Watts 0061952 Preventer

The Watts 0061952, also identified as the 9DS-1/2, is a specialized dual check valve with an intermediate atmospheric vent designed specifically for non-health hazard applications. As a veteran-grade backflow preventer, this unit is engineered for continuous pressure systems such as boiler feed lines, processing tanks, and laboratory equipment. The 9DS-M3 configuration features a 1/2 inch sweat (SWT) union connection and a forged brass body, ensuring a robust, leak-free installation in compact mechanical spaces. With stainless steel internal parts and tight-seating rubber check valves, it maintains high-performance flow while protecting the potable water supply from backpressure and backsiphonage.

For the contractor in the field, the Watts 9DS-1/2 sweat backflow preventer offers true line-sized construction. This critical design feature allows the internal check modules to open further, effectively reducing the risk of check fouling from dirt and debris. This unit is rated for an operating range of 25 to 175 psi and can handle temperatures up to 250°F. Whether you are performing a new boiler feed line installation or replacing an aging 9DS-M3 1/2 dual check valve, this component provides the field-tested reliability required for modern HVACR and light commercial plumbing systems.

• Dual Check Protection: Features two independent check valves with an atmospheric vent for maximum system security.
• High-Temperature Rating: Capable of handling supply lines up to 250°F, making it ideal for boiler feed pipe applications.
• Debris Resistance: True line-sized internals and an integral strainer help prevent sediment from compromising valve seating.
• Versatile Mounting: Designed for both horizontal or vertical installation depending on mechanical room clearance.
• Serviceability: Union solder (sweat) connections allow for rapid removal and maintenance without cutting pipe.

• What is the difference between Watts 0061952 and 9DS-1/2? They are the same technical part. 0061952 is the ordering code for the 1/2" 9DS-M3 model with sweat connections.
• Is this valve suitable for potable water systems? No, this is a non-lead free (Lead Free: NO) valve intended for non-potable applications like boiler feeds or laboratory equipment.
• Why is my atmospheric vent dripping? Dripping often indicates debris is trapped in the check modules or a pressure differential issue. Cleaning the integral strainer usually resolves this.

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.