure washers\u003c\/li\u003e\n\u003cli data-end=\"2813\" data-start=\"2784\" data-section-id=\"l9cydf\"\u003eIndustrial pressure washers\u003c\/li\u003e\n\u003cli data-end=\"2849\" data-start=\"2814\" data-section-id=\"13k1ebu\"\u003eMobile pressure washing equipment\u003c\/li\u003e\n\u003cli data-end=\"2893\" data-start=\"2850\" data-section-id=\"adpgr0\"\u003eEquipment repair and replacement projects\u003c\/li\u003e\n\u003cli data-end=\"2923\" data-start=\"2894\" data-section-id=\"mt98dm\"\u003eOEM equipment installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"3042\" data-start=\"2925\"\u003eAlways verify shaft size, engine horsepower, mounting dimensions, and pressure\/flow requirements before installation.\u003c\/p\u003e\n\u003chr data-end=\"3047\" data-start=\"3044\"\u003e\n\u003ch1 data-end=\"3091\" data-start=\"3049\" data-section-id=\"iec79w\"\u003eFunction of the Pump Made Ready Assembly\u003c\/h1\u003e\n\u003cp data-end=\"3136\" data-start=\"3093\"\u003eThe PMR ZWD4040G-VRT3-310EZ assembly helps:\u003c\/p\u003e\n\u003cul data-end=\"3557\" data-start=\"3138\"\u003e\n\u003cli data-end=\"3175\" data-start=\"3138\" data-section-id=\"h7xkh9\"\u003eDeliver up to 4.0 GPM of water flow\u003c\/li\u003e\n\u003cli data-end=\"3221\" data-start=\"3176\" data-section-id=\"el5xut\"\u003eProduce operating pressures up to 4,000 PSI\u003c\/li\u003e\n\u003cli data-end=\"3291\" data-start=\"3222\" data-section-id=\"bsxab1\"\u003eRegulate system pressure through the integrated VRT3-310EZ unloader\u003c\/li\u003e\n\u003cli data-end=\"3335\" data-start=\"3292\" data-section-id=\"l3hb38\"\u003eRecirculate water during bypass operation\u003c\/li\u003e\n\u003cli data-end=\"3405\" data-start=\"3336\" data-section-id=\"wf3t9c\"\u003eProtect the pump from excessive heat using the thermal relief valve\u003c\/li\u003e\n\u003cli data-end=\"3467\" data-start=\"3406\" data-section-id=\"x8q1ft\"\u003eReduce installation time with a factory-configured assembly\u003c\/li\u003e\n\u003cli data-end=\"3557\" data-start=\"3468\" data-section-id=\"1x9kk7g\"\u003eProvide reliable, high-performance cleaning for demanding pressure washing applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"3737\" data-start=\"3559\"\u003eThe combination of the integrated bypass and thermal relief valve helps minimize heat buildup during trigger-off operation, promoting longer pump life and consistent performance.\u003c\/p\u003e\n\u003chr data-end=\"3742\" data-start=\"3739\"\u003e\n\u003ch1 data-end=\"3780\" data-start=\"3744\" data-section-id=\"mqxmo4\"\u003eCommon Signs Replacement Is Needed\u003c\/h1\u003e\n\u003cp data-end=\"3822\" data-start=\"3782\"\u003eReplace the pump assembly if you notice:\u003c\/p\u003e\n\u003cul data-end=\"4089\" data-start=\"3824\"\u003e\n\u003cli data-end=\"3848\" data-start=\"3824\" data-section-id=\"18j1344\"\u003eLow operating pressure\u003c\/li\u003e\n\u003cli data-end=\"3869\" data-start=\"3849\" data-section-id=\"oo0ju3\"\u003eReduced water flow\u003c\/li\u003e\n\u003cli data-end=\"3892\" data-start=\"3870\" data-section-id=\"1kx3bv3\"\u003eExcessive pump noise\u003c\/li\u003e\n\u003cli data-end=\"3922\" data-start=\"3893\" data-section-id=\"1szu82v\"\u003eExternal water or oil leaks\u003c\/li\u003e\n\u003cli data-end=\"3941\" data-start=\"3923\" data-section-id=\"l690na\"\u003ePump overheating\u003c\/li\u003e\n\u003cli data-end=\"3966\" data-start=\"3942\" data-section-id=\"y3su5m\"\u003eUnloader valve failure\u003c\/li\u003e\n\u003cli data-end=\"3994\" data-start=\"3967\" data-section-id=\"wp9n39\"\u003eBypass system malfunction\u003c\/li\u003e\n\u003cli data-end=\"4028\" data-start=\"3995\" data-section-id=\"1g2txwa\"\u003eCracked or damaged pump housing\u003c\/li\u003e\n\u003cli data-end=\"4054\" data-start=\"4029\" data-section-id=\"16xn7rj\"\u003eExcessive internal wear\u003c\/li\u003e\n\u003cli data-end=\"4089\" data-start=\"4055\" data-section-id=\"5dv9w8\"\u003eThermal relief valve malfunction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"4226\" data-start=\"4091\"\u003eReplacing the complete pump assembly helps restore pressure washer performance while reducing installation time and equipment downtime.