{"product_id":"flojet-2100-series-pump-50-psi-switch-kit-xylem","title":"Flojet 2100 Series Pump 50 PSI Switch Kit | Xylem","description":"\u003cp class=\"nvn-hero\"\u003eFlojet's 2100 Series pump acting up? This Xylem replacement kit sets it right. You get a 50 PSI pressure switch, two bypass poppets, two springs, and wire leads, everything that wears out on a duplex diaphragm fresh water pump. It's the common fix for a pump that short-cycles, chatters, or won't shut off, and a lot cheaper than a whole new unit.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eIf your Flojet 2100 Series pump has started running when nobody's at the tap, or it won't shut off after the faucets close, the pressure switch is usually the part that's gone. This kit from Xylem puts that pump right. It's the replacement pressure switch for the 2100 Series duplex diaphragm fresh water pump, set to cut out at 50 PSI, and it comes with everything you need to finish the job in one sitting.\u003c\/p\u003e\n\u003cp\u003eHere's what's in the box. A new 50 PSI pressure switch, two bypass poppets, two springs, and a set of wire leads. That covers the parts of the pump that actually wear out over time, so you're not chasing a second failure a month later. The 2100 Series is a duplex pump, meaning it has two pumping chambers working together, which is why there are two poppets and two springs instead of one. Replacing them as a set keeps both sides matched and your water pressure steady at the tap.\u003c\/p\u003e\n\u003cp\u003eThe pressure switch is the brain of an on-demand water system. When you open a faucet, pressure in the line drops and the switch tells the pump to run. Close the faucet, pressure climbs, and at 50 PSI the switch shuts the pump off and holds it there until you need water again. When that switch wears out, you get the classic symptoms. The pump short-cycles, clicking on and off every few seconds. Or it chatters at the tap. Or it just runs and runs and never shuts down, which wears the motor and drains your battery overnight. A fresh switch set to the correct 50 PSI brings that behavior back to normal.\u003c\/p\u003e\n\u003cp\u003eNot sure the switch is the culprit? Here's a quick way to tell. Spin the pump up, open a tap to get flow, then close it. A healthy pump builds pressure and clicks off within a second or two. If it keeps buzzing, hunts up and down, or shuts off and then kicks right back on, the switch has lost its calibration and needs replacing. If instead the pump sounds rough, loses prime, or weeps from the body, that's a different problem and a switch kit won't cover it. Most of the time, though, a 2100 that won't settle down is a switch and bypass issue, which is exactly what this kit is built to address.\u003c\/p\u003e\n\u003cp\u003eThe bypass poppets and springs do the quieter work. They manage internal flow so the pump ramps smoothly instead of pulsing, and they're a big part of why a healthy 2100 feels steady at the faucet and a tired one feels jumpy. The poppets and their springs stiffen and lose their seal with age, so swapping them while you've got the pump apart is just good sense.\u003c\/p\u003e\n\u003cp\u003eInstallation is a straightforward bench-level repair. The wire leads are included so you can splice cleanly into your existing pump wiring instead of hunting for connectors. If you can run a screwdriver and make a couple of wire connections, you can do this. We'd suggest cutting power and relieving system pressure first, the usual drill before you open up any pressurized water component.\u003c\/p\u003e\n\u003cp\u003eWho's this for? RV owners and boaters running a Flojet 2100 Series pump in a fresh water system that's starting to act up. If your pump is otherwise mechanically sound, the motor spins and the diaphragm holds but the behavior's gone wrong, this kit is almost always the fix, and a lot cheaper than a whole new pump. Just confirm your system runs at a 50 PSI shut-off before you order, since that's the set point this switch is built around.\u003c\/p\u003e\n\u003cp\u003eOne honest note. This is a repair and rebuild kit, not a complete pump. It restores a working 2100 Series that's developed a switch or bypass problem. If your pump's motor is dead or the housing is cracked, you'll want a full replacement pump instead. But for the most common failure, the one where a good pump just stops behaving, this is exactly the part you're after.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e50 PSI pressure switch: shuts the pump off at the correct set point so it stops cycling and holds pressure\u003c\/li\u003e\n  \u003cli\u003eFits the Flojet 2100 Series duplex diaphragm fresh water pump: a direct replacement for the parts that wear\u003c\/li\u003e\n  \u003cli\u003eTwo bypass poppets and two springs: a matched set for both chambers of the duplex pump, for steady pressure\u003c\/li\u003e\n  \u003cli\u003eWire leads included: splice cleanly into existing pump wiring with no hunting for connectors\u003c\/li\u003e\n  \u003cli\u003eComplete switch and bypass rebuild: addresses the most common 2100 Series failure in one kit\u003c\/li\u003e\n  \u003cli\u003eGenuine Xylem replacement part, MPN 02091050\u003c\/li\u003e\n  \u003cli\u003eBench-level repair: basic hand tools and a couple of wire connections get it done\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Xylem reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich pump does this kit fit?\u003c\/summary\u003e\n    \u003cp\u003eIt's made for the Flojet 2100 Series duplex diaphragm fresh water pump. If that's the pump in your RV or boat, this is the matching switch and bypass kit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's included in the kit?