{"product_id":"gp-yub21405-flow-sensitive-unloader","title":"Blue Spring Pressure Washer Unloader Valve","description":"\u003ch1 data-start=\"203\" data-end=\"275\"\u003eZH288 Blue Spring Pressure Washer Unloader Valve – 1\/2\" NPT, 4500 PSI\u003c\/h1\u003e\n\u003cp data-start=\"277\" data-end=\"644\"\u003eUpgrade your pressure washer system with the \u003cstrong data-start=\"322\" data-end=\"358\"\u003eZH288 Blue Spring Unloader Valve\u003c\/strong\u003e, engineered for \u003cstrong data-start=\"375\" data-end=\"422\"\u003ehigh-performance, reliable pressure control\u003c\/strong\u003e. Designed for professional and industrial use, this valve \u003cstrong data-start=\"481\" data-end=\"556\"\u003ereduces pressure loss, protects your pump, and ensures smooth operation\u003c\/strong\u003e. Easy to install and maintain, it’s ideal for hot or cold water systems up to 4500 PSI.\u003c\/p\u003e\n\u003ch3 data-start=\"651\" data-end=\"667\"\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"670\" data-end=\"745\"\u003e\n\u003cstrong data-start=\"670\" data-end=\"706\"\u003eTrapped-pressure unloader design\u003c\/strong\u003e for fast, stable pressure regulation\u003c\/li\u003e\n\u003cli data-start=\"748\" data-end=\"805\"\u003e\n\u003cstrong data-start=\"748\" data-end=\"773\"\u003eReduced pressure loss\u003c\/strong\u003e for maximum system efficiency\u003c\/li\u003e\n\u003cli data-start=\"808\" data-end=\"865\"\u003e\n\u003cstrong data-start=\"808\" data-end=\"830\"\u003eExtremely reliable\u003c\/strong\u003e for continuous-duty applications\u003c\/li\u003e\n\u003cli data-start=\"868\" data-end=\"905\"\u003e\u003cstrong data-start=\"868\" data-end=\"903\"\u003eEasy maintenance and adjustment\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"908\" data-end=\"975\"\u003e\n\u003cstrong data-start=\"908\" data-end=\"926\"\u003eProtects pumps\u003c\/strong\u003e by diverting flow when the spray gun is closed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1497\" data-end=\"1513\"\u003eHow It Works:\u003c\/h3\u003e\n\u003cp data-start=\"1514\" data-end=\"1579\"\u003eThe ZH288 regulates system pressure by controlling bypass flow.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1582\" data-end=\"1631\"\u003e\n\u003cstrong data-start=\"1582\" data-end=\"1595\"\u003eGun open:\u003c\/strong\u003e Valve maintains working pressure.\u003c\/li\u003e\n\u003cli data-start=\"1634\" data-end=\"1727\"\u003e\n\u003cstrong data-start=\"1634\" data-end=\"1649\"\u003eGun closed:\u003c\/strong\u003e Water is diverted through the bypass at low pressure, reducing pump stress.\u003c\/li\u003e\n\u003cli data-start=\"1730\" data-end=\"1852\"\u003e\n\u003cstrong data-start=\"1730\" data-end=\"1758\"\u003eZero-pressure mechanism:\u003c\/strong\u003e Keeps delivery and bypass lines connected during shutdown, lowering system pressure evenly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1859\" data-end=\"1886\"\u003eInstallation Guidelines:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1889\" data-end=\"1951\"\u003eInstall \u003cstrong data-start=\"1897\" data-end=\"1928\"\u003eupstream of any heat source\u003c\/strong\u003e in hot water systems\u003c\/li\u003e\n\u003cli data-start=\"1954\" data-end=\"1992\"\u003eAlways use a \u003cstrong data-start=\"1967\" data-end=\"1990\"\u003esafety relief valve\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1995\" data-end=\"2073\"\u003eChoose a nozzle that allows \u003cstrong data-start=\"2023\" data-end=\"2050\"\u003eat least 5% bypass flow\u003c\/strong\u003e for stable operation\u003c\/li\u003e\n\u003cli data-start=\"2076\" data-end=\"2192\"\u003eBypass water can be returned to the pump intake or to a tank with \u003cstrong data-start=\"2142\" data-end=\"2153\"\u003ebaffles\u003c\/strong\u003e to reduce turbulence and air bubbles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2199\" data-end=\"2227\"\u003ePressure Adjustment Tips:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"2230\" data-end=\"2283\"\u003eAdjust \u003cstrong data-start=\"2237\" data-end=\"2281\"\u003ewith system running and trigger gun open\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2286\" data-end=\"2338\"\u003eTurn adjustment knob to increase\/decrease pressure\u003c\/li\u003e\n\u003cli data-start=\"2341\" data-end=\"2404\"\u003eIf pressure does not rise, check \u003cstrong data-start=\"2374\" data-end=\"2402\"\u003enozzle size vs flow rate\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2407\" data-end=\"2466\"\u003eReplace worn nozzles to restore proper operating