{"product_id":"dolly-kit-for-cat-34055-valve-kit-4sf-pumps-1-kit-per-pump-oem-replacement-part","title":"Dolly Kit for CAT 34055 Valve Kit 4SF Pumps (1 Kit per Pump) – OEM Replacement Part","description":"\u003cdiv class=\"\" data-turn-id-container=\"3a526383-c657-4183-bfc7-a7f472df7713\" 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-(--sticky-padding-top)\" dir=\"auto\" data-turn-id=\"3a526383-c657-4183-bfc7-a7f472df7713\" data-turn-id-container=\"3a526383-c657-4183-bfc7-a7f472df7713\" data-testid=\"conversation-turn-321\" data-turn=\"user\"\u003e\u003c\/section\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a35562f-a1fc-83ea-bfdd-f10b85f84e9a-26\" 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-6a35562f-a1fc-83ea-bfdd-f10b85f84e9a-26\" data-turn-id-container=\"request-6a35562f-a1fc-83ea-bfdd-f10b85f84e9a-26\" data-testid=\"conversation-turn-322\" 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=\"18d8cebe-bb3a-42cf-a1e0-1ce731b77f88\" 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=\"139\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 7440\u003cbr data-start=\"21\" data-end=\"24\"\u003e\u003cstrong data-start=\"24\" data-end=\"37\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Parts → Pump Parts → Check Valves \u0026amp; Repair Kits\u003cbr data-start=\"101\" data-end=\"104\"\u003e\u003cstrong data-start=\"104\" data-end=\"113\"\u003eType:\u003c\/strong\u003e CAT Pumps 34055 Valve Kit\u003c\/p\u003e\n\u003chr data-start=\"141\" data-end=\"144\"\u003e\n\u003cp data-start=\"222\" data-end=\"716\"\u003eThe \u003cstrong data-start=\"226\" data-end=\"286\"\u003eDolly Kit for CAT 34055 Valve Kit 4SF Pumps (Part #7440)\u003c\/strong\u003e is a genuine OEM replacement valve service kit designed to restore proper flow control and maintain peak performance in compatible \u003cstrong data-start=\"418\" data-end=\"464\"\u003eCAT Pumps 4SF series triplex plunger pumps\u003c\/strong\u003e. This kit includes \u003cstrong data-start=\"484\" data-end=\"541\"\u003ereplacement valve components and O-rings (8x3 pieces)\u003c\/strong\u003e required for servicing worn, damaged, or contaminated valve assemblies, helping maintain consistent operating pressure, improve flow efficiency, and extend pump service life.\u003c\/p\u003e\n\u003chr data-start=\"1310\" data-end=\"1313\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1315\" data-end=\"1341\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1343\" data-end=\"1839\"\u003e\n\u003cli data-section-id=\"3g80ip\" data-start=\"1343\" data-end=\"1382\"\u003eGenuine CAT Pumps OEM replacement kit\u003c\/li\u003e\n\u003cli data-section-id=\"1jx8tnw\" data-start=\"1383\" data-end=\"1424\"\u003eDesigned for CAT Pumps 4SF series pumps\u003c\/li\u003e\n\u003cli data-section-id=\"1yb2zd6\" data-start=\"1425\" data-end=\"1466\"\u003eIncludes replacement valves and O-rings\u003c\/li\u003e\n\u003cli data-section-id=\"erngi\" data-start=\"1467\" data-end=\"1520\"\u003eKit contains valve and seal components (8x3 pieces)\u003c\/li\u003e\n\u003cli data-section-id=\"1nc9z11\" data-start=\"1521\" data-end=\"1559\"\u003eHelps restore proper valve operation\u003c\/li\u003e\n\u003cli data-section-id=\"dfja83\" data-start=\"1560\" data-end=\"1599\"\u003eMaintains operating pressure and flow\u003c\/li\u003e\n\u003cli data-section-id=\"127n7n5\" data-start=\"1600\" data-end=\"1644\"\u003eReduces internal leakage and pressure loss\u003c\/li\u003e\n\u003cli data-section-id=\"fwwkb1\" data-start=\"1645\" data-end=\"1682\"\u003eSupports efficient pump performance\u003c\/li\u003e\n\u003cli data-section-id=\"16r8rhd\" data-start=\"1683\" data-end=\"1723\"\u003eOEM-quality materials and construction\u003c\/li\u003e\n\u003cli data-section-id=\"11ske17\" data-start=\"1724\" data-end=\"1778\"\u003eIdeal for preventative maintenance and pump rebuilds\u003c\/li\u003e\n\u003cli data-section-id=\"1d7g3nt\" data-start=\"1779\" data-end=\"1806\"\u003eDirect replacement design\u003c\/li\u003e\n\u003cli data-section-id=\"18a0c0f\" data-start=\"1807\" data-end=\"1839\"\u003eHelps extend pump service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1841\" data-end=\"1844\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1846\" data-end=\"1873\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1875\" data-end=\"1896\"\u003e\u003cstrong