{"product_id":"model-2151-pressure-switch-110-145-psi-1-4-npt","title":"Model 2151: Sealed Tank Mount Pressure Switch - 1\/4\" NPT (110 psi On \/ 145 psi Off)","description":"\u003cstyle\u003e\n    .kleinn-container h3 {\n        font-size: 18px;\n        font-weight: bold;\n        margin-top: 0;\n        margin-bottom: 10px;\n    }\n    .kleinn-container .box-title {\n        color: #C00000;\n        font-size: 18px;\n        font-weight: bold;\n        margin-top: 0;\n        margin-bottom: 10px;\n        text-transform: uppercase;\n    }\n    .kleinn-container .subtitle {\n        font-size: 14px;\n        font-weight: bold;\n        margin-top: 20px;\n        margin-bottom: 5px;\n        text-transform: uppercase;\n    }\n    .kleinn-container p, \n    .kleinn-container li, \n    .kleinn-container td,\n    .kleinn-container span {\n        font-size: 12px;\n        line-height: 1.5;\n    }\n    .kleinn-container .verdict-highlight {\n        font-style: italic;\n    }\n    \/* Fluid curved card container matching your fluid listing standard *\/\n    .kleinn-container .curved-card {\n        background-color: #f4f4f4; \n        border-left: 10px solid #C00000; \n        padding: 25px; \n        margin-bottom: 25px; \n        border-radius: 8px;\n    }\n    \/* Black 1px grid border formatting matching your standard spec charts *\/\n    .kleinn-container .specs-table {\n        width: 100%;\n        border-collapse: collapse;\n        border: 1px solid #000000;\n        margin-bottom: 20px;\n    }\n    .kleinn-container .specs-table td {\n        border: 1px solid #000000;\n        padding: 8px 12px;\n    }\n\u003c\/style\u003e\n\u003cdiv class=\"kleinn-container\"\u003e\n\u003ch3\u003eModel 2151: Sealed Tank Mount Pressure Switch - 1\/4\" NPT (110–145 PSI)\u003c\/h3\u003e\n\u003cp class=\"subtitle\"\u003eAUTOMATED PRECISION\u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eKleinn Model 2151\u003c\/b\u003e is the heavy-duty \u003cstrong\u003e\"brain\" of your air management.\u003c\/strong\u003e It takes absolute control,\u003cstrong\u003e automatically signaling your compressor\u003c\/strong\u003e to kick \u003cstrong\u003eON\u003c\/strong\u003e when levels drop and \u003cstrong\u003eOFF\u003c\/strong\u003e before exceeding safe limits. Engineered specifically for \u003cb\u003eKleinn 150 PSI\u003c\/b\u003e + \u003cb\u003eSystems\u003c\/b\u003e, it features a\u003cstrong\u003e fully sealed housing\u003c\/strong\u003e and \u003cstrong\u003eheavy-duty 12-gauge wires\u003c\/strong\u003e to thrive in the most extreme environments.\u003c\/p\u003e\n\u003cp class=\"subtitle\"\u003eCRITICAL SAFETY ARCHITECTURE\u003c\/p\u003e\n\u003cp\u003eNever compromise your rig. For maximum performance and total system protection, the \u003cb\u003e2151\u003c\/b\u003e \u003cb\u003eMUST\u003c\/b\u003e be paired with a \u003cstrong\u003e40-amp relay\u003c\/strong\u003e (\u003ca href=\"https:\/\/kleinn.com\/products\/sealed-40-amp-5-post-spdt-relay-12-volt?variant=44387298443426\" title=\"40 amp max 12-volt relay\" style=\"color: #c00000; font-weight: bold; text-decoration: underline;\" target=\"_blank\"\u003eModel 340\u003c\/a\u003e) and a \u003cstrong\u003esafety relief valve\u003c\/strong\u003e (\u003ca href=\"https:\/\/kleinn.com\/products\/model-52175-safety-valve-1-4-m-npt-175-psi-pop-off?variant=44387282419874\" title=\"52175 safety valve\" style=\"color: #c00000; font-weight: bold; text-decoration: underline;\" target=\"_blank\"\u003eModel 52175\u003c\/a\u003e).\u003c\/p\u003e\n\u003cp class=\"subtitle\"\u003eFAILSAFE DESIGN\u003c\/p\u003e\n\u003cp\u003eThis essential combination maintains strict pressure limits. If the switch eventually wears, the \u003cstrong\u003esafety relief valve acts as your early warning system\u003c\/strong\u003e—\u003cb\u003eModel 52175.\u003c\/b\u003e If you hear the safety valve releasing \u003cstrong\u003erepeated, high-pressure blasts of air\u003c\/strong\u003e, it is a definitive signal that your \u003cstrong\u003epressure switch has failed\u003c\/strong\u003e to cut power to the compressor. This alert tells you to \u003cstrong\u003eimmediately disconnect power to the compressor\u003c\/strong\u003e and \u003cstrong\u003ereplace the pressure switch\u003c\/strong\u003e before system damage occurs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kleinn-container\"\u003e\n\u003cdiv class=\"curved-card\"\u003e\n\u003ch3 class=\"box-title\"\u003e\u003cstrong\u003eWHY CHOOSE THE MODEL 2151?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px; margin: 10px 0;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cb\u003ePRECISION-TUNED CALIBRATION:\u003c\/b\u003e Engineered to kick in at 110 PSI and cut out at 145 PSI. This ensures your tank is always primed for massive air horn blasts, tools, or suspension—zero lag, zero guesswork.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cb\u003eBATTLE-READY SEALED DESIGN:\u003c\/b\u003e The fully sealed housing slams the door on moisture, dust, and road debris, making it the only choice for rugged under-vehicle mounting.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cb\u003eERROR-PROOF WIRING:\u003c\/b\u003e With non-polarized leads, there is no \"wrong\" way to wire it—meaning faster installs and zero risk of wiring-induced failures.