{"title":"Flow Switches","description":"\u003cp\u003eAutomate burner operation and protect your hot water pressure washer with professional flow switches designed for reliable flow detection. Flow switches automatically activate burners when water flows through the system and shut them off when flow stops, preventing dry firing and ensuring safe, efficient hot water operation.\u003c\/p\u003e\n\u003ch3\u003eComplete Flow Switch Solutions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurner Flow Switches:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFlow-activated switches that control burner ignition based on water flow detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Sizes:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFlow switches in 1\/4\", 3\/8\", and 1\/2\" NPT configurations for various plumbing setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rate Activation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSwitches calibrated to activate at specific GPM thresholds for reliable operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Ratings:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSwitches rated for 12V and 110V burner control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Parts:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eReplacement flow switch components and rebuild kits for maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're installing a new burner system, replacing a faulty flow switch, or upgrading your hot water pressure washer controls, flow switches provide essential safety and automation. The flow-sensing design ensures burners only operate when water is flowing through the coil, preventing dangerous dry firing that can damage heating coils and create safety hazards in hot water pressure washing operations.\u003c\/p\u003e\n\u003cp\u003eLooking for burner components? Browse our\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"Burner Replacement Parts\" href=\"https:\/\/admin.shopify.com\/collections\/burner-replacement-parts\"\u003eburner replacement parts\u003c\/a\u003e. Need other electrical components? Check out our\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"Electrical Parts\" href=\"https:\/\/admin.shopify.com\/collections\/electrical\"\u003eelectrical parts \u0026amp; accessories\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"All Products\" href=\"https:\/\/admin.shopify.com\/collections\/all-products\"\u003ecomplete product catalog\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"st-7-flow-switch","title":"ST-7 Flow Switch","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413111288105,"sku":"ST-7","price":67.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/Image-Coming-Soon-Placeholder.png?v=1779391941"},{"product_id":"st-6-mount-any-direction-flow-switch","title":"ST-6 Mount any Direction FLow Switch","description":"\u003cp\u003e\u003cspan\u003eMounts in any position and spring assisted brass magnet configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413111681321,"sku":"200006703","price":54.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/ST-6FlowSwitch.jpg?v=1721829698"},{"product_id":"replacement-switch-for-big-pressure-switch","title":"Replacement Switch for \"Big\" pressure switch","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413122396457,"sku":"41.0095","price":5.3,"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":"mtm-hydro-3-8-pressure-switch-360psi","title":"MTM Hydro 3\/8 pressure switch 360PSI","description":"\u003cp\u003eMTM Hydro's Italian Pressure Switches are used in a variety of methods to turn other items in a pressure washing system on or off. Typically, this switch is used for burner control and is activated by a pressure threshold within the unloader where the switch is mounted. As you disengage your gun by releasing the trigger the pressure suddenly spikes within the switch. This increase in pressure will turn the burner off so that you are not constantly heating the pressurized coils with hot water pressure washers. Once the trigger is re-engaged, the pressure drops and the switch will turn the burner back on. A few other items switches may operate would include supply pumps, electric pressure washer motors, electronically controlled chemical injection systems. This 'Big' Pressure Switch has approximately 1\" x 3\" x 1\" dimensions with ratings of 250 V -15 A.\u003c\/p\u003e\n\u003cp\u003eBe sure to review the specification requirements before purchasing any type of switch as O-ring colors indicate activation PSI specific to your machine. The 'Wet' portion of the switch measures a fraction of an inch and therefore requires a lower PSI for activation as you will notice below.\u003c\/p\u003e\n\u003cp\u003eO-Ring Colors indicate the following: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYellow = 115 Activation PSI\u003c\/li\u003e\n\u003cli\u003eBlue = 210 Activation PSI\u003c\/li\u003e\n\u003cli\u003eRed = 360 Activation PSI\u003c\/li\u003e\n\u003cli\u003eBlack = 580 Activation PSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eYou can install this switch in the 'Normally Closed' or 'Normally Open' position depending upon assembly instructions on your pressure washer by connecting two of the three leads (see image).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRed = Normally Closed\u003c\/li\u003e\n\u003cli\u003eBrown = Normally Open\u003c\/li\u003e\n\u003cli\u003eBlue = Common\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413146874153,"sku":"21.0012","price":40.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/21.0012.webp?v=1721240559"},{"product_id":"flow-switch-pilot-assist","title":"Flow Switch, Pilot Assist","description":"\u003cp\u003e\u003cspan\u003e micro-switch technology eliminates the need for a reed switch. Mounts in your tank in a vertical position, the switch activates with just .5 gpm flow. Minimal pressure drop up to 12 gpm flow. If you use a downstream chemical injector, it should be mounted on the output side of the flow switch.\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum Operating Pressure: 4000 PSI\u003c\/li\u003e\n\u003cli\u003eMinimum Flow Required for Activation: 0.5 GPM @ 50 PSI\u003c\/li\u003e\n\u003cli\u003eMaximum Operating Flow: 12.0 GPM\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Range: 40 - 180 °F\u003c\/li\u003e\n\u003cli\u003eElectrical Lead Length: 48\" - 18AWG\u003c\/li\u003e\n\u003cli\u003eMax Switching Voltage: 250 VAC\u003c\/li\u003e\n\u003cli\u003eMax Switching Current: 5 AMPS\u003c\/li\u003e\n\u003cli\u003eResistance with Leads: 30 OHM\u003c\/li\u003e\n\u003cli\u003eElectrical Service Life: 200,000 Cycles\u003c\/li\u003e\n\u003cli\u003eMechanical Service Life: 10,000,000 Cycles\u003c\/li\u003e\n\u003cli\u003eInlet: 3\/8\" x 18 NPT-F\u003c\/li\u003e\n\u003cli\u003eOutlet: 3\/8\" x 18 NPT-F\u003c\/li\u003e\n\u003cli\u003ePilot: 1\/4\" Hose Barb\u003c\/li\u003e\n\u003cli\u003eDimensions: 4.1\" x 1.6\" x 1.0\"\u003c\/li\u003e\n\u003cli\u003eWeight: 1.3 LBS\u003c\/li\u003e\n\u003cli\u003eMaterials: Buna-N, Brass, Plastic, Nickel Plated Neodymium\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413180756265,"sku":"100879","price":193.82,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/9582.avif?v=1751574885"},{"product_id":"product_fce17b35-b13f-40ab-ac48-67e8acd7ed8e","title":"100975","description":"\u003cp\u003e100975 GP FLOW SWITCH STRAIGHT 12GPM\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48581927141673,"sku":"100975","price":58.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/100975.jpg?v=1718907910"},{"product_id":"st-5-flow-switch-high-flow","title":"ST-5 Flow Switch (high flow)","description":"\u003ctable width=\"100%\" border=\"0\" class=\"product_info_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart #\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200005711\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 PSI min-3046 PSI max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e176° F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 GPM min-16 GPM max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/2\" FPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/2\" FPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.98 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eAny Position Mount\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eMounts in any position with a free floating magnet configuration\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cpre class=\"prod-features\"\u003e• Mounts further downstream in pumping system than traditional vacuum switches, thereby minimizing potential leak points that can cause vacuum switches to close.\n• Easy brass reed switch replacement.\n• 47\" wire\n• High Flow\u003c\/pre\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":50412581159209,"sku":"200005711","price":106.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/200005711.jpg?v=1748307993"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/collections\/21.0012.webp?v=1770047120","url":"https:\/\/mpwsr.com\/collections\/flow-switches.oembed","provider":"MPWSR","version":"1.0","type":"link"}