\u003c\/summary\u003e\n    \u003cp\u003eA 50 PSI pressure switch, two bypass poppets, two springs, and a set of wire leads. That covers the parts that typically wear out on the 2100 Series.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAt what pressure does the switch shut the pump off?\u003c\/summary\u003e\n    \u003cp\u003eThis switch is set for 50 PSI. When line pressure reaches 50 PSI with the taps closed, it shuts the pump off and holds it there until you open a faucet.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eMy pump won't shut off. Will this fix it?\u003c\/summary\u003e\n    \u003cp\u003eThat's the classic sign of a worn pressure switch, and this kit is the usual fix. As long as the motor and diaphragm are still sound, replacing the switch and bypass parts almost always restores normal shut-off.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy are there two poppets and two springs?\u003c\/summary\u003e\n    \u003cp\u003eThe 2100 Series is a duplex pump with two pumping chambers. Each chamber has its own bypass poppet and spring, so the kit includes a matched pair to keep both sides even.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it come with wire leads?\u003c\/summary\u003e\n    \u003cp\u003eYes. Wire leads are included so you can splice into your existing pump wiring during the install.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a complete pump?\u003c\/summary\u003e\n    \u003cp\u003eNo. It's a repair and rebuild kit for a 2100 Series pump that's developed a switch or bypass problem. If the motor or housing has failed, you'll want a full replacement pump instead.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need to replace both poppets and springs?\u003c\/summary\u003e\n    \u003cp\u003eWe'd replace them as a set. They wear at a similar rate, and matching both sides of a duplex pump keeps your water pressure steady and quiet at the tap.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a genuine Flojet part?\u003c\/summary\u003e\n    \u003cp\u003eYes. It's a Xylem replacement part, MPN 02091050. Flojet is a Xylem brand, so it's built to the original pump's specs.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eReplacement for Flojet 2100 Series Duplex Diaphragm Fresh Water Pump, 50 PSI Switch Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eXylem\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e02091050\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e705474900831\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePressure Switch Setting\u003c\/th\u003e\n\u003ctd\u003e50 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFits Pump\u003c\/th\u003e\n\u003ctd\u003eFlojet 2100 Series Duplex Diaphragm Fresh Water Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePump Type\u003c\/th\u003e\n\u003ctd\u003eDuplex Diaphragm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eKit Includes\u003c\/th\u003e\n\u003ctd\u003e50 PSI Switch, Two Bypass Poppets, Two Springs, Wire Leads\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePressure Switch\u003c\/th\u003e\n\u003ctd\u003e1 (Included)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBypass Poppets\u003c\/th\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSprings\u003c\/th\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Leads\u003c\/th\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eFresh Water System\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003ePump Pressure Switch and Bypass Repair Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which pump does this kit fit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's made for the Flojet 2100 Series duplex diaphragm fresh water pump. If that's the pump in your RV or boat, this is the matching switch and bypass kit.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's included in the kit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A 50 PSI pressure switch, two bypass poppets, two springs, and a set of wire leads. That covers the parts that typically wear out on the 2100 Series.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"At what pressure does the switch shut the pump off?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"This switch is set for 50 PSI. When line pressure reaches 50 PSI with the taps closed, it shuts the pump off and holds it there until you open a faucet.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"My pump won't shut off. Will this fix it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"That's the classic sign of a worn pressure switch, and this kit is the usual fix. As long as the motor and diaphragm are still sound, replacing the switch and bypass parts almost always restores normal shut-off.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why are there two poppets and two springs?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The 2100 Series is a duplex pump with two pumping chambers. Each chamber has its own bypass poppet and spring, so the kit includes a matched pair to keep both sides even.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it come with wire leads?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Wire leads are included so you can splice into your existing pump wiring during the install.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a complete pump?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. It's a repair and rebuild kit for a 2100 Series pump that's developed a switch or bypass problem. 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