{"title":"Flow Sensitive Unloaders","description":"\u003ch2\u003eFlow Sensitive Unloaders for Pressure Washers\u003c\/h2\u003e\n\u003cp\u003eMaintain consistent pressure and protect your pump with professional flow sensitive unloaders designed for variable flow applications. Flow sensitive unloaders automatically adjust to changing flow conditions, making them ideal for multi-gun setups, surface cleaners, and applications where flow rates vary during operation.\u003c\/p\u003e\n\u003ch3\u003eComplete Flow Sensitive Unloader Solutions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral Pump K7 Series:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIndustry-standard K7 flow sensitive unloaders for 2-10 GPM pressure washers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulsar Unloaders:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFlow sensitive Pulsar unloaders for reliable pressure regulation in variable flow applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGPM Ratings:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUnloaders sized for 2-4 GPM, 4-7 GPM, and 7-10 GPM pressure washer configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Ranges:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFlow sensitive unloaders rated for 3,000 to 5,000+ PSI applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebuild Kits:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eComplete rebuild kits with seals, springs, and components for unloader maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're running multiple spray guns simultaneously, operating surface cleaners that vary flow demand, or need consistent pressure regulation across changing conditions, flow sensitive unloaders automatically compensate for flow variations. Unlike trapped pressure unloaders that require full flow to function properly, flow sensitive designs maintain stable pressure even when flow rates change, preventing pressure spikes and protecting your equipment.\u003c\/p\u003e\n\u003cp\u003eLooking for trapped pressure unloaders? Browse our\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/admin.shopify.com\/collections\/trapped-pressure-unloaders\" title=\"Trapped Pressure Unloaders\"\u003etrapped pressure unloaders\u003c\/a\u003e. Need other pump components? Check out our\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/admin.shopify.com\/collections\/pumps\" title=\"Pumps\"\u003epressure washer pumps\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/admin.shopify.com\/collections\/all-products\" title=\"All Products\"\u003ecomplete product catalog\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"k7-1-unloader-3-0-4-2-gpm-3500psi","title":"K7.1 UNLOADER 3.0-4.2 GPM 3500PSI","description":"\u003cp\u003eThe unloader valve diverts water flow into bypass when the trigger gun valve is closed. Flow actuated unloaders divert water to the bypass when there is a sufficient reduction or stoppage of water flow. The flow actuated unloader has an orifice instead of a check valve in pressure actuate unloaders. when the gun valve is closed and water flow stops, system pressure is increased rapidly al all points past the orifice.A small channel in front of the orifice allows the increased pressure to travel up to the piston assembly, pushing it down. The rest of the water flow is diverted through the bypass and back to the float tank or pump inlet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul\u003e \u003cli\u003eFeatures all stainless and brass internal parts\u003c\/li\u003e \u003cli\u003eDesign reduces sensitivity to entrapped air\u003c\/li\u003e \u003cli\u003eNo external moving parts or springs\u003c\/li\u003e \u003cli\u003eEliminates high pressure in all lines while unit is in bypass mode\u003c\/li\u003e \u003cli\u003eBypass restrictor eliminates pressure peaks during bypass\u003c\/li\u003e \u003cli\u003eUnique balanced piston design permits precise pressure adjustments\u003c\/li\u003e \u003cli\u003eSimple design for easy maintenance and service\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul\u003e \u003cli\u003eMaximum Volume: 2.9 to 4.2 GPM\u003c\/li\u003e \u003cli\u003eDischarge Pressure: 0 to 3000 PSI\u003c\/li\u003e \u003cli\u003eMaximum Temperature: 165 F\u003c\/li\u003e \u003cli\u003eInlet Port: 3\/8\" FPT\u003c\/li\u003e \u003cli\u003eOutlet Port: 3\/8\" MPT\u003c\/li\u003e \u003cli\u003eBypass Port: 3\/8\" FPT\u003c\/li\u003e \u003cli\u003eDimensions: 7.50\" x 3.75\" x 3.50\"\u003c\/li\u003e \u003cli\u003eWeight: 4.5 lb\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":52188362309929,"sku":"190079 K7-1","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_d365fe6e-6765-4bac-9b7f-04f92d43dd53.jpg?v=1714668678"},{"product_id":"k7-2-unloader-4-2-6-6-gpm-3500psi","title":"K7.2 Unloader 4.2-6.6 GPM 3500PSI","description":"\u003cp\u003e\u003cstrong\u003eK7.2 Unloader 4.2-6.6 GPM 3500PSI\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe unloader valve diverts water flow into bypass when the trigger gun valve is closed. Flow actuated unloaders divert water to the bypass when there is a sufficient reduction or stoppage of water flow.