{"product_id":"comet-zwd4035g-pressure-washer-pump-4-0-gpm-3500-psi-1-gas-flange","title":"Comet ZWD4035G Pressure Washer Pump – 4.0 GPM 3500 PSI 1\" Gas Flange","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-5\" 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-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-5\" data-turn-id-container=\"request-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-5\" data-testid=\"conversation-turn-160\" 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 data-conversation-screenshot-content=\"\" 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=\"d6061ae1-f368-40d4-92b5-09cebb4564ba\" 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=\"188\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e ZWD4035G\u003cbr data-start=\"25\" data-end=\"28\"\u003e\u003cstrong data-start=\"28\" data-end=\"41\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Pumps → Triplex Pumps → Gas Pressure Washer Pumps\u003cbr data-start=\"107\" data-end=\"110\"\u003e\u003cstrong data-start=\"110\" data-end=\"119\"\u003eType:\u003c\/strong\u003e Comet ZWD4035G Pressure Washer Pump – 4.0 GPM 3500 PSI 1\" Gas Flange\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"190\" data-end=\"193\"\u003e\n\u003cp data-start=\"267\" data-end=\"745\"\u003eThe \u003cstrong data-start=\"271\" data-end=\"327\"\u003eComet ZWD4035G Pressure Washer Pump (Part #ZWD4035G)\u003c\/strong\u003e is a genuine OEM triplex plunger pump engineered for demanding commercial and industrial pressure washing applications. Manufactured by \u003cstrong data-start=\"464\" data-end=\"479\"\u003eComet Pumps\u003c\/strong\u003e, this heavy-duty direct-drive pump delivers \u003cstrong data-start=\"524\" data-end=\"548\"\u003e4.0 GPM at 3,500 PSI\u003c\/strong\u003e, providing exceptional cleaning performance for fleet washing, heavy equipment, construction sites, agricultural operations, manufacturing facilities, and other professional cleaning environments.\u003c\/p\u003e\n\u003chr data-start=\"1348\" data-end=\"1351\"\u003e\n\u003ch1 data-section-id=\"1oef6j8\" data-start=\"1353\" data-end=\"1378\"\u003eKey Features \u0026amp; Benefits\u003c\/h1\u003e\n\u003cul data-start=\"1380\" data-end=\"1853\"\u003e\n\u003cli data-section-id=\"zrz0lp\" data-start=\"1380\" data-end=\"1428\"\u003eGenuine Comet OEM triplex pressure washer pump\u003c\/li\u003e\n\u003cli data-section-id=\"1xqs22\" data-start=\"1429\" data-end=\"1452\"\u003ePart Number: ZWD4035G\u003c\/li\u003e\n\u003cli data-section-id=\"19tw6a9\" data-start=\"1453\" data-end=\"1488\"\u003eHeavy-duty triplex plunger design\u003c\/li\u003e\n\u003cli data-section-id=\"pxio85\" data-start=\"1489\" data-end=\"1526\"\u003eDelivers up to 4.0 GPM at 3,500 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"ah3gmi\" data-start=\"1527\" data-end=\"1570\"\u003eDesigned for gas-powered pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1tjs86y\" data-start=\"1571\" data-end=\"1619\"\u003e1-inch hollow shaft for direct engine mounting\u003c\/li\u003e\n\u003cli data-section-id=\"1xqjq8i\" data-start=\"1620\" data-end=\"1643\"\u003eOperates at 3,400 RPM\u003c\/li\u003e\n\u003cli data-section-id=\"c8w154\" data-start=\"1644\" data-end=\"1684\"\u003eCompatible with engines up to 10.7 GHP\u003c\/li\u003e\n\u003cli data-section-id=\"awldon\" data-start=\"1685\" data-end=\"1733\"\u003e15 mm ceramic plungers for extended durability\u003c\/li\u003e\n\u003cli data-section-id=\"3wdm8b\" data-start=\"1734\" data-end=\"1756\"\u003e1\/2\" FPT water inlet\u003c\/li\u003e\n\u003cli data-section-id=\"wqesop\" data-start=\"1757\" data-end=\"1788\"\u003e3\/8\" FPT high-pressure outlet\u003c\/li\u003e\n\u003cli