pressure\u003c\/li\u003e\n\u003cli data-start=\"2469\" data-end=\"2568\"\u003e🚫 \u003cstrong data-start=\"2472\" data-end=\"2515\"\u003eDo not remove the mechanical safety nut\u003c\/strong\u003e—it limits maximum pressure and protects the system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"982\" data-end=\"1000\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"1001\" data-end=\"1490\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1001\" data-end=\"1022\"\u003e\n\u003ctr data-start=\"1001\" data-end=\"1022\"\u003e\n\u003cth data-start=\"1001\" data-end=\"1011\" data-col-size=\"sm\"\u003eFeature\u003c\/th\u003e\n\u003cth data-start=\"1011\" data-end=\"1022\" data-col-size=\"md\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1045\" data-end=\"1490\"\u003e\n\u003ctr data-start=\"1045\" data-end=\"1070\"\u003e\n\u003ctd data-start=\"1045\" data-end=\"1060\" data-col-size=\"sm\"\u003eMaximum Flow\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1060\" data-end=\"1070\"\u003e21 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1071\" data-end=\"1102\"\u003e\n\u003ctd data-start=\"1071\" data-end=\"1090\" data-col-size=\"sm\"\u003eMaximum Pressure\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1090\" data-end=\"1102\"\u003e4500 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1103\" data-end=\"1175\"\u003e\n\u003ctd data-start=\"1103\" data-end=\"1125\" data-col-size=\"sm\"\u003eMaximum Temperature\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1125\" data-end=\"1175\"\u003e195°F (continuous use recommended up to 140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1176\" data-end=\"1213\"\u003e\n\u003ctd data-start=\"1176\" data-end=\"1196\" data-col-size=\"sm\"\u003eInlet Connections\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1196\" data-end=\"1213\"\u003eDual 1\/2\" FPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1214\" data-end=\"1249\"\u003e\n\u003ctd data-start=\"1214\" data-end=\"1237\" data-col-size=\"sm\"\u003eDischarge Connection\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1237\" data-end=\"1249\"\u003e1\/2\" FPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1250\" data-end=\"1282\"\u003e\n\u003ctd data-start=\"1250\" data-end=\"1270\" data-col-size=\"sm\"\u003eBypass Connection\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1270\" data-end=\"1282\"\u003e1\/2\" FPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1283\" data-end=\"1313\"\u003e\n\u003ctd data-start=\"1283\" data-end=\"1301\" data-col-size=\"sm\"\u003eConnection Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1301\" data-end=\"1313\"\u003e1\/2\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1314\" data-end=\"1344\"\u003e\n\u003ctd data-start=\"1314\" data-end=\"1322\" data-col-size=\"sm\"\u003eMedia\u003c\/td\u003e\n\u003ctd data-start=\"1322\" data-end=\"1344\" data-col-size=\"md\"\u003eClean, fresh water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1345\" data-end=\"1404\"\u003e\n\u003ctd data-start=\"1345\" data-end=\"1359\" data-col-size=\"sm\"\u003eApplication\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1359\" data-end=\"1404\"\u003eHot or cold water pressure washer systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1405\" data-end=\"1490\"\u003e\n\u003ctd data-start=\"1405\" data-end=\"1427\" data-col-size=\"sm\"\u003ePressure Adjustment\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1427\" data-end=\"1490\"\u003eScrew-type adjustment knob, adjustable while system running\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 data-start=\"2575\" data-end=\"2588\"\u003e\u003c\/h3\u003e\n\u003ch3 data-start=\"2575\" data-end=\"2588\"\u003eIdeal For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"2591\" data-end=\"2635\"\u003eCommercial and industrial pressure washers\u003c\/li\u003e\n\u003cli data-start=\"2638\" data-end=\"2675\"\u003eHigh-flow pump systems up to 21 GPM\u003c\/li\u003e\n\u003cli data-start=\"2678\" data-end=\"2716\"\u003eHot or cold water cleaning equipment\u003c\/li\u003e\n\u003cli data-start=\"2719\" data-end=\"2769\"\u003eProfessional cleaning and maintenance operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Manatee Pressure Washer Supply and Repair","offers":[{"title":"Default Title","offer_id":48445568876757,"sku":"6965","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/1881\/6981\/files\/blue-spring-pressure-washer-unloader-valve-5402080.png?v=1784989027","url":"https:\/\/expertpowerwash.com\/products\/gp-yub21405-flow-sensitive-unloader","provider":"Expert Power Wash","version":"1.0","type":"link"}