{"product_id":"dolly-kit-for-cat-30821-valves-310-340-350-pumps-need-2-oem-replacement-part","title":"Dolly Kit for CAT 30821 Valves 310, 340 \u0026 350 Pumps (Need 2) – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"139\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 7433\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 30821 Valve Kit\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"141\" data-end=\"144\"\u003e\n\u003cp data-start=\"239\" data-end=\"755\"\u003eThe \u003cstrong data-start=\"243\" data-end=\"311\"\u003eDolly Kit for CAT 30821 Valves 310, 340 \u0026amp; 350 Pumps (Part #7433)\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=\"443\" data-end=\"503\"\u003eCAT Pumps 310, 340, and 350 series triplex plunger pumps\u003c\/strong\u003e. This kit includes \u003cstrong data-start=\"523\" data-end=\"580\"\u003ereplacement valve components and O-rings (2x3 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\u003cp data-start=\"1132\" data-end=\"1283\"\u003e\u003cstrong data-start=\"1132\" data-end=\"1146\"\u003eImportant:\u003c\/strong\u003e Two KIT 30821 valve kits are required to completely service all valve assemblies in a compatible CAT Pumps 310, 340, or 350 series pump.\u003c\/p\u003e\n\u003chr data-start=\"1285\" data-end=\"1288\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1290\" data-end=\"1316\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1318\" data-end=\"1828\"\u003e\n\u003cli data-section-id=\"3g80ip\" data-start=\"1318\" data-end=\"1357\"\u003eGenuine CAT Pumps OEM replacement kit\u003c\/li\u003e\n\u003cli data-section-id=\"1hf3wk5\" data-start=\"1358\" data-end=\"1413\"\u003eDesigned for CAT Pumps 310, 340, and 350 series pumps\u003c\/li\u003e\n\u003cli data-section-id=\"1yb2zd6\" data-start=\"1414\" data-end=\"1455\"\u003eIncludes replacement valves and O-rings\u003c\/li\u003e\n\u003cli data-section-id=\"p7f5e0\" data-start=\"1456\" data-end=\"1509\"\u003eKit contains valve and seal components (2x3 pieces)\u003c\/li\u003e\n\u003cli data-section-id=\"1nc9z11\" data-start=\"1510\" data-end=\"1548\"\u003eHelps restore proper valve operation\u003c\/li\u003e\n\u003cli data-section-id=\"dfja83\" data-start=\"1549\" data-end=\"1588\"\u003eMaintains operating pressure and flow\u003c\/li\u003e\n\u003cli data-section-id=\"127n7n5\" data-start=\"1589\" data-end=\"1633\"\u003eReduces internal leakage and pressure loss\u003c\/li\u003e\n\u003cli data-section-id=\"fwwkb1\" data-start=\"1634\" data-end=\"1671\"\u003eSupports efficient pump performance\u003c\/li\u003e\n\u003cli data-section-id=\"16r8rhd\" data-start=\"1672\" data-end=\"1712\"\u003eOEM-quality materials and construction\u003c\/li\u003e\n\u003cli data-section-id=\"11ske17\" data-start=\"1713\" data-end=\"1767\"\u003eIdeal for preventative maintenance and pump rebuilds\u003c\/li\u003e\n\u003cli data-section-id=\"1d7g3nt\" data-start=\"1768\" data-end=\"1795\"\u003eDirect replacement design\u003c\/li\u003e\n\u003cli data-section-id=\"18a0c0f\" data-start=\"1796\" data-end=\"1828\"\u003eHelps extend pump service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1830\" data-end=\"1833\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1835\" data-end=\"1862\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1864\" data-end=\"1885\"\u003e\u003cstrong data-start=\"1864\" data-end=\"1880\"\u003ePart Number:\u003c\/strong\u003e 7433\u003c\/p\u003e\n\u003cp data-start=\"1887\" data-end=\"1914\"\u003e\u003cstrong data-start=\"1887\" data-end=\"1904\"\u003eManufacturer:\u003c\/strong\u003e CAT Pumps\u003c\/p\u003e\n\u003cp data-start=\"1916\" data-end=\"1952\"\u003e\u003cstrong data-start=\"1916\" data-end=\"1946\"\u003eManufacturer Model Number:\u003c\/strong\u003e 30821\u003c\/p\u003e\n\u003cp data-start=\"1954\" data-end=\"2017\"\u003e\u003cstrong data-start=\"1954\" data-end=\"1978\"\u003eProduct Description:\u003c\/strong\u003e Kit Dolly C1 Valves + O-Rings (2x3 pc)\u003c\/p\u003e\n\u003cp data-start=\"2019\" data-end=\"2054\"\u003e\u003cstrong data-start=\"2019\" data-end=\"2036\"\u003eProduct Type:\u003c\/strong\u003e Valve Service Kit\u003c\/p\u003e\n\u003cp