{"title":"Pressure Washer Unloaders","description":"\u003cp\u003eShop pressure washer unloaders and bypass accessories, including General Pump Pulsar and ZK1 flow-sensitive models, VRT unloaders and blue-spring options. Open each listing to compare its flow range, pressure rating, temperature limit and port connections.\u003c\/p\u003e\u003cp\u003eAn unloader must match the pump and the complete system. Thread standards matter: the Pulsar PLSRZ2140 has 1\/2-inch BSP female ports, while other models use different connections. Confirm your exact model and plumbing before ordering.\u003c\/p\u003e\u003cp\u003eBrowse \u003ca href=\"\/collections\/pressure-washers\"\u003ecomplete pressure washers\u003c\/a\u003e, \u003ca href=\"\/collections\/pressure-washer-hoses\"\u003epressure washer hoses\u003c\/a\u003e and \u003ca href=\"\/collections\/pressure-washer-guns\"\u003espray guns\u003c\/a\u003e. Need help identifying a replacement? Contact our \u003ca href=\"\/pages\/pressure-washer-repair-rosenberg\"\u003eRosenberg equipment repair shop\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"general-pump-pulsar-plsrz2140-1-2-flow-sensitive-unloader","title":"General Pump Pulsar PLSRZ2140 1\/2\" Flow-Sensitive Unloader","description":"\u003cp\u003eThe General Pump Pulsar PLSRZ2140 is a blue-spring, flow-sensitive unloader with a brass housing for pressure washing systems. Designed to reduce pressure loss and make spray gun operation easier.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eModel: PLSRZ2140\u003c\/li\u003e\n\u003cli\u003eFlow range: 5.3–21 GPM\u003c\/li\u003e\n\u003cli\u003eOperating pressure: 580–4,050 PSI\u003c\/li\u003e\n\u003cli\u003eMaximum water temperature: 140°F\u003c\/li\u003e\n\u003cli\u003eInlet, outlet and bypass: 1\/2\" BSP female\u003c\/li\u003e\n\u003cli\u003eWeight: 3.8 lb\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse a safety relief device when installing on a positive-displacement pump, as recommended by General Pump. Confirm flow, pressure and thread compatibility before installation.\u003c\/p\u003e\n\u003csection class=\"fb-product-selection\"\u003e\u003ch2\u003eBefore you order\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eAre the ports NPT?\u003c\/summary\u003e\u003cp\u003eNo. This PLSRZ2140 has 1\/2-inch BSP female inlet, outlet and bypass ports. Confirm the thread standard on your plumbing before selecting adapters.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat operating range is listed?\u003c\/summary\u003e\u003cp\u003eThe listed flow range is 5.3–21 GPM, with an operating-pressure range of 580–4,050 PSI and maximum water temperature of 140°F. Follow General Pump's installation guidance.\u003c\/p\u003e\u003c\/details\u003e\u003cp\u003e\u003ca href=\"\/collections\/pressure-washer-unloaders\"\u003eCompare pressure washer unloaders\u003c\/a\u003e · \u003ca href=\"\/pages\/pressure-washer-repair-rosenberg\"\u003eGet help matching a replacement\u003c\/a\u003e\u003c\/p\u003e\u003c\/section\u003e\n\u003cdiv class=\"fb-product-contact\"\u003e\u003cp\u003e\u003cstrong\u003eQuestions about this product or its availability?\u003c\/strong\u003e\u003cbr\u003eCall Fort Bend Wash Supply at \u003ca href=\"tel:+18322405798\"\u003e(832) 240-5798\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e","brand":"General Pump","offers":[{"title":"Default Title","offer_id":46613595914337,"sku":"PLSRZ2140","price":299.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/9898\/1217\/files\/general-pump-pulsar-plsrz2140-unloader.png?v=1791993067"},{"product_id":"zh288-blue-spring-unloader-yub-1-2-npt","title":"ZH288 Blue Spring Unloader YUB — 1\/2\" NPT","description":"\u003cp\u003eBlue-spring ZH288 unloader valve for pressure washing systems, designed for reduced pressure loss and straightforward maintenance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaximum flow: 21 GPM\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 4,500 PSI\u003c\/li\u003e\n\u003cli\u003eDual inlet: 1\/2\" female NPT\u003c\/li\u003e\n\u003cli\u003eDischarge and bypass: 1\/2\" female NPT\u003c\/li\u003e\n\u003cli\u003eContinuous water temperature: up to 140°F\u003c\/li\u003e\n\u003cli\u003eShort-duration maximum water temperature: 195°F\u003c\/li\u003e\n\u003cli\u003eSupplier part number: 6965\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor clean, fresh water. Match the valve to your pump’s flow, pressure and temperature ratings. Install with a safety valve and follow the manufacturer’s installation instructions.\u003c\/p\u003e\n\u003cdiv class=\"fb-product-contact\"\u003e\u003cp\u003e\u003cstrong\u003eQuestions about this product or its availability?\u003c\/strong\u003e\u003cbr\u003eCall Fort Bend Wash Supply at \u003ca href=\"tel:+18322405798\"\u003e(832) 240-5798\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":46613639659617,"sku":"6965","price":154.