Watts 1 1/4" LF719-QT

Item Number: 0065304
1 1
$1,289.93
Limited Stock (1)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Watts
  • Size: 1 1/4 inch
  • Weight: 14.4 lb
  • Body Material: Lead Free cast copper silicon alloy
  • Valve Type: Quarter-turn ball valves with lever handles
  • Operating Pressure: 175 PSI
  • Operating Temperature: 33°F – 180°F
  • ASSE Std. 1015 and AWWA Std. C510 compliant
  • Separate access, top entry check valve design for easy maintenance
  • Chloramine resistant silicone and EPDM elastomers

Description

The Watts 1 1/4 inch LF719-QT Lead Free Double Check Valve Assembly is designed to prevent contaminated water from entering the potable water supply. This backflow preventer protects drinking water from non-health hazard cross-connections due to backsiphonage or backpressure, meeting ASSE 1015 and AWWA C510 standards. It features a durable lead-free cast copper silicon alloy body, 175 PSI operating pressure, and quarter-turn ball valves. The compact design allows for easy installation in both horizontal and vertical positions, with top-entry access and reversible seat discs for simplified maintenance. It uses chloramine-resistant elastomers for long-term reliability.

Help Me Connect

The Watts LF719-QT Double Check Valve Assembly features NPT end connections for straightforward installation into existing plumbing systems. This assembly is designed for versatile installation, approved for both horizontal and vertical orientations. Ensure the flow arrow on the valve body is oriented correctly with the direction of water flow during installation. Integral quarter-turn ball valves are included on both the inlet and outlet for isolation and control.

View full details

Additional Details

The Watts 1 1/4 inch LF719-QT Lead Free Double Check Valve Assembly is engineered to protect drinking water supplies from dangerous cross-connections. This backflow preventer assembly is designed for non-health hazard applications, preventing the reverse flow of contaminated water into the potable water supply due to backsiphonage or backpressure, in accordance with national plumbing codes and water authority requirements.

This compact device features a lead free cast copper silicon alloy body, integral quarter-turn ball valves with lever handles, and NPT end connections. Its design allows for both horizontal and vertical installations, with separate top entry access points for easy maintenance.

Key Features

  • Manufactured from Lead Free cast copper silicon alloy for reduced lead content, suitable for consumable water applications.
  • Separate access and top entry check valve design facilitate easy maintenance without special tools.
  • Reversible seat disc rubber extends the overall check valve life.
  • Equipped with chloramine resistant elastomers for enhanced durability.
  • Features replaceable seats and seat discs for serviceability.
  • Compact design suitable for various installation spaces.
  • Top mounted screwdriver slotted ball valve test cocks for convenient testing.
  • Designed for low pressure drop.
  • Plastic on plastic check guiding reduces potential binding from mineral deposits.

Warning: This is a non-stock, special order item and could take up to 2 weeks or more to deliver. All non-stock items are non-refundable. Please be sure you order carefully. If you have ANY questions please contact us before ordering.

Specifications

General

  • Product Type: Double Check Valve Assembly
  • Size: 1 1/4 inch
  • Valve Type: Quarter-turn ball valves
  • End Connections: NPT

Materials

  • Body Material: Lead Free cast copper silicon alloy
  • Elastomers: Chloramine resistant silicone and EPDM
  • Check Seats: PPO
  • Disc Holders: PPO

Performance

  • Operating Pressure: 175 PSI (12.1 bar)
  • Operating Temperature Range: 33°F – 180°F (0.5°C – 82°C)
  • Lead Content: Wetted surface contacted by consumable water contains less than 0.25% of lead by weight

Dimensions & Weight

  • Overall Length (A): 18 15/16 inches (480 mm)
  • Height (B): 6 1/8 inches (156 mm)
  • Width (C): 5 1/8 inches (129 mm)
  • Test Cock Centerline (D): 24 1/16 inches (610 mm)
  • Weight: 14.0 lbs (6.3 kgs)

Certificates & Approvals

  • Standards: ASSE Std. 1015, AWWA Std. C510
  • Certifications: NSF/ANSI/CAN 61-G, cULus
  • Approved By: USC-FCCCHR (Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California)

FAQs

What is a double check valve assembly used for?

A double check valve assembly like the Watts LF719-QT is designed to prevent the reverse flow of non-potable (contaminated) water into a potable drinking water supply. It protects against backsiphonage and backpressure in non-health hazard cross-connection applications.

What does "Lead Free" mean for this product?

The "Lead Free" designation for this Watts LF719-QT assembly means that the wetted surface of the product, which comes into contact with consumable water, contains less than 0.25% of lead by weight. This complies with lead-free installation requirements.

What are the installation requirements for the Watts LF719-QT?

This assembly is approved for both horizontal and vertical installations. It is crucial to install the valve with the flow arrow pointing in the direction of water flow. Always inquire with local governing authorities for specific installation requirements, as these can vary.

What is the maximum operating pressure and temperature for this valve?

The Watts 1 1/4 inch LF719-QT Double Check Valve Assembly has a maximum operating pressure of 175 PSI (12.1 bar). It can operate within a temperature range of 33°F to 180°F (0.5°C to 82°C).

Are replacement parts available for the LF719-QT?

Yes, the Watts LF719-QT features replaceable seats and seat discs. The seat discs are also reversible, which helps to extend the overall life of the check valve. No special tools are required for servicing these components.