Watts® Series LF919 Reduced Pressure Zone Assemblies

Series LF919 Reduced Pressure Zone Backflow assembly protects potable water supplies in accordance with national plumbing codes and water authority requirements. This series can be used in a variety of installations, including prevention of health hazard cross-connections or containment at the service line entrance.
This series features two poppet-style check valves, replaceable check seats, and an intermediate relief valve. Its compact modular design facilitates maintenance and assembly access. Sizes 1⁄2" to 1" shutoffs have tee handles. The assembly features Lead Free* construction to comply with Lead Free* installation requirements.
Series LF919 includes a flood sensor to detect excessive water discharges from the relief valve. The sensor is installed on the assembly exterior and does not alter assembly functions or certifications. The sensor relays a signal that triggers notification to facility personnel for corrective action, thus limiting flooding and costly damage.

Stroke

4 Stroke

Max Power

62kW/6000 (r/min)

Cylinders

2 Cylinder

Max Torque

101N·m/5000 (r/min)

Displacement (ml)

1000CC