Watts 0792011 Valve
The Watts 0792011 (Model LF800M4-QT) is a 3/4-inch Lead Free pressure vacuum breaker designed specifically to prevent back-syphonage of contaminated water into the potable water supply. Engineered for high-hazard continuous pressure applications, this backflow preventer features a silicone rubber check valve disc and a lightweight plastic poppet. The integrated test cocks allow for easy annual testing and maintenance, ensuring the assembly meets local plumbing codes. Contractors prefer the LF800M4-QT for its durable Lead Free cast copper silicon alloy body and the Quarter-Turn (QT) shutoff valves which simplify isolation during service. This anti-siphon valve is ideal for irrigation systems, industrial processing, and other applications where a health hazard could exist if backflow occurs. Its compact design facilitates installation in tight mechanical spaces while maintaining superior flow characteristics and minimal pressure drop across the internal components.
Project Benefits- Lead Free Construction: Complies with NSF/ANSI 61 and 372 standards for potable water safety.
- Field Serviceable: The check valve and air opening port are easily accessible without removing the body from the line.
- Durability: Features a corrosion-resistant internal poppet and a bronze body for long-term reliability in harsh environments.
- Code Compliance: Meets ASSE 1020 and CSA B64.1.2 requirements for high-hazard backsiphonage protection.
What is the maximum working pressure for the LF800M4-QT?
This pressure vacuum breaker is rated for a maximum working pressure of 150 psi (10.3 bar) and can handle fluid temperatures ranging from 33°F to 140°F.
Can this unit be installed horizontally?
No, for proper operation and to meet code requirements, the Watts 800M4 series must be installed in a vertical orientation with at least 12 inches of clearance above the highest downstream piping.
How do I handle winterization for this valve?
To prevent freeze damage, the assembly must be drained. Open the test cocks and leave the ball valves at a 45-degree angle to ensure no water is trapped in the internal cavities.
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.
Original: $578.25
-65%$578.25
$202.39Watts 0792011 Valve
The Watts 0792011 (Model LF800M4-QT) is a 3/4-inch Lead Free pressure vacuum breaker designed specifically to prevent back-syphonage of contaminated water into the potable water supply. Engineered for high-hazard continuous pressure applications, this backflow preventer features a silicone rubber check valve disc and a lightweight plastic poppet. The integrated test cocks allow for easy annual testing and maintenance, ensuring the assembly meets local plumbing codes. Contractors prefer the LF800M4-QT for its durable Lead Free cast copper silicon alloy body and the Quarter-Turn (QT) shutoff valves which simplify isolation during service. This anti-siphon valve is ideal for irrigation systems, industrial processing, and other applications where a health hazard could exist if backflow occurs. Its compact design facilitates installation in tight mechanical spaces while maintaining superior flow characteristics and minimal pressure drop across the internal components.
Project Benefits- Lead Free Construction: Complies with NSF/ANSI 61 and 372 standards for potable water safety.
- Field Serviceable: The check valve and air opening port are easily accessible without removing the body from the line.
- Durability: Features a corrosion-resistant internal poppet and a bronze body for long-term reliability in harsh environments.
- Code Compliance: Meets ASSE 1020 and CSA B64.1.2 requirements for high-hazard backsiphonage protection.
What is the maximum working pressure for the LF800M4-QT?
This pressure vacuum breaker is rated for a maximum working pressure of 150 psi (10.3 bar) and can handle fluid temperatures ranging from 33°F to 140°F.
Can this unit be installed horizontally?
No, for proper operation and to meet code requirements, the Watts 800M4 series must be installed in a vertical orientation with at least 12 inches of clearance above the highest downstream piping.
How do I handle winterization for this valve?
To prevent freeze damage, the assembly must be drained. Open the test cocks and leave the ball valves at a 45-degree angle to ensure no water is trapped in the internal cavities.
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.
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Description
The Watts 0792011 (Model LF800M4-QT) is a 3/4-inch Lead Free pressure vacuum breaker designed specifically to prevent back-syphonage of contaminated water into the potable water supply. Engineered for high-hazard continuous pressure applications, this backflow preventer features a silicone rubber check valve disc and a lightweight plastic poppet. The integrated test cocks allow for easy annual testing and maintenance, ensuring the assembly meets local plumbing codes. Contractors prefer the LF800M4-QT for its durable Lead Free cast copper silicon alloy body and the Quarter-Turn (QT) shutoff valves which simplify isolation during service. This anti-siphon valve is ideal for irrigation systems, industrial processing, and other applications where a health hazard could exist if backflow occurs. Its compact design facilitates installation in tight mechanical spaces while maintaining superior flow characteristics and minimal pressure drop across the internal components.
Project Benefits- Lead Free Construction: Complies with NSF/ANSI 61 and 372 standards for potable water safety.
- Field Serviceable: The check valve and air opening port are easily accessible without removing the body from the line.
- Durability: Features a corrosion-resistant internal poppet and a bronze body for long-term reliability in harsh environments.
- Code Compliance: Meets ASSE 1020 and CSA B64.1.2 requirements for high-hazard backsiphonage protection.
What is the maximum working pressure for the LF800M4-QT?
This pressure vacuum breaker is rated for a maximum working pressure of 150 psi (10.3 bar) and can handle fluid temperatures ranging from 33°F to 140°F.
Can this unit be installed horizontally?
No, for proper operation and to meet code requirements, the Watts 800M4 series must be installed in a vertical orientation with at least 12 inches of clearance above the highest downstream piping.
How do I handle winterization for this valve?
To prevent freeze damage, the assembly must be drained. Open the test cocks and leave the ball valves at a 45-degree angle to ensure no water is trapped in the internal cavities.
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.