data-start=\"2056\" data-end=\"2102\"\u003e\u003cstrong data-start=\"2056\" data-end=\"2073\"\u003eKit Contents:\u003c\/strong\u003e Valve Components and O-Rings\u003c\/p\u003e\n\u003cp data-start=\"2104\" data-end=\"2127\"\u003e\u003cstrong data-start=\"2104\" data-end=\"2127\"\u003ePump Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2128\" data-end=\"2196\"\u003e\n\u003cli data-section-id=\"ssz3z0\" data-start=\"2128\" data-end=\"2150\"\u003eCAT Pumps 310 Series\u003c\/li\u003e\n\u003cli data-section-id=\"1td2rdl\" data-start=\"2151\" data-end=\"2173\"\u003eCAT Pumps 340 Series\u003c\/li\u003e\n\u003cli data-section-id=\"15qnro8\" data-start=\"2174\" data-end=\"2196\"\u003eCAT Pumps 350 Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2198\" data-end=\"2222\"\u003e\u003cstrong data-start=\"2198\" data-end=\"2218\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003cp data-start=\"2224\" data-end=\"2274\"\u003e\u003cstrong data-start=\"2224\" data-end=\"2240\"\u003eApplication:\u003c\/strong\u003e Pump Valve Maintenance and Repair\u003c\/p\u003e\n\u003cp data-start=\"2276\" data-end=\"2337\"\u003e\u003cstrong data-start=\"2276\" data-end=\"2293\"\u003eService Note:\u003c\/strong\u003e Two Kits Required for Complete Pump Service\u003c\/p\u003e\n\u003chr data-start=\"2339\" data-end=\"2342\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"2344\" data-end=\"2366\"\u003eCommon Applications\u003c\/h2\u003e\n\u003cul data-start=\"2368\" data-end=\"2629\"\u003e\n\u003cli data-section-id=\"1tecz8d\" data-start=\"2368\" data-end=\"2410\"\u003eCAT Pumps 310, 340, and 350 series pumps\u003c\/li\u003e\n\u003cli data-section-id=\"1y56h98\" data-start=\"2411\" data-end=\"2434\"\u003ePressure washer pumps\u003c\/li\u003e\n\u003cli data-section-id=\"1oa2tqu\" data-start=\"2435\" data-end=\"2474\"\u003eCommercial pressure washing equipment\u003c\/li\u003e\n\u003cli data-section-id=\"16ga20s\" data-start=\"2475\" data-end=\"2504\"\u003eIndustrial cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"1navbxu\" data-start=\"2505\" data-end=\"2538\"\u003eAgricultural spraying equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1hb3h7x\" data-start=\"2539\" data-end=\"2562\"\u003eFleet washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"kd18ak\" data-start=\"2563\" data-end=\"2589\"\u003eWater transfer equipment\u003c\/li\u003e\n\u003cli data-section-id=\"wx2rbd\" data-start=\"2590\" data-end=\"2629\"\u003ePump rebuild and maintenance services\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2631\" data-end=\"2634\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"2636\" data-end=\"2659\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"2661\" data-end=\"2961\"\u003e\n\u003cli data-section-id=\"n9plic\" data-start=\"2661\" data-end=\"2694\"\u003eRestores proper valve operation\u003c\/li\u003e\n\u003cli data-section-id=\"1f2yd2j\" data-start=\"2695\" data-end=\"2741\"\u003eHelps maintain consistent operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1g9sr4h\" data-start=\"2742\" data-end=\"2774\"\u003eImproves water flow efficiency\u003c\/li\u003e\n\u003cli data-section-id=\"id47i5\" data-start=\"2775\" data-end=\"2812\"\u003eReduces internal bypass and leakage\u003c\/li\u003e\n\u003cli data-section-id=\"152r7fa\" data-start=\"2813\" data-end=\"2847\"\u003eSupports smooth pump performance\u003c\/li\u003e\n\u003cli data-section-id=\"1f4r8tb\" data-start=\"2848\" data-end=\"2889\"\u003eImproves pump reliability and longevity\u003c\/li\u003e\n\u003cli data-section-id=\"8jrmjj\" data-start=\"2890\" data-end=\"2933\"\u003eMaintains consistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"lmun4u\" data-start=\"2934\" data-end=\"2961\"\u003eExtends pump service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2963\" data-end=\"2966\"\u003e\n\u003ch2 data-section-id=\"1ttojmv\" data-start=\"2968\" data-end=\"3009\"\u003eSigns Pump Valves May Need Replacement\u003c\/h2\u003e\n\u003cp data-start=\"3011\" data-end=\"3054\"\u003eReplace the valve components if you notice:\u003c\/p\u003e\n\u003cul data-start=\"3056\" data-end=\"3286\"\u003e\n\u003cli data-section-id=\"5zjyxm\" data-start=\"3056\" data-end=\"3084\"\u003eLoss of operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"17x0na5\" data-start=\"3085\" data-end=\"3112\"\u003ePulsating pressure output\u003c\/li\u003e\n\u003cli data-section-id=\"1mlu30c\" data-start=\"3113\" data-end=\"3132\"\u003eReduced flow rate\u003c\/li\u003e\n\u003cli data-section-id=\"pmpq9m\" data-start=\"3133\" data-end=\"3157\"\u003eInternal water leakage\u003c\/li\u003e\n\u003cli data-section-id=\"1xk76v\" data-start=\"3158\" data-end=\"3191\"\u003eDifficulty maintaining pressure\u003c\/li\u003e\n\u003cli data-section-id=\"z63v0g\" data-start=\"3192\" data-end=\"3214\"\u003eExcessive valve wear\u003c\/li\u003e\n\u003cli data-section-id=\"1t2zv4u\" data-start=\"3215\" data-end=\"3254\"\u003eDamaged O-rings or sealing components\u003c\/li\u003e\n\u003cli data-section-id=\"1d1scdr\" data-start=\"3255\" data-end=\"3286\"\u003eInconsistent pump performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3288\" data-end=\"3291\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"3293\" data-end=\"3314\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"3316\" data-end=\"3745\"\u003e\n\u003cli data-section-id=\"v1qt1w\" data-start=\"3316\" data-end=\"3381\"\u003eShut down the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"1vuo091\" data-start=\"3382\" data-end=\"3419\"\u003eDisconnect power and water supply.\u003c\/li\u003e\n\u003cli data-section-id=\"cyceas\" data-start=\"3420\" data-end=\"3483\"\u003eRemove valve caps according to CAT Pumps service procedures.\u003c\/li\u003e\n\u003cli data-section-id=\"1w53we4\" data-start=\"3484\" data-end=\"3527\"\u003eRemove worn valve and O-ring components.\u003c\/li\u003e\n\u003cli data-section-id=\"tiz0wt\" data-start=\"3528\" data-end=\"3563\"\u003eClean valve chambers thoroughly.\u003c\/li\u003e\n\u003cli data-section-id=\"1alnjno\" data-start=\"3564\" data-end=\"3613\"\u003eInstall new OEM valve components from the kit.\u003c\/li\u003e\n\u003cli data-section-id=\"cjndz0\" data-start=\"3614\" data-end=\"3678\"\u003eReassemble the pump according to manufacturer specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"1h14qb0\" data-start=\"3679\" data-end=\"3745\"\u003eTest operation and verify proper pressure and flow performance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"3747\" data-end=\"3977\"\u003e\u003cstrong data-start=\"3747\" data-end=\"3761\"\u003eImportant:\u003c\/strong\u003e A complete valve service for compatible CAT Pumps 310, 340, and 350 series pumps requires \u003cstrong data-start=\"3852\" data-end=\"3880\"\u003etwo KIT 30821 valve kits\u003c\/strong\u003e. Always verify service requirements using the CAT Pumps parts breakdown for your specific model.\u003c\/p\u003e\n\u003chr data-start=\"3979\" data-end=\"3982\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"3984\" data-end=\"4014\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4016\" data-end=\"4324\"\u003e\n\u003cli data-section-id=\"lljp6b\" data-start=\"4016\" data-end=\"4065\"\u003eInspect valves during routine pump maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"1xqdbos\" data-start=\"4066\" data-end=\"4109\"\u003eReplace worn valves and O-rings promptly.\u003c\/li\u003e\n\u003cli data-section-id=\"1i58m47\" data-start=\"4110\" data-end=\"4145\"\u003eMaintain proper inlet filtration.\u003c\/li\u003e\n\u003cli data-section-id=\"ih7cye\" data-start=\"4146\" data-end=\"4190\"\u003eUse clean water sources whenever possible.\u003c\/li\u003e\n\u003cli data-section-id=\"1r2x7kj\" data-start=\"4191\" data-end=\"4247\"\u003eFollow manufacturer-recommended maintenance schedules.\u003c\/li\u003e\n\u003cli data-section-id=\"1vv9nrr\" data-start=\"4248\" data-end=\"4324\"\u003eAddress pressure fluctuations immediately to prevent additional pump wear.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CAT Pumps","offers":[{"title":"Default Title","offer_id":53421817069931,"sku":null,"price":82.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/7433DollyKit.webp?v=1782316752","url":"https:\/\/generalsprayers.com\/products\/dolly-kit-for-cat-30821-valves-310-340-350-pumps-need-2-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}