data-start=\"1875\" data-end=\"1891\"\u003ePart Number:\u003c\/strong\u003e 7440\u003c\/p\u003e\n\u003cp data-start=\"1898\" data-end=\"1925\"\u003e\u003cstrong data-start=\"1898\" data-end=\"1915\"\u003eManufacturer:\u003c\/strong\u003e CAT Pumps\u003c\/p\u003e\n\u003cp data-start=\"1927\" data-end=\"1963\"\u003e\u003cstrong data-start=\"1927\" data-end=\"1957\"\u003eManufacturer Model Number:\u003c\/strong\u003e 34055\u003c\/p\u003e\n\u003cp data-start=\"1965\" data-end=\"2028\"\u003e\u003cstrong data-start=\"1965\" data-end=\"1989\"\u003eProduct Description:\u003c\/strong\u003e Kit Dolly C2 Valves + O-Rings (8x3 pc)\u003c\/p\u003e\n\u003cp data-start=\"2030\" data-end=\"2065\"\u003e\u003cstrong data-start=\"2030\" data-end=\"2047\"\u003eProduct Type:\u003c\/strong\u003e Valve Service Kit\u003c\/p\u003e\n\u003cp data-start=\"2067\" data-end=\"2113\"\u003e\u003cstrong data-start=\"2067\" data-end=\"2084\"\u003eKit Contents:\u003c\/strong\u003e Valve Components and O-Rings\u003c\/p\u003e\n\u003cp data-start=\"2115\" data-end=\"2165\"\u003e\u003cstrong data-start=\"2115\" data-end=\"2138\"\u003ePump Compatibility:\u003c\/strong\u003e CAT Pumps 4SF Series Pumps\u003c\/p\u003e\n\u003cp data-start=\"2167\" data-end=\"2191\"\u003e\u003cstrong data-start=\"2167\" data-end=\"2187\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003cp data-start=\"2193\" data-end=\"2243\"\u003e\u003cstrong data-start=\"2193\" data-end=\"2209\"\u003eApplication:\u003c\/strong\u003e Pump Valve Maintenance and Repair\u003c\/p\u003e\n\u003chr data-start=\"2245\" data-end=\"2248\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"2250\" data-end=\"2272\"\u003eCommon Applications\u003c\/h2\u003e\n\u003cul data-start=\"2274\" data-end=\"2521\"\u003e\n\u003cli data-section-id=\"1j8vlgk\" data-start=\"2274\" data-end=\"2302\"\u003eCAT Pumps 4SF series pumps\u003c\/li\u003e\n\u003cli data-section-id=\"1y56h98\" data-start=\"2303\" data-end=\"2326\"\u003ePressure washer pumps\u003c\/li\u003e\n\u003cli data-section-id=\"1oa2tqu\" data-start=\"2327\" data-end=\"2366\"\u003eCommercial pressure washing equipment\u003c\/li\u003e\n\u003cli data-section-id=\"16ga20s\" data-start=\"2367\" data-end=\"2396\"\u003eIndustrial cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"1navbxu\" data-start=\"2397\" data-end=\"2430\"\u003eAgricultural spraying equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1hb3h7x\" data-start=\"2431\" data-end=\"2454\"\u003eFleet washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"kd18ak\" data-start=\"2455\" data-end=\"2481\"\u003eWater transfer equipment\u003c\/li\u003e\n\u003cli data-section-id=\"wx2rbd\" data-start=\"2482\" data-end=\"2521\"\u003ePump rebuild and maintenance services\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2523\" data-end=\"2526\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"2528\" data-end=\"2551\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"2553\" data-end=\"2853\"\u003e\n\u003cli data-section-id=\"n9plic\" data-start=\"2553\" data-end=\"2586\"\u003eRestores proper valve operation\u003c\/li\u003e\n\u003cli data-section-id=\"1f2yd2j\" data-start=\"2587\" data-end=\"2633\"\u003eHelps maintain consistent operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1g9sr4h\" data-start=\"2634\" data-end=\"2666\"\u003eImproves water flow efficiency\u003c\/li\u003e\n\u003cli data-section-id=\"id47i5\" data-start=\"2667\" data-end=\"2704\"\u003eReduces internal bypass and leakage\u003c\/li\u003e\n\u003cli data-section-id=\"152r7fa\" data-start=\"2705\" data-end=\"2739\"\u003eSupports smooth pump performance\u003c\/li\u003e\n\u003cli data-section-id=\"1f4r8tb\" data-start=\"2740\" data-end=\"2781\"\u003eImproves pump reliability and longevity\u003c\/li\u003e\n\u003cli data-section-id=\"8jrmjj\" data-start=\"2782\" data-end=\"2825\"\u003eMaintains consistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"lmun4u\" data-start=\"2826\" data-end=\"2853\"\u003eExtends pump service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2855\" data-end=\"2858\"\u003e\n\u003ch2 data-section-id=\"1ttojmv\" data-start=\"2860\" data-end=\"2901\"\u003eSigns Pump Valves May Need Replacement\u003c\/h2\u003e\n\u003cp data-start=\"2903\" data-end=\"2946\"\u003eReplace the valve components if you