Resideo BP900 Backflow Preventer

The Resideo BP900 is an industrial-grade 1/2 inch double check backflow preventer engineered specifically for high-demand hydronic systems and small supply lines. This critical component utilizes an integrated intermediate vacuum breaker to provide redundant protection against both backflow and back-siphonage, ensuring contaminated water never enters the potable supply. Constructed with a heavy-duty bronze body and stainless steel internal components, the Resideo BP900/U is built for professional-tier reliability in continuous pressure environments. Rated for a maximum operating pressure of 175 psi and fluid temperatures up to 250°F, it is the standard choice for boiler feed lines, laboratory equipment, and automated livestock watering systems. Field technicians prioritize the BP900 for its FNPT connections and compact 4-7/8 inch footprint, making it ideal for tight retrofit installations where maintaining ASSE 1012 compliance is non-negotiable. Whether you are performing routine backflow testing or a full boiler repair, this dual-check valve delivers the thermal stability and pressure management required for modern mechanical rooms.

• Dual-Check Protection: Features two independent check valves and an atmospheric vent for maximum safety against cross-contamination.
• High Temperature Resistance: Rated for up to 250°F, making it suitable for both hot and cold water service applications.
• Corrosion-Resistant Internals: Stainless steel working parts and a bronze casting ensure longevity in aggressive water conditions.
• Compact NPT Connection: Standard 1/2" FNPT threading allows for rapid integration into existing copper or PEX supply manifolds.
• Universal Replacement: The BP900 is technically identical to the BP900/U model, ensuring seamless compatibility for inventory management.

Is the Resideo BP900 suitable for continuous pressure systems?
Yes, this model is specifically designed for continuous pressure applications on small supply lines, unlike standard atmospheric vacuum breakers that are only for intermittent use.

Can this backflow preventer be installed in a vertical orientation?
For optimal performance and to ensure the intermediate vacuum breaker vents properly, it is best practice to install the unit horizontally with the vent pointing down, though local codes should always be consulted.

What is the difference between the BP900 and BP900/U?
In the Resideo catalog, these part numbers are identical in form, fit, and function. The "/U" suffix typically denotes "Universal" or retail packaging but the technical specifications remain exactly the same.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.