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe flow actuated unloader has an orifice instead of a check valve in pressure actuate unloaders. when the gun valve is closed and water flow stops, system pressure is increased rapidly al all points past the orifice.A small channel in front of the orifice allows the increased pressure to travel up to the piston assembly, pushing it down. The rest of the water flow is diverted through the bypass and back to the float tank or pump inlet.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\t\u003cli\u003eFeatures all stainless and brass internal parts\u003c\/li\u003e\t\u003cli\u003eDesign reduces sensitivity to entrapped air\u003c\/li\u003e\t\u003cli\u003eNo external moving parts or springs\u003c\/li\u003e\t\u003cli\u003eEliminates high pressure in all lines while unit is in bypass mode\u003c\/li\u003e\t\u003cli\u003eBypass restrictor eliminates pressure peaks during bypass\u003c\/li\u003e\t\u003cli\u003eUnique balanced piston design permits precise pressure adjustments\u003c\/li\u003e\t\u003cli\u003eSimple design for easy maintenance and service\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cul\u003e\t\u003cli\u003eMaximum Volume: 4.2 to 6.6 GPM\u003c\/li\u003e\t\u003cli\u003eDischarge Pressure: 0 to 3000 PSI\u003c\/li\u003e\t\u003cli\u003eMaximum Temperature: 165 F\u003c\/li\u003e\t\u003cli\u003eInlet Port: 3\/8\" FPT\u003c\/li\u003e\t\u003cli\u003eOutlet Port: 3\/8\" MPT\u003c\/li\u003e\t\u003cli\u003eBypass Port: 3\/8\" FPT\u003c\/li\u003e\t\u003cli\u003eDimensions: 7.50\" x 3.75\" x 3.50\"\u003c\/li\u003e\t\u003cli\u003eWeight: 4.5 lb\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":52188362342697,"sku":"190009 K7-2","price":145.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_6d6b98b7-82c2-4e53-b4dd-97a32e0a261c.jpg?v=1714669035"},{"product_id":"k7-3-unloader-6-6-10-8-gpm-3500psi","title":"K7.3 Unloader 6.6-10.8Gpm 3500Psi","description":"\u003cp\u003eThe unloader valve diverts water flow into bypass when the trigger gun valve is closed.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eFlow actuated unloaders divert water to the bypass when there is a sufficient reduction or stoppage of water flow. The flow actuated unloader has an orifice instead of a check valve in pressure actuate unloaders. When the gun valve is closed and water flow stops, system pressure is increased rapidly at all points past the orifice.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eA small channel in front of the orifice allows the increased pressure to travel up to the piston assembly, pushing it down. The rest of the water flow is diverted through the bypass and back to the float tank or pump inlet.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFEATURES:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\t\u003cli\u003eFeatures all stainless and brass internal parts\u003c\/li\u003e\t\u003cli\u003eDesign reduces sensitivity to entrapped air\u003c\/li\u003e\t\u003cli\u003eNo external moving parts or springs\u003c\/li\u003e\t\u003cli\u003eEliminates high pressure in all lines while unit is in bypass mode\u003c\/li\u003e\t\u003cli\u003eBypass restrictor eliminates pressure peaks during bypass\u003c\/li\u003e\t\u003cli\u003eUnique balanced piston design permits precise pressure adjustments\u003c\/li\u003e\t\u003cli\u003eSimple design for easy maintenance and service\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\t\u003cli\u003eMaximum Volume: 6.6 to 10.8 GPM\u003c\/li\u003e\t\u003cli\u003eDischarge Pressure: 0 to 3000 PSI\u003c\/li\u003e\t\u003cli\u003eMaximum Temperature: 165 F\u003c\/li\u003e\t\u003cli\u003eInlet Port: 3\/8\" FPT\u003c\/li\u003e\t\u003cli\u003eOutlet Port:3\/8\" MPT\u003c\/li\u003e\t\u003cli\u003eBypass Port: 3\/8 FPT\u003c\/li\u003e\t\u003cli\u003eDimensions: 7.50\" x 3.75\" x 3.50\"\u003c\/li\u003e\t\u003cli\u003eWeight: 4.5 lb.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":52188362473769,"sku":"190361 K7-3","price":145.