Flomatic 3386SC 745 Surge-Stopper® 8" Flo-Flex® Swing Check Valve

The Flomatic 3386SC Model 745 Surge-Stopper® 8" swing check valve is a spring-assisted, 45° seat Flo-Flex® valve designed for high-head, long pipeline applications where controlled closure and surge mitigation are critical. This valve features an epoxy-coated ductile iron body, Buna-N coated disc, stainless-steel cover fasteners, and an internal spring-assisted closure mechanism to help reduce water hammer.

Specifications:

Standard: AWWA C508

Body & Cover: Epoxy-coated ductile iron

Disc: Flo-Flex® 45° seat, Buna-N coated

Fasteners: Stainless-Steel

Max Pressure: 250 PSI

Max Temperature: 140°F (60°C)

Flange Rating: ASME Class 150

Connection: 8" Flanged, ASME 150#

Weight: 215 lbs

Operation: The Surge-Stopper® spring-assisted mechanism accelerates disc closure as flow decelerates, helping to reduce reverse velocity and pressure surges in long pipeline systems.

Construction: Heavy-duty epoxy-coated ductile iron construction with stainless-steel hardware provides long service life in demanding municipal and industrial water systems.

Applications: High-head pumping systems, long transmission mains, municipal water systems, and industrial applications where surge control is required.

Compliance: AIS & BABA compliant.

Flomatic Quality: Flomatic Surge-Stopper® valves are engineered to deliver dependable performance and extended service life in demanding pumping applications.

* Consult factory for availability and size options.