{"product_id":"dosatron-dm11f-check-valve-spring","title":"Dosatron® DM11F Check Valve Spring","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\u003cp\u003eA failing check valve in your fertigation system can bring an entire operation to a standstill. When the spring loses its tension or corrodes, you face backflow issues, inconsistent nutrient dosing, and potential damage to your primary injector unit. During peak growing seasons or mid-summer heat, even a single day of downtime leads to visible crop stress or turf yellowing that takes weeks to reverse. Supply chain disruptions regularly affect small internal components like these, often leading to long lead times for simple replacement kits. Securing these essential components now ensures your crews can perform on-site repairs immediately, keeping your clients’ systems operational and your project deadlines intact.\u003c\/p\u003e\u003cp\u003eThe Dosatron DM11F Check Valve Spring is engineered specifically to maintain the precise opening and closing pressure required for accurate chemical injection. Unlike generic stainless springs that may lack the exact tension rating, this OEM component ensures the seal seats perfectly every time the piston cycles. This precision prevents chemical siphoning when the system is off and protects the main water line from contamination. By stocking these high-wear parts, you reduce the labor costs associated with multiple site visits and give your business a reputation for reliable, proactive maintenance that lower-tier contractors cannot match.\u003c\/p\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-Grade Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eDosatron DM11F Series Injectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Type\u003c\/td\u003e\n\u003ctd\u003eCheck Valve Internal Spring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Rating\u003c\/td\u003e\n\u003ctd\u003eMatches OEM Injector Specifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrosion Resistance\u003c\/td\u003e\n\u003ctd\u003eResistant to standard fertilizers and acids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\/Finish\u003c\/td\u003e\n\u003ctd\u003eNatural Metallic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eAvailable Models \u0026amp; Sizes\u003c\/h3\u003e\u003cp\u003eThis specific spring is designed for the DM11F series of Dosatron injectors. While this is a standard replacement part for that series, we offer a full range of O-rings, seals, and check valve assemblies for other Dosatron models. Contact our technical team for a full list of regional pricing for bulk maintenance kits or specialized configurations.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHeavy-duty stainless steel construction provides long-term resistance to harsh fertilizer concentrates.\u003c\/li\u003e\n\u003cli\u003eCalibrated tension ensures the check valve opens and closes at exact manufacturer-specified pressure intervals.\u003c\/li\u003e\n\u003cli\u003eSimple drop-in design allows your crews to perform field repairs in minutes without specialized shop tools.\u003c\/li\u003e\n\u003cli\u003eOEM manufacturing ensures 100 percent compatibility with existing DM11F injector bodies.\u003c\/li\u003e\n\u003cli\u003eSmooth finish prevents grit accumulation and minimizes the risk of the spring binding during high-cycle operation.\u003c\/li\u003e\n\u003cli\u003eCost-effective preventative maintenance component that prevents expensive damage to the main motor piston.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFoliar and root-zone fertigation for greenhouse and nursery operations.\u003c\/li\u003e\n\u003cli\u003eNutrient delivery for commercial landscape irrigation systems.\u003c\/li\u003e\n\u003cli\u003eChemical injection for sports turf and golf course maintenance.\u003c\/li\u003e\n\u003cli\u003ePrecise dosing for agricultural and crop irrigation setups.\u003c\/li\u003e\n\u003cli\u003eAcid or sanitizer injection in municipal parks and public spaces.\u003c\/li\u003e\n\u003cli\u003eFertigation management for residential lawn and garden systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eBefore installation, ensure the water supply is shut off and the system pressure is fully relieved to prevent injury. Unscrew the check valve nut at the bottom of the injection stem and carefully remove the old spring and cone. Clean any debris or chemical crystallization from the check valve seat before inserting the new DM11F spring. Hand-tighten all components according to Dosatron torque specifications to avoid cracking the plastic threads, ensuring a leak-proof seal for high-pressure operation.\u003c\/p\u003e","brand":"Dosatron","offers":[{"title":"Default Title","offer_id":52158389879073,"sku":"120777","price":8.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/8458\/3969\/files\/120777_PR.png?v=1766260229","url":"https:\/\/asiwsupply.com\/products\/dosatron-dm11f-check-valve-spring","provider":"ASIW","version":"1.0","type":"link"}