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_a83bf9e6-5ba1-4ca4-b785-504e9edd0325.jpg?v=1714669130"},{"product_id":"general-pump-zk1-flow-sensitive-unloader-2-10gpm-3600psi-max","title":"General Pump ZK1 Flow Sensitive Unloader 2-10GPM 3600PSI Max","description":"\u003cp\u003eZK1 Unloader by General Pump\u003c\/p\u003e\n\u003cp\u003eFlow Sensitive Unloader 2-10 GPM 3600psi max.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eGPM\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e2.3 to 10.8\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax PSI\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e3600\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInlet\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e3\/8\" BSP-F\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutlet\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e1\/2\" BSP-M\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBypass\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e1\/2\" BSP-M\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e165° F\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShip Weight\u003c\/th\u003e\n\u003ctd\u003e\n\u003cp\u003e2.3 lbs.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":52188362080553,"sku":"ZK1","price":122.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_7d5795e2-f8e0-492e-9b29-caef9765c4ab.jpg?v=1714669558"},{"product_id":"pulsar-plsrz2140-1-2in-flow-sensative-unloader-gp","title":"Pulsar PLSRZ2140 1\/2in Flow Sensitive Unloader General Pump","description":"\u003cp\u003ePulsar PLSRZ2140 1\/2in Flow Sensitive Unloader GP\u003c\/p\u003e\n\u003cp\u003ePA General Pump 1\/2in Blue Spring Pulsar Flow Sensitive Unloader\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBrass Housing Unloader Valve\u003c\/p\u003e\n\u003cp\u003eThe General Pump PLSRZ2140 Unloader Valve is a helpful accessory that makes spray gun operation easier and safer. It boasts reduced pressure loss over other unloader valves while being extremely reliable and easy to maintain.\u003c\/p\u003e\n\u003cp\u003eGeneral Pump recommends using a safety relief device in conjunction with this unloader valve when installed on a positive displacement pump. General Pump is not liable and assumes no responsibility when used in a customer's high pressure system.\u003c\/p\u003e\n\u003cp\u003eDimensions: 9 .35\" x 4 .42\" x 2\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum Volume: 5.3 to 21 GPM\u003c\/li\u003e\n\u003cli\u003eMaximum Pressure: 4050 PSI\u003c\/li\u003e\n\u003cli\u003eMinimum Pressure: 580 PSI\u003c\/li\u003e\n\u003cli\u003eMaximum Temperature: 140° Fahrenheit\u003c\/li\u003e\n\u003cli\u003eInlet Port: 1\/2\" BSP-F\u003c\/li\u003e\n\u003cli\u003eOutlet Port: 1\/2\" BSP-F\u003c\/li\u003e\n\u003cli\u003eBypass: 1\/2\" BSP-F\u003c\/li\u003e\n\u003cli\u003eWeight: 3.8 lbs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMax PSI: 4050\u003c\/p\u003e\n\u003cp\u003eMax GPM: 21Min\u003c\/p\u003e\n\u003cp\u003ePSI: 580\u003c\/p\u003e\n\u003cp\u003eInlet Port: 1\/2 inch\u003c\/p\u003e\n\u003cp\u003eOutlet Port: 1\/2 inch\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNear total zero setting of the outlet pressure at gun closure increases safety\u003c\/li\u003e\n\u003cli\u003eReduced pressure loss\u003c\/li\u003e\n\u003cli\u003eMakes for easier gun operation\u003c\/li\u003e\n\u003cli\u003eExtremely reliable\u003c\/li\u003e\n\u003cli\u003eEasy maintenance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":52188363227433,"sku":"PLSRZ2140","price":275.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_8cecefae-7048-46e5-be34-6fb2355a27ac.png?v=1714669629"},{"product_id":"k7-orifice-1-2-only","title":"K7 Orifice #1-2 ONLY","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413153067305,"sku":"3779","price":17.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/Image-Coming-Soon-Placeholder.png?v=1779391941"},{"product_id":"plsrz2140-rebuild-kit-y60281424","title":"PLSRZ2140 Rebuild kit Y60281424","description":"\u003cp\u003eGeneral Pump PLSRZ2140 Unloader Rebuild kit Y60281424\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":51206475972905,"sku":"Y60281424","price":124.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/IMAGE-EDIT_2ea35d69-4dfd-4451-a775-36da054d9bd5.png?v=1757938827"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/collections\/file_8cecefae-7048-46e5-be34-6fb2355a27ac.png?v=1769704579","url":"https:\/\/mpwsr.com\/collections\/flow-sensitive-unloaders.oembed","provider":"MPWSR","version":"1.0","type":"link"}