{"product_id":"stenner-injector-pump-45mhp22","title":"Stenner Classic Series Adjustable Injector Pump - 45MHP22","description":"\u003cp data-start=\"184\" data-end=\"568\"\u003eBuilt on over 50 years of proven performance, the Stenner Classic Series Adjustable Metering Pump delivers precise, reliable chemical injection for a wide range of water treatment and industrial applications. Designed with durability and flexibility in mind, this peristaltic pump ensures consistent output, simple maintenance, and dependable operation—even in demanding environments.\u003c\/p\u003e\n\u003cp data-start=\"570\" data-end=\"597\"\u003e\u003cstrong data-start=\"570\" data-end=\"597\"\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"598\" data-end=\"1066\"\u003e\n\u003cli data-section-id=\"1mv1m36\" data-start=\"598\" data-end=\"670\"\u003eSelf-priming against maximum working pressure—no foot valve required\u003c\/li\u003e\n\u003cli data-section-id=\"1izm22d\" data-start=\"671\" data-end=\"740\"\u003eRuns dry without damage and resists clogging from dirt and debris\u003c\/li\u003e\n\u003cli data-section-id=\"1d4ab2q\" data-start=\"741\" data-end=\"793\"\u003ePumps off-gassing solutions without losing prime\u003c\/li\u003e\n\u003cli data-section-id=\"1uekwth\" data-start=\"794\" data-end=\"838\"\u003eConsistent, repeatable output within ±2%\u003c\/li\u003e\n\u003cli data-section-id=\"1ox9xkf\" data-start=\"839\" data-end=\"898\"\u003eAdjustable feed rate from 5% to 100% in 2.5% increments\u003c\/li\u003e\n\u003cli data-section-id=\"ga9r0p\" data-start=\"899\" data-end=\"954\"\u003eTool-free assembly for easy maintenance and service\u003c\/li\u003e\n\u003cli data-section-id=\"198nahx\" data-start=\"955\" data-end=\"1011\"\u003eUniversal pump head compatible across Stenner models\u003c\/li\u003e\n\u003cli data-section-id=\"3wfwsq\" data-start=\"1012\" data-end=\"1066\"\u003eCompatible with a wide range of chemical solutions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1068\" data-end=\"1194\"\u003e\u003cstrong data-start=\"1068\" data-end=\"1098\"\u003eEngineered for Versatility\u003c\/strong\u003e\u003cbr data-start=\"1098\" data-end=\"1101\"\u003eIdeal for both water treatment and industrial use, this adjustable pump is commonly used for:\u003c\/p\u003e\n\u003cul data-start=\"1195\" data-end=\"1346\"\u003e\n\u003cli data-section-id=\"qmrsb7\" data-start=\"1195\" data-end=\"1224\"\u003epH control and adjustment\u003c\/li\u003e\n\u003cli data-section-id=\"1c7rlke\" data-start=\"1225\" data-end=\"1279\"\u003eOxidation of iron, hydrogen sulfide, and manganese\u003c\/li\u003e\n\u003cli data-section-id=\"zzcel6\" data-start=\"1280\" data-end=\"1311\"\u003eDisinfection and sanitation\u003c\/li\u003e\n\u003cli data-section-id=\"1s4rkn9\" data-start=\"1312\" data-end=\"1346\"\u003eCorrosion and scale prevention\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1348\" data-end=\"1535\"\u003eIt’s widely used across water conditioning, agriculture, industrial processing, wastewater treatment, cooling towers, irrigation systems, metal finishing, and commercial pool maintenance.\u003c\/p\u003e\n\u003cp data-start=\"1537\" data-end=\"1857\"\u003e\u003cstrong data-start=\"1537\" data-end=\"1553\"\u003eHow It Works\u003c\/strong\u003e\u003cbr data-start=\"1553\" data-end=\"1556\"\u003eAll Stenner metering pumps feature a 3-point roller design within the pump head that acts as a built-in check valve, preventing backflow, siphoning, overdosing, and loss of prime. As the motor shaft rotates at a fixed RPM, it drives the adjustable feed rate control, which engages the roller assembly.\u003c\/p\u003e\n\u003cp data-start=\"1859\" data-end=\"2119\"\u003eThe rollers compress the flexible pump tube, capturing and moving the chemical solution forward. As the tube returns to its original shape, it creates a vacuum—allowing the pump to self-prime and deliver a steady, consistent flow regardless of outlet pressure.