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cb\u003eTOTAL SYSTEM FORTIFICATION:\u003c\/b\u003e Designed to command a 12V ignition signal to a 40-amp relay, shielding your compressor from electrical burnout and maximizing its lifespan.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"verdict-highlight\" style=\"margin-top: 15px; color: #c00000; font-weight: bold;\"\u003e\u003cstrong\u003eAUTOMATIC PROTECTION CONTROL!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"verdict-highlight\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(192, 0, 0);\"\u003eTHE VERDICT: \u003c\/span\u003e\u003c\/strong\u003eBuilt to serve as the critical automatic checkpoint for your automated system setup, the Model 2151 seals out environmental moisture variables while keeping your tank volume safe and constantly pressurized.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kleinn-container\"\u003e\n\u003cdiv class=\"curved-card\"\u003e\n\u003ch3 class=\"box-title\"\u003e\u003cstrong\u003eWHAT'S IN THE BOX?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px; margin: 10px 0;\"\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cb\u003e(1) Model 2151:\u003c\/b\u003e Sealed Tank-Mount Pressure Switch\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cb\u003e(2) Wire Leads:\u003c\/b\u003e Heavy-Duty 12-Gauge Non-Polarized Wire Leads\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cb\u003e(1) Connection Thread:\u003c\/b\u003e 1\/4\" NPT Male Fitting (Pre-applied Thread Sealant)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kleinn-container\"\u003e\n\u003cdiv class=\"curved-card\"\u003e\n\u003ch3 class=\"box-title\"\u003e\u003cstrong\u003e⚠️ MODEL 2151 COMPATIBILITY\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 10px;\"\u003eThis \u003cstrong\u003epressure switch\u003c\/strong\u003e is specifically designed for use with \u003cstrong\u003eKleinn 150 PSI systems.\u003c\/strong\u003e To ensure the \u003cstrong\u003eperfect fit\u003c\/strong\u003e for \u003cstrong\u003eyour application\u003c\/strong\u003e, match the \u003cstrong\u003epressure switch\u003c\/strong\u003e to the \u003cstrong\u003e150 PSI + Rating of your compressor.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #ddd; margin: 15px 0;\"\u003e\n\u003cp class=\"subtitle\"\u003eKleinn Air Systems compatible with the 2151:\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px; margin-bottom: 15px;\"\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cb\u003eModel 6275:\u003c\/b\u003e 150 PSI | 50% Duty Cycle | \u003cb\u003eMedium-Duty\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cb\u003eModel 6350:\u003c\/b\u003e 150 PSI | 100% Duty Cycle | \u003cb\u003eHeavy-Duty Onboard Air System\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cb\u003eModel 6450 \u0026amp; 6450-Slim:\u003c\/b\u003e 200 PSI | 100% Duty Cycle | \u003cb\u003eUltra Heavy-Duty Onboard Air System\u003c\/b\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #ddd; margin: 15px 0;\"\u003e\n\u003cp class=\"subtitle\"\u003eKleinn Systems compatible with the 2151:\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px; margin: 10px 0;\"\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cb\u003eUniversal ProBlaster™ Horn Kits:\u003c\/b\u003e Models \u003cb\u003eHKUTV\u003c\/b\u003e and \u003cb\u003eHK5 through HK9-Slimline\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cb\u003eVehicle-Specific Kits:\u003c\/b\u003e \u003cb\u003eRNGR-102-1\u003c\/b\u003e, Any \u003cb\u003ePart Number\u003c\/b\u003e ending in \u003cb\u003e-220\u003c\/b\u003e, \u003cb\u003e-230\u003c\/b\u003e, \u003cb\u003e-734\u003c\/b\u003e, or \u003cb\u003e-OBA\u003c\/b\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kleinn-container\"\u003e\n\u003cdiv class=\"curved-card\"\u003e\n\u003ch3 class=\"box-title\"\u003e\u003cstrong\u003e⚠️ Pro Installation Tip: Relay Protection\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSHIELD YOUR INVESTMENT.\u003c\/strong\u003e For maximum reliability and long-term performance, power this switch via an \u003cstrong\u003eignition source\u003c\/strong\u003e of 10+ amps. This \u003cstrong\u003eMUST\u003c\/strong\u003e be used in conjunction with a \u003cstrong\u003e30\/40 amp relay\u003c\/strong\u003e (like the \u003cb\u003eKleinn Model 340\u003c\/b\u003e) to shield internal contacts from high-amperage surges during compressor startup. Proper isolation ensures consistent switching and hammers down on premature wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"curved-card\"\u003e\n\u003ch3 class=\"box-title\"\u003e\u003cstrong\u003e⚠️ Critical Maintenance Tip: Fight Corrosion\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDON'T LET MOISTURE KILL YOUR SYSTEM.\u003c\/strong\u003e Pressure switches are high-performance wear items. To maximize longevity, use the \u003cstrong\u003eKleinn Snorkel Air Filter Relocation Kit included with all of our air compressors.\u003c\/strong\u003e By \u003cstrong\u003erouting your air intake inside the vehicle cab\u003c\/strong\u003e, you significantly reduce moisture intake, stop internal tank corrosion dead, and effectively \u003cstrong\u003edouble the service life\u003c\/strong\u003e of your \u003cstrong\u003epressure switch.