The Flomatic 2436R 888R 4" silent wafer-style check valve is a spring-assisted, center-guided check valve built with an epoxy-coated ductile iron body for quiet, non-slam performance in pumping systems. This model includes an EPDM resilient seal (drip-tight) and is designed for installation between ASME Class 150 and 300 flanges where applicable.

Specifications:

Body: Epoxy-coated ductile iron

Seal: EPDM (resilient, drip-tight)

Design: Silent, spring-assisted, center-guided, wafer style

Approvals: NSF/ANSI 61 & 372

Max Pressure: ASME 150#: 300 PSI @ 150°F / ASME 300#: 500 PSI @ 150°F

Max Temperature: 200°F (93°C)

Connection: 4" Wafer, ASME 150# / 300#

Weight: 18 lbs

Operation: As flow decelerates, the spring-assisted poppet begins to close and fully seats at zero velocity, reducing reverse flow and minimizing water hammer. The resilient EPDM seal supports drip-tight shutoff for improved system protection.

Applications: Municipal water systems, booster pump stations, HVAC, irrigation, and industrial pumping applications where silent operation and reduced hydraulic shock are required.

Flomatic Quality: For more than five decades, Flomatic has manufactured engineered check valves trusted worldwide for reliability, performance, and long service life in demanding pumping applications.

Note: 2"–6" sizes are dual rated to fit between both ASME Class 150# and 300# flanges.