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/9898\/1217\/files\/zh288-blue-spring-unloader.jpg?v=1791993065"},{"product_id":"general-pump-zk1-flow-sensitive-unloader-3600-psi","title":"General Pump ZK1 Flow-Sensitive Unloader — 3600 PSI","description":"\u003cp\u003eGeneral Pump ZK1 flow-sensitive unloader for pressure washing systems.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFlow range: 2.3–10.8 GPM\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 3,600 PSI\u003c\/li\u003e\n\u003cli\u003eInlet: 3\/8\" female BSP\u003c\/li\u003e\n\u003cli\u003eOutlet and bypass: 1\/2\" male BSP\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 165°F\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCheck system compatibility and thread type before installation.\u003c\/p\u003e\n\u003cdiv class=\"fb-product-contact\"\u003e\u003cp\u003e\u003cstrong\u003eQuestions about this product or its availability?\u003c\/strong\u003e\u003cbr\u003eCall Fort Bend Wash Supply at \u003ca href=\"tel:+18322405798\"\u003e(832) 240-5798\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e","brand":"General Pump","offers":[{"title":"Default Title","offer_id":49108862500961,"sku":"ZK1","price":137.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/9898\/1217\/files\/general-pump-zk1-unloader.jpg?v=1791993064"},{"product_id":"vrt100-green-spring-unloader-1-2-fpt","title":"VRT100 Green Spring Unloader — 1\/2\" FPT","description":"\u003cp\u003eVRT100 green spring unloader with 1\/2\" female pipe connections.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaximum flow: 26.4 GPM\u003c\/li\u003e\n\u003cli\u003eMaximum temperature: 194°F\u003c\/li\u003e\n\u003cli\u003eInlet, outlet and bypass: 1\/2\" FPT\u003c\/li\u003e\n\u003cli\u003eSupplier part number: 11152\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eConfirm compatibility with your pressure washer before installation.\u003c\/p\u003e\n\u003cdiv class=\"fb-product-contact\"\u003e\u003cp\u003e\u003cstrong\u003eQuestions about this product or its availability?\u003c\/strong\u003e\u003cbr\u003eCall Fort Bend Wash Supply at \u003ca href=\"tel:+18322405798\"\u003e(832) 240-5798\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":49108868366433,"sku":"11152","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/9898\/1217\/files\/vrt100-green-spring-unloader.png?v=1792002005"},{"product_id":"1-2-3-way-aluminum-unloader-bypass-block","title":"1\/2\" 3-Way Aluminum Unloader\/Bypass Block","description":"\u003cp\u003eThree-way aluminum unloader\/bypass block with three 1\/2-inch NPT ports. Machined from a 3 x 3-inch block with two 1\/4-inch mounting holes.\u003c\/p\u003e\n\u003cdiv class=\"fb-product-contact\"\u003e\u003cp\u003e\u003cstrong\u003eQuestions about this product or its availability?\u003c\/strong\u003e\u003cbr\u003eCall Fort Bend Wash Supply at \u003ca href=\"tel:+18322405798\"\u003e(832) 240-5798\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":49175007658081,"sku":"1\/2_3wayblock-CM","price":39.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/9898\/1217\/files\/1-2-3-way-aluminum-unloader-bypass-block-clear.jpg?v=1791857775"},{"product_id":"3-8-3-way-aluminum-unloader-bypass-block","title":"3\/8\" 3-Way Aluminum Unloader\/Bypass Block","description":"\u003cp\u003eThree-way aluminum unloader\/bypass block with three 3\/8-inch NPT ports. Machined from a 3 x 3-inch block with two 1\/4-inch mounting holes.\u003c\/p\u003e\n\u003cdiv class=\"fb-product-contact\"\u003e\u003cp\u003e\u003cstrong\u003eQuestions about this product or its availability?\u003c\/strong\u003e\u003cbr\u003eCall Fort Bend Wash Supply at \u003ca href=\"tel:+18322405798\"\u003e(832) 240-5798\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":49175015293025,"sku":"3\/8_3wayblock-CM","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/9898\/1217\/files\/3-8-3-way-aluminum-unloader-bypass-block.jpg?v=1790952405"},{"product_id":"vrt3-310ez-black-spring-unloader-4-500-psi","title":"VRT3-310EZ Black Spring Unloader — 4,500 PSI","description":"\u003cp\u003eThe VRT3-310EZ is a pressure-actuated black spring unloader with a built-in easy-start valve for pressure washing systems.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eModel: VRT3-310EZ\u003c\/li\u003e\n\u003cli\u003ePart number: 4072000002\u003c\/li\u003e\n\u003cli\u003eMaximum pressure: 4,500 PSI\u003c\/li\u003e\n\u003cli\u003eBlack spring\u003c\/li\u003e\n\u003cli\u003eBuilt-in easy-start valve\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eConfirm compatibility with your pressure washer before installation.\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":49336432230497,"sku":"VRT3-310EZ","price":64.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/9898\/1217\/files\/vrt3-310ez-unloader-1.jpg?v=1792201940"}],"url":"https:\/\/fortbendwashsupply.com\/collections\/pressure-washer-unloaders.oembed","provider":"Fort Bend Wash Supply","version":"1.0","type":"link"}