data-section-id=\"1ozeeuz\" data-start=\"1789\" data-end=\"1853\"\u003eOEM-quality construction for demanding commercial applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1855\" data-end=\"1858\"\u003e\n\u003ch1 data-section-id=\"zjxypn\" data-start=\"1860\" data-end=\"1886\"\u003eTechnical Specifications\u003c\/h1\u003e\n\u003cp data-start=\"1888\" data-end=\"1913\"\u003e\u003cstrong data-start=\"1888\" data-end=\"1904\"\u003ePart Number:\u003c\/strong\u003e ZWD4035G\u003c\/p\u003e\n\u003cp data-start=\"1915\" data-end=\"1939\"\u003e\u003cstrong data-start=\"1915\" data-end=\"1930\"\u003ePump Model:\u003c\/strong\u003e ZWD4035G\u003c\/p\u003e\n\u003cp data-start=\"1941\" data-end=\"1970\"\u003e\u003cstrong data-start=\"1941\" data-end=\"1958\"\u003eManufacturer:\u003c\/strong\u003e Comet Pumps\u003c\/p\u003e\n\u003cp data-start=\"1972\" data-end=\"2018\"\u003e\u003cstrong data-start=\"1972\" data-end=\"1989\"\u003eProduct Type:\u003c\/strong\u003e Triplex Pressure Washer Pump\u003c\/p\u003e\n\u003cp data-start=\"2020\" data-end=\"2050\"\u003e\u003cstrong data-start=\"2020\" data-end=\"2042\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 4.0 GPM\u003c\/p\u003e\n\u003cp data-start=\"2052\" data-end=\"2083\"\u003e\u003cstrong data-start=\"2052\" data-end=\"2073\"\u003eMaximum Pressure:\u003c\/strong\u003e 3,500 PSI\u003c\/p\u003e\n\u003cp data-start=\"2085\" data-end=\"2118\"\u003e\u003cstrong data-start=\"2085\" data-end=\"2108\"\u003eMaximum Pump Speed:\u003c\/strong\u003e 3,400 RPM\u003c\/p\u003e\n\u003cp data-start=\"2120\" data-end=\"2150\"\u003e\u003cstrong data-start=\"2120\" data-end=\"2145\"\u003eGas Horsepower (GHP):\u003c\/strong\u003e 10.7\u003c\/p\u003e\n\u003cp data-start=\"2152\" data-end=\"2183\"\u003e\u003cstrong data-start=\"2152\" data-end=\"2167\"\u003eShaft Size:\u003c\/strong\u003e 1\" Hollow Shaft\u003c\/p\u003e\n\u003cp data-start=\"2185\" data-end=\"2216\"\u003e\u003cstrong data-start=\"2185\" data-end=\"2210\"\u003eCeramic Plunger Size:\u003c\/strong\u003e 15 mm\u003c\/p\u003e\n\u003cp data-start=\"2218\" data-end=\"2243\"\u003e\u003cstrong data-start=\"2218\" data-end=\"2234\"\u003eWater Inlet:\u003c\/strong\u003e 1\/2\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2245\" data-end=\"2279\"\u003e\u003cstrong data-start=\"2245\" data-end=\"2270\"\u003eHigh-Pressure Outlet:\u003c\/strong\u003e 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2281\" data-end=\"2326\"\u003e\u003cstrong data-start=\"2281\" data-end=\"2301\"\u003eConnection Size:\u003c\/strong\u003e 1\/2\" Inlet \/ 3\/8\" Outlet\u003c\/p\u003e\n\u003cp data-start=\"2328\" data-end=\"2346\"\u003e\u003cstrong data-start=\"2328\" data-end=\"2339\"\u003eWeight:\u003c\/strong\u003e 17 lbs\u003c\/p\u003e\n\u003cp data-start=\"2348\" data-end=\"2372\"\u003e\u003cstrong data-start=\"2348\" data-end=\"2368\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2374\" data-end=\"2377\"\u003e\n\u003ch1 data-section-id=\"1w7a361\" data-start=\"2379\" data-end=\"2404\"\u003eCompatible Applications\u003c\/h1\u003e\n\u003cp data-start=\"2406\" data-end=\"2485\"\u003eDesigned for use with compatible gas-powered pressure washer systems featuring:\u003c\/p\u003e\n\u003cul data-start=\"2487\" data-end=\"2812\"\u003e\n\u003cli data-section-id=\"pa5scz\" data-start=\"2487\" data-end=\"2520\"\u003e1-inch horizontal engine shafts\u003c\/li\u003e\n\u003cli data-section-id=\"19w59al\" data-start=\"2521\" data-end=\"2559\"\u003eDirect-drive pressure washer systems\u003c\/li\u003e\n\u003cli data-section-id=\"1jmsnsc\" data-start=\"2560\" data-end=\"2584\"\u003eEngines up to 10.7 GHP\u003c\/li\u003e\n\u003cli data-section-id=\"1ftw8hk\" data-start=\"2585\" data-end=\"2614\"\u003eCommercial pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1wpc0sg\" data-start=\"2615\" data-end=\"2646\"\u003eIndustrial cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1hb3h7x\" data-start=\"2647\" data-end=\"2670\"\u003eFleet washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"9bm7jy\" data-start=\"2671\" data-end=\"2704\"\u003eAgricultural equipment cleaning\u003c\/li\u003e\n\u003cli data-section-id=\"1embcwq\" data-start=\"2705\" data-end=\"2738\"\u003eConstruction equipment cleaning\u003c\/li\u003e\n\u003cli data-section-id=\"6hse24\" data-start=\"2739\" data-end=\"2782\"\u003eEquipment replacement and repair projects\u003c\/li\u003e\n\u003cli data-section-id=\"mt98dm\" data-start=\"2783\" data-end=\"2812\"\u003eOEM equipment installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2814\" data-end=\"2930\"\u003eAlways verify shaft size, mounting configuration, engine horsepower, and pressure\/flow requirements before ordering.\u003c\/p\u003e\n\u003chr data-start=\"2932\" data-end=\"2935\"\u003e\n\u003ch1 data-section-id=\"1ebu7jn\" data-start=\"2937\" data-end=\"2975\"\u003eFunction of the Pressure Washer Pump\u003c\/h1\u003e\n\u003cp data-start=\"2977\" data-end=\"3001\"\u003eThe ZWD4035G pump helps:\u003c\/p\u003e\n\u003cul data-start=\"3003\" data-end=\"3294\"\u003e\n\u003cli data-section-id=\"1f0pk6l\" data-start=\"3003\" data-end=\"3044\"\u003eDeliver up to \u003cstrong data-start=\"3019\" data-end=\"3030\"\u003e4.0 GPM\u003c\/strong\u003e of water flow\u003c\/li\u003e\n\u003cli data-section-id=\"kcbyty\" data-start=\"3045\" data-end=\"3095\"\u003eGenerate operating pressures up to \u003cstrong data-start=\"3082\" data-end=\"3095\"\u003e3,500 PSI\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"f9y9rb\" data-start=\"3096\" data-end=\"3133\"\u003eRestore pressure washer performance\u003c\/li\u003e\n\u003cli data-section-id=\"8dorlo\" data-start=\"3134\" data-end=\"3204\"\u003eProvide powerful cleaning for commercial and industrial applications\u003c\/li\u003e\n\u003cli data-section-id=\"illq47\" data-start=\"3205\" data-end=\"3247\"\u003eDeliver smooth, efficient pump operation\u003c\/li\u003e\n\u003cli data-section-id=\"veykcm\" data-start=\"3248\" data-end=\"3294\"\u003eSupport continuous-duty cleaning performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3296\" data-end=\"3440\"\u003eIts heavy-duty triplex plunger design provides superior durability, improved efficiency, and longer service life than conventional pump designs.\u003c\/p\u003e\n\u003chr data-start=\"3442\" data-end=\"3445\"\u003e\n\u003ch1 data-section-id=\"mqxmo4\" data-start=\"3447\" data-end=\"3483\"\u003eCommon Signs Replacement Is Needed\u003c\/h1\u003e\n\u003cp data-start=\"3485\" data-end=\"3516\"\u003eReplace the pump if you notice:\u003c\/p\u003e\n\u003cul data-start=\"3518\" data-end=\"3741\"\u003e\n\u003cli data-section-id=\"zu24k4\" data-start=\"3518\" data-end=\"3546\"\u003eReduced operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1f1izt\" data-start=\"3547\" data-end=\"3569\"\u003eDecreased water flow\u003c\/li\u003e\n\u003cli data-section-id=\"10eqapm\" data-start=\"3570\" data-end=\"3590\"\u003eWater or oil leaks\u003c\/li\u003e\n\u003cli data-section-id=\"rs3f56\" data-start=\"3591\" data-end=\"3618\"\u003eExcessive operating noise\u003c\/li\u003e\n\u003cli data-section-id=\"1g2txwa\" data-start=\"3619\" data-end=\"3652\"\u003eCracked or damaged pump housing\u003c\/li\u003e\n\u003cli data-section-id=\"16xn7rj\" data-start=\"3653\" data-end=\"3678\"\u003eExcessive internal wear\u003c\/li\u003e\n\u003cli data-section-id=\"1alt067\" data-start=\"3679\" data-end=\"3709\"\u003eLoss of cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1s772py\" data-start=\"3710\" data-end=\"3741\"\u003ePump failure during operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3743\" data-end=\"3838\"\u003eReplacing a worn pump restores cleaning performance while minimizing costly equipment downtime.