About This

【Broad Compatibility & Application】This 1/2" 9D-M3 brass backflow preventer is a direct replacement for Watts 190T012 and other major brands. Engineered for smaller supply lines, it is ideal for boiler feed water lines, laboratory equipment, processing tanks, sterilizers, and dairy systems to reliably prevent backflow and ensure system pressure integrity.
【Robust & Long-Lasting Construction】Built with a heavy-duty brass body, stainless steel internal components, and a durable rubber disc, this dual check valve offers superior corrosion resistance. The precision-machined dual-check mechanism ensures leak-free performance, delivering a service life up to 3 times longer than standard valves under frequent pressure surges.
【Certified Reliable Performance】Guarantees stable performance in both hot and cold water (33°F to 210°F) under continuous pressure. Rated for a maximum working pressure of 175 PSI with a minimum requirement of 25 PSI. It is rigorously tested to withstand over 5000 pressure cycles, ensuring fail-safe operation in extreme temperature and pressure environments.
【Error-Proof & Flexible Installation】Features cast-in 'INLET' & 'VENT' labels with permanent raised brass lettering for lifetime legibility, preventing installation errors. Offers flexible vertical or horizontal installation. A critical safety note: A drain pipe must be installed (terminating 12" above floor drain), and the vent port must never be blocked to prevent scalding risks.
【Risk-Free Purchase & Support】Your satisfaction is our priority. We provide responsive customer support. If you encounter any issues with your 9D-M3 backflow preventer, contact us for assistance per Amazon's policies, ensuring a smooth and reliable purchase experience.