\u003c\/p\u003e\n\u003cp data-start=\"2121\" data-end=\"2194\"\u003e\u003cstrong data-start=\"2121\" data-end=\"2139\"\u003eOutput Control\u003c\/strong\u003e\u003cbr data-start=\"2139\" data-end=\"2142\"\u003ePump performance is determined by three key factors:\u003c\/p\u003e\n\u003cul data-start=\"2195\" data-end=\"2267\"\u003e\n\u003cli data-section-id=\"3mpdfu\" data-start=\"2195\" data-end=\"2216\"\u003eMotor speed (RPM)\u003c\/li\u003e\n\u003cli data-section-id=\"ix8sbs\" data-start=\"2217\" data-end=\"2248\"\u003eFeed rate setting (5%–100%)\u003c\/li\u003e\n\u003cli data-section-id=\"x57vdf\" data-start=\"2249\" data-end=\"2267\"\u003ePump tube size\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2269\" data-end=\"2427\"\u003eThe pump is constructed with three detachable components—motor, feed rate control, and pump head—making it easy to service or adapt to different applications.\u003c\/p\u003e\n\u003cp data-start=\"2429\" data-end=\"2746\"\u003e\u003cstrong data-start=\"2429\" data-end=\"2460\"\u003eWhat is a Peristaltic Pump?\u003c\/strong\u003e\u003cbr data-start=\"2460\" data-end=\"2463\"\u003eA peristaltic (tube) pump uses a rotating roller assembly to compress a flexible tube, creating a vacuum that draws and moves fluid through the system. This design allows for self-priming operation and isolates the chemical within the tubing for cleaner, low-maintenance performance.\u003c\/p\u003e\n\u003cp data-start=\"2748\" data-end=\"2766\"\u003e\u003cstrong data-start=\"2748\" data-end=\"2766\"\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2767\" data-end=\"2908\"\u003e\n\u003cli data-section-id=\"lyx3jp\" data-start=\"2767\" data-end=\"2784\"\u003eVoltage: 120V\u003c\/li\u003e\n\u003cli data-section-id=\"1175bg9\" data-start=\"2785\" data-end=\"2802\"\u003eOutput: 60 Hz\u003c\/li\u003e\n\u003cli data-section-id=\"1kcqbdl\" data-start=\"2803\" data-end=\"2844\"\u003eDimensions: 10.6\" L x 5.3\" W x 6.0\" H\u003c\/li\u003e\n\u003cli data-section-id=\"9l3g6c\" data-start=\"2845\" data-end=\"2871\"\u003eShipping Weight: 9 lbs\u003c\/li\u003e\n\u003cli data-section-id=\"1rzkd3r\" data-start=\"2872\" data-end=\"2908\"\u003eMax Operating Temperature: 125°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2910\" data-end=\"2929\"\u003e\u003cstrong data-start=\"2910\" data-end=\"2929\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2930\" data-end=\"3156\"\u003e\n\u003cli data-section-id=\"1aovewg\" data-start=\"2930\" data-end=\"2958\"\u003e(3) 1\/4\" Connecting Nuts\u003c\/li\u003e\n\u003cli data-section-id=\"zfgr81\" data-start=\"2959\" data-end=\"2980\"\u003e(2) 3\/8\" Ferrules\u003c\/li\u003e\n\u003cli data-section-id=\"1pxfy7l\" data-start=\"2981\" data-end=\"3006\"\u003eInjection Check Valve\u003c\/li\u003e\n\u003cli data-section-id=\"oedje5\" data-start=\"3007\" data-end=\"3028\"\u003eWeighted Strainer\u003c\/li\u003e\n\u003cli data-section-id=\"13fye18\" data-start=\"3029\" data-end=\"3091\"\u003e20' Roll of 1\/4\" White Stanoprene Suction\/Discharge Tubing\u003c\/li\u003e\n\u003cli data-section-id=\"ebnw1v\" data-start=\"3092\" data-end=\"3111\"\u003eSpare Pump Tube\u003c\/li\u003e\n\u003cli data-section-id=\"h4w17x\" data-start=\"3112\" data-end=\"3132\"\u003eMounting Bracket\u003c\/li\u003e\n\u003cli data-section-id=\"12i8ssu\" data-start=\"3133\" data-end=\"3156\"\u003eInstallation Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3158\" data-end=\"3209\"\u003e\u003cstrong data-start=\"3158\" data-end=\"3207\"\u003eOptional Accessories (Available Upon Request)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3210\" data-end=\"3304\"\u003e\n\u003cli data-section-id=\"16f1r9o\" data-start=\"3210\" data-end=\"3234\"\u003e3\/8\" Connecting Nuts\u003c\/li\u003e\n\u003cli data-section-id=\"m1ucsn\" data-start=\"3235\" data-end=\"3259\"\u003e1\/4\" UV Black Tubing\u003c\/li\u003e\n\u003cli data-section-id=\"1em7w8\" data-start=\"3260\" data-end=\"3304\"\u003e3\/8\" White Stanoprene or UV Black Tubing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Stenner Pumps","offers":[{"title":"Default Title","offer_id":53192309047603,"sku":"122502","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/6179\/8963\/files\/122500_2_detail.jpg?v=1775071575","url":"https:\/\/www.qcsupply.com\/products\/stenner-injector-pump-45mhp22","provider":"QC Supply","version":"1.0","type":"link"}