\u003c\/p\u003e\n\u003chr data-start=\"3840\" data-end=\"3843\"\u003e\n\u003ch1 data-section-id=\"1547z5u\" data-start=\"3845\" data-end=\"3875\"\u003eInstallation \u0026amp; Service Notes\u003c\/h1\u003e\n\u003cul data-start=\"3877\" data-end=\"4353\"\u003e\n\u003cli data-section-id=\"12zv5pq\" data-start=\"3877\" data-end=\"3956\"\u003eShut down the pressure washer and disconnect the spark plug before servicing.\u003c\/li\u003e\n\u003cli data-section-id=\"s6lqar\" data-start=\"3957\" data-end=\"3987\"\u003eRelieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"gtuvzx\" data-start=\"3988\" data-end=\"4107\"\u003eVerify compatibility with the \u003cstrong data-start=\"4020\" data-end=\"4036\"\u003e1-inch shaft\u003c\/strong\u003e, mounting configuration, engine horsepower, and pressure requirements.\u003c\/li\u003e\n\u003cli data-section-id=\"rdentd\" data-start=\"4108\" data-end=\"4174\"\u003eInstall the pump according to the manufacturer's specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"u6is5z\" data-start=\"4175\" data-end=\"4241\"\u003eConnect the \u003cstrong data-start=\"4189\" data-end=\"4207\"\u003e1\/2\" FPT inlet\u003c\/strong\u003e and \u003cstrong data-start=\"4212\" data-end=\"4231\"\u003e3\/8\" FPT outlet\u003c\/strong\u003e fittings.\u003c\/li\u003e\n\u003cli data-section-id=\"z9jstr\" data-start=\"4242\" data-end=\"4285\"\u003ePrime the pump with water before startup.\u003c\/li\u003e\n\u003cli data-section-id=\"2i5ge8\" data-start=\"4286\" data-end=\"4353\"\u003eVerify proper operation and inspect for leaks after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4355\" data-end=\"4549\"\u003e\u003cstrong data-start=\"4355\" data-end=\"4369\"\u003eImportant:\u003c\/strong\u003e Never operate the pump without an adequate water supply. Running the pump dry can quickly damage the ceramic plungers, seals, and valves, significantly reducing pump service life.\u003c\/p\u003e\n\u003chr data-start=\"4551\" data-end=\"4554\"\u003e\n\u003ch1 data-section-id=\"16tfrdt\" data-start=\"4556\" data-end=\"4585\"\u003eMaintenance Recommendations\u003c\/h1\u003e\n\u003cul data-start=\"4587\" data-end=\"5063\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"ki1sxp\" data-start=\"4587\" data-end=\"4686\"\u003eCheck the pump oil level regularly and service the pump according to Comet maintenance schedules.\u003c\/li\u003e\n\u003cli data-section-id=\"hekov1\" data-start=\"4687\" data-end=\"4786\"\u003eInspect ceramic plungers, packings, water seals, valves, and fittings during routine maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"102oikd\" data-start=\"4787\" data-end=\"4852\"\u003eMaintain clean, filtered inlet water to minimize internal wear.\u003c\/li\u003e\n\u003cli data-section-id=\"amy22g\" data-start=\"4853\" data-end=\"4918\"\u003eFlush the pump after use when pumping dirty or corrosive water.\u003c\/li\u003e\n\u003cli data-section-id=\"qwqn77\" data-start=\"4919\" data-end=\"5063\" data-is-last-node=\"\"\u003eUse only genuine OEM Comet replacement parts and approved lubricants to maintain optimum pump 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":53446197903723,"sku":null,"price":530.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/ZWD4035G.jpg?v=1782929947","url":"https:\/\/generalsprayers.com\/products\/comet-zwd4035g-pressure-washer-pump-4-0-gpm-3500-psi-1-gas-flange","provider":"GeneralSprayers","version":"1.0","type":"link"}