CF8M Counterweight Check Valve

NSV CF8M Counterweight check valve

This counterweight check valve is available in 20-inch and 24-inch sizes, featuring a lever-and-weight external actuation system. The counterweight provides consistent closing torque without relying on springs, making it ideal for large-diameter, high-flow applications where spring fatigue may be a concern . The valve remains fully open under normal forward flow and closes rapidly when flow decelerates or reverses, effectively preventing backflow and minimizing water hammer impact in large piping systems.

Key Features

Sizes: Large-diameter designs suitable for high-flow industrial and municipal pipelines .

Counterweight & Lever Mechanism: Provides stable, maintenance-free closing force; effective even in high-temperature or demanding services .

Rapid Closure: Responds immediately to flow reduction or reverse flow, protecting pumps and compressors from destructive reverse rotation .

Durable Construction: Available in carbon steel (WCB, LCB), stainless steel (CF8/CF8M), and other alloys to suit various media and service conditions .

Flexible Installation: Can be installed horizontally or vertically (flow upward for vertical installation) .

Low Pressure Drop: Swing-type design ensures minimal flow resistance when fully open .

Typical Applications

Widely used in pumping station discharge lines, cooling water systems, water treatment plants, power plant circulating water systems, and large industrial pipelines . Particularly suitable for large-diameter applications requiring reliable backflow prevention and minimized water hammer effects .

FAQ

1.Q: What's the brand of your company can supply ?

A:NSV or OEM service.

2. Q: What kinds of valves do you manufacture?

A: We usually manufacture valves made of various materials such as cast Iron/ carbon steel,stainless steel,Alloy steel and industrial valves such as ball, gate, globe, check, bellows seal and ETC. For detail information, please refer to " Download>E-Catalog" of homepage.
3.Q:How can I visit your company?

A: We always welcome you to factory. However, your visit intention shall be pure. You can visit factory conveniently by noticing your visit to the department in charge depending on your visit purpose in advance. For the way to factory, please refer to map"About Us" of homepage.