notice:\u003c\/p\u003e\n\u003cul data-start=\"2948\" data-end=\"3178\"\u003e\n\u003cli data-section-id=\"5zjyxm\" data-start=\"2948\" data-end=\"2976\"\u003eLoss of operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"17x0na5\" data-start=\"2977\" data-end=\"3004\"\u003ePulsating pressure output\u003c\/li\u003e\n\u003cli data-section-id=\"1mlu30c\" data-start=\"3005\" data-end=\"3024\"\u003eReduced flow rate\u003c\/li\u003e\n\u003cli data-section-id=\"pmpq9m\" data-start=\"3025\" data-end=\"3049\"\u003eInternal water leakage\u003c\/li\u003e\n\u003cli data-section-id=\"1xk76v\" data-start=\"3050\" data-end=\"3083\"\u003eDifficulty maintaining pressure\u003c\/li\u003e\n\u003cli data-section-id=\"z63v0g\" data-start=\"3084\" data-end=\"3106\"\u003eExcessive valve wear\u003c\/li\u003e\n\u003cli data-section-id=\"1t2zv4u\" data-start=\"3107\" data-end=\"3146\"\u003eDamaged O-rings or sealing components\u003c\/li\u003e\n\u003cli data-section-id=\"1d1scdr\" data-start=\"3147\" data-end=\"3178\"\u003eInconsistent pump performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3180\" data-end=\"3183\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"3185\" data-end=\"3206\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"3208\" data-end=\"3637\"\u003e\n\u003cli data-section-id=\"v1qt1w\" data-start=\"3208\" data-end=\"3273\"\u003eShut down the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"1vuo091\" data-start=\"3274\" data-end=\"3311\"\u003eDisconnect power and water supply.\u003c\/li\u003e\n\u003cli data-section-id=\"cyceas\" data-start=\"3312\" data-end=\"3375\"\u003eRemove valve caps according to CAT Pumps service procedures.\u003c\/li\u003e\n\u003cli data-section-id=\"1w53we4\" data-start=\"3376\" data-end=\"3419\"\u003eRemove worn valve and O-ring components.\u003c\/li\u003e\n\u003cli data-section-id=\"tiz0wt\" data-start=\"3420\" data-end=\"3455\"\u003eClean valve chambers thoroughly.\u003c\/li\u003e\n\u003cli data-section-id=\"1alnjno\" data-start=\"3456\" data-end=\"3505\"\u003eInstall new OEM valve components from the kit.\u003c\/li\u003e\n\u003cli data-section-id=\"cjndz0\" data-start=\"3506\" data-end=\"3570\"\u003eReassemble the pump according to manufacturer specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"1h14qb0\" data-start=\"3571\" data-end=\"3637\"\u003eTest operation and verify proper pressure and flow performance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"3639\" data-end=\"3882\"\u003e\u003cstrong data-start=\"3639\" data-end=\"3653\"\u003eImportant:\u003c\/strong\u003e Always consult the CAT Pumps service manual and verify compatibility with your specific 4SF pump model before installation. Verify the number of kits required for your pump configuration using the manufacturer's parts breakdown.\u003c\/p\u003e\n\u003chr data-start=\"3884\" data-end=\"3887\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"3889\" data-end=\"3919\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"3921\" data-end=\"4229\"\u003e\n\u003cli data-section-id=\"lljp6b\" data-start=\"3921\" data-end=\"3970\"\u003eInspect valves during routine pump maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"1xqdbos\" data-start=\"3971\" data-end=\"4014\"\u003eReplace worn valves and O-rings promptly.\u003c\/li\u003e\n\u003cli data-section-id=\"1i58m47\" data-start=\"4015\" data-end=\"4050\"\u003eMaintain proper inlet filtration.\u003c\/li\u003e\n\u003cli data-section-id=\"ih7cye\" data-start=\"4051\" data-end=\"4095\"\u003eUse clean water sources whenever possible.\u003c\/li\u003e\n\u003cli data-section-id=\"1r2x7kj\" data-start=\"4096\" data-end=\"4152\"\u003eFollow manufacturer-recommended maintenance schedules.\u003c\/li\u003e\n\u003cli data-section-id=\"1vv9nrr\" data-start=\"4153\" data-end=\"4229\"\u003eAddress pressure fluctuations immediately to prevent additional pump wear.\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":"CAT Pumps","offers":[{"title":"Default Title","offer_id":53421870317931,"sku":null,"price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/GeneralSprayers_Logo_250x250_1_9c12853f-1a8d-4339-9b1d-fae4ae361de7.png?v=1782317904","url":"https:\/\/generalsprayers.com\/products\/dolly-kit-for-cat-34055-valve-kit-4sf-pumps-1-kit-per-pump-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}