Watts 88004112 Preventer

The Watts 88004112 (1" LF009M2-QT) is a heavy-duty reduced pressure zone assembly designed to prevent the backflow of contaminated water into the potable water supply. Engineered for high-hazard applications, this lead-free backflow preventer features a modular design with two independent check valves and an intermediate relief valve. This unit is a direct drop-in replacement for 0391004, 0063020, 009M2QT-1, 009QT-1, 900-1, and LF009M2-QT-1. It utilizes a bronze body construction and NPT threaded connections, ensuring durability in commercial and industrial plumbing systems. The low pressure drop characteristics and replaceable seats make this RPZ valve an industry standard for technicians requiring reliable back-siphonage and back-pressure protection. This assembly is rated for working pressures up to 175 psi and fluid temperatures between 33°F and 180°F, meeting USC Foundation and ASSE 1013 standards for containment and point-of-use service.

Key Benefits

• Modular Design: Facilitates easy maintenance with internal parts that are accessible without removing the valve body from the line.
• Lead-Free Construction: Complies with federal mandates for potable water applications, utilizing a corrosion-resistant 1-inch bronze body.
• High-Hazard Protection: Provides superior backflow prevention against both back-siphonage and back-pressure in high-risk environments.
• Integrated Quarter-Turn Ball Valves: Equipped with two shutoff valves and four test cocks for simplified backflow testing and system diagnostics.
• Reliable Discharge: The large sensing passage prevents clogging, ensuring the relief valve operates correctly under foul conditions.

Common Questions

Is the Watts LF009M2-QT a direct replacement for older 009 models?
Yes, the Watts 88004112 is the current lead-free professional standard for replacing legacy 1" 009 and 009M2 series assemblies. It maintains same-face-to-face dimensions for seamless installation.

What causes the relief valve to trip or drip on this RPZ assembly?
Intermittent discharge is usually caused by pressure fluctuations or debris caught in the first check valve. Maintenance involves cleaning the check modules; no special tools are required for disassembly of the Watts backflow preventer.

Can this 1-inch backflow preventer be installed vertically?
The LF009M2-QT is designed for horizontal installation. Always check local plumbing codes, as vertical orientation may require specific clearances for the relief valve discharge.

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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.