\u003c\/p\u003e\n\u003chr data-end=\"4231\" data-start=\"4228\"\u003e\n\u003ch1 data-end=\"4263\" data-start=\"4233\" data-section-id=\"1547z5u\"\u003eInstallation \u0026amp; Service Notes\u003c\/h1\u003e\n\u003cul data-end=\"4800\" data-start=\"4265\"\u003e\n\u003cli data-end=\"4329\" data-start=\"4265\" data-section-id=\"iv93qe\"\u003eShut down the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-end=\"4415\" data-start=\"4330\" data-section-id=\"1r2lyqw\"\u003eVerify compatibility with the engine shaft, horsepower, and mounting configuration.\u003c\/li\u003e\n\u003cli data-end=\"4498\" data-start=\"4416\" data-section-id=\"12vr5ek\"\u003eInstall the pump onto the engine according to the manufacturer's specifications.\u003c\/li\u003e\n\u003cli data-end=\"4570\" data-start=\"4499\" data-section-id=\"rxp1cv\"\u003eConnect the water inlet, high-pressure outlet, and required plumbing.\u003c\/li\u003e\n\u003cli data-end=\"4668\" data-start=\"4571\" data-section-id=\"xvzqda\"\u003eVerify the VRT3-310EZ unloader, bypass system, and thermal relief valve are properly installed.\u003c\/li\u003e\n\u003cli data-end=\"4712\" data-start=\"4669\" data-section-id=\"z9jstr\"\u003ePrime the pump with water before startup.\u003c\/li\u003e\n\u003cli data-end=\"4800\" data-start=\"4713\" data-section-id=\"oumvsh\"\u003eInspect the system for leaks and verify proper operating pressure after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"5020\" data-start=\"4802\"\u003e\u003cstrong data-end=\"4816\" data-start=\"4802\"\u003eImportant:\u003c\/strong\u003e Never operate the pump without an adequate water supply. Running the pump dry or allowing prolonged bypass operation without a functioning thermal relief valve can significantly reduce pump service life.\u003c\/p\u003e\n\u003chr data-end=\"5025\" data-start=\"5022\"\u003e\n\u003ch1 data-end=\"5056\" data-start=\"5027\" data-section-id=\"16tfrdt\"\u003eMaintenance Recommendations\u003c\/h1\u003e\n\u003cul data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"5545\" data-start=\"5058\"\u003e\n\u003cli data-end=\"5126\" data-start=\"5058\" data-section-id=\"869zyl\"\u003eInspect the pump regularly for leaks and abnormal operating noise.\u003c\/li\u003e\n\u003cli data-end=\"5209\" data-start=\"5127\" data-section-id=\"13u8k4m\"\u003eCheck pump oil level and service according to Comet maintenance recommendations.\u003c\/li\u003e\n\u003cli data-end=\"5269\" data-start=\"5210\" data-section-id=\"h1xe1r\"\u003eVerify proper operation of the VRT3-310EZ unloader valve.\u003c\/li\u003e\n\u003cli data-end=\"5336\" data-start=\"5270\" data-section-id=\"1tq2ds8\"\u003eInspect the bypass system and thermal relief valve periodically.\u003c\/li\u003e\n\u003cli data-end=\"5404\" data-start=\"5337\" data-section-id=\"r6dpad\"\u003eFlush the system after use when pumping dirty or corrosive water.\u003c\/li\u003e\n\u003cli data-is-last-node=\"\" data-end=\"5545\" data-start=\"5405\" data-section-id=\"t89m7t\"\u003eUse only genuine OEM Comet replacement parts and approved accessories to maintain maximum performance, reliability, and long service life.\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\n\u003c\/div\u003e","brand":"Comet","offers":[{"title":"Default Title","offer_id":53441641152875,"sku":null,"price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/ZWD4040G-VRT3-310EZ.webp?v=1782831610","url":"https:\/\/generalsprayers.com\/products\/comet-pmr-zwd4040g-vrt3-310ez-pump-made-ready-with-bypass-thermal-relief-4-0-gpm-4000-psi","provider":"GeneralSprayers","version":"1.0","type":"link"}