The Flomatic 3709LW Model 92LW 6" lever and weight swing check valve is designed for non‑potable water service where controlled closure and dependable backflow prevention are required. This valve features an epoxy‑coated ductile iron body, a rubber seat with standard Nitrile (Buna‑N) sealing, a stainless‑steel shaft, and an external lever and weight assembly.

Specifications:

Standard: AWWA C508

Body: Epoxy‑coated ductile iron

Seat: Rubber with Nitrile (Buna‑N) seal (standard)

Shaft: Stainless‑Steel

Operator: External lever and weight

Max Temperature: 180°F (80°C)

Max Pressure: 200 PSI (2"–12"); 150 PSI (14"–30")

Flange Rating: ASME Class 150

Connection: 6" Flanged, ASME 150#

Weight: 146 lbs

Operation: The swing clapper opens under forward flow and closes as flow reverses to help reduce reverse flow and protect pumps and piping. The external lever and weight can assist closure response in variable flow conditions and help reduce hydraulic shock.

Construction: The epoxy‑coated ductile iron body is built for durability in demanding water system environments. A stainless‑steel shaft and corrosion‑resistant trim components support long service life. The rubber seat with Nitrile (Buna‑N) sealing provides reliable shutoff in typical water service, and alternate elastomer options may be available for applications requiring improved chemical resistance.

Applications: Pump stations, industrial and municipal utility systems, irrigation, and general water service where a lever‑and‑weight swing check valve is required for controlled closure and dependable backflow prevention.

Flomatic Quality: Flomatic manufactures engineered check valves recognized for consistent performance, durable construction, and long service life in demanding pumping applications.

Not for potable water.