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kleinn-container\"\u003e\n\u003cp class=\"subtitle\"\u003ePRESSURE SWITCH \u0026amp; SAFETY VALVE CONFIGURATIONS\u003c\/p\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #000000; color: #ffffff;\"\u003e\n\u003cth style=\"border: 1px solid #000000; padding: 8px; text-align: left; font-size: 13px; font-weight: bold; text-transform: uppercase;\"\u003eCompressor Model\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000000; padding: 8px; text-align: left; font-size: 13px; font-weight: bold; text-transform: uppercase;\"\u003ePressure Switch\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000000; padding: 8px; text-align: left; font-size: 13px; font-weight: bold; text-transform: uppercase;\"\u003eCut-Out Pressure\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000000; padding: 8px; text-align: left; font-size: 13px; font-weight: bold; text-transform: uppercase;\"\u003eSafety Valve\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003e6270RC\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e2121\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e120 PSI\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e52145\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003e6270RC\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e2131\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e130 PSI\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e52155\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003e6275RC\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e2151\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e150 PSI\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e52175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003e6350RC\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e2151\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e150 PSI\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e52175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003e6450RC\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e2151\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e150 PSI\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e52175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003e6650RC\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e2165\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e200 PSI\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e52250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kleinn-container\"\u003e\n\u003cp class=\"subtitle\"\u003ePRESSURE SWITCH SPECIFICATIONS\u003c\/p\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background: black; padding: 8px 10px;\"\u003e\n\u003cp style=\"color: white; text-transform: uppercase; font-weight: bold; letter-spacing: 0.5pt; margin: 0; font-size: 13px;\"\u003e2151 Pressure Switch Details\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"40%\" style=\"background: #D1D1D1;\"\u003e\u003cb\u003ePart Number\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"60%\" style=\"background: #D1D1D1;\"\u003e\u003cb\u003eModel 2151\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003e1-Year\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003ePressure On \/ Off\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003e110 PSI On \/ 145 PSI Off\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003eWiring\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003eTwo 12-Gauge non-polarized leads\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003eSafety Valve Compatibility\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003eUse Model 52175\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003eTank Fitting Size\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003e¼” M NPT\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003eProtection\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: #cfcfcf;\"\u003e\u003cb\u003eSealed Design for Moisture Resistance\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003eCompatible Relay\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"background: white;\"\u003e\u003cb\u003eModel 340 40-amp SPDT 12v Auto Relay\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"kleinn-container\"\u003e\n\u003cp class=\"subtitle\"\u003eINSTALLATION INSTRUCTION LINKS:\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 6px; margin-top: 10px;\"\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/kleinnretail.s3.amazonaws.com\/pdfs\/KL+Waterproof-Compressor-Manual_RevB.pdf\" title=\"Air Compressor Install instructions\" style=\"font-weight: bold; color: #2b00ff; text-decoration: none;\" target=\"_blank\"\u003e📋 Compressor Overview \u0026amp; Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/kleinnretail.s3.amazonaws.com\/pdfs\/How-To-Wire-A-Compressor.pdf\" title=\"How to Wire a Compressor\" style=\"font-weight: bold; color: #2b00ff; text-decoration: none;\" target=\"_blank\"\u003e🔍 Air Compressor Wiring Diagram\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Kleinn","offers":[{"title":"Default Title","offer_id":44387295756450,"sku":"KL 2151","price":32.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3719\/3890\/files\/model-2151-pressure-switch-kleinn-kl-2151-881387.jpg?v=1724978120","url":"https:\/\/kleinn.com\/products\/model-2151-pressure-switch-110-145-psi-1-4-npt","provider":"Kleinn Automotive Accessories","version":"1.0","type":"link"}