How Brass Swing Check Valves Work
A swing check valve contains a hinged disc, sometimes called a flapper or gate, mounted inside the valve body. When liquid flows in the intended direction, the pressure pushes the disc open on its hinge, allowing media to pass through with minimal turbulence or pressure loss. When flow stops or reverses, the disc swings closed under its own weight and the force of the backpressure, sealing the pipeline and preventing reverse flow. There is no handle or external operator. The valve is controlled entirely by the flow conditions inside the pipe.
Swing check valves are designed for horizontal installations where gravity assists the closing action. They are not suitable for vertical pipe runs unless a spring-assisted model is used.
Construction and Specs
Our Smith Cooper brass swing check valves, series 01739191, are built for long service life in demanding plumbing and industrial environments:
- Body: Cast brass, one-piece construction for consistent wall thickness and strength
- Disc: Forged brass for superior durability and sealing performance compared to cast discs
- End connections: Female NPT threads on both ends, IPS
- Pressure rating: 200 PSI CWP, WOG non-shock, 125 PSI WSP steam
- Certification: ANSI/NSF 61.8, drinking water system components
- Manufacturer: ISO 9001:2008 certified facility
The screwed cap design allows access to the disc and seat for inspection and maintenance without removing the valve from the pipeline.
| Smith Cooper Brass Swing Check Valve | |||||
|---|---|---|---|---|---|
| Brand | Model | Body Material | ANSI/NSF | Valve Type | Links |
| Smith Cooper | Brass Check Valve | Brass C85710 | 61.8 | Threaded Ends |
Dimensions Request a Quote |
| Size Range | Seat Material | Disc Material | |||
| 3/8" - 4" | Not Specified | Brass C85710 | |||
Available Sizes
Brass swing check valves are available in six standard IPS sizes:
- 1/2"
- 3/4"
- 1"
- 1-1/4"
- 1-1/2"
- 2"
Not sure which size you need? Our product specialists can help you match the right valve to your pipe size and system requirements. Call (866) 777-8001.
Installation
Brass check valves install inline using female NPT threaded connections on both ends. Apply PTFE thread tape or pipe thread sealant to the male pipe threads before assembly for a leak-free joint. Install the valve in the correct flow direction, indicated by the arrow cast into the body. Swing check valves should be installed in horizontal pipe runs where gravity helps the disc close. Allow adequate clearance around the valve for future maintenance access to the screwed cap.
Common Applications
- Potable water supply and distribution
- Residential and commercial plumbing backflow prevention
- Boiler and water heater protection
- HVAC hydronic systems
- Sump pump and well pump discharge lines
- Compressed air systems
- Fire protection and sprinkler systems
- Irrigation systems
- General industrial piping
Why Buy Brass Check Valves from Commercial Industrial Supply?
We are an authorized Smith Cooper International distributor and stock brass swing check valves across the full 1/2" through 2" size range. We also carry the complete line of brass valves including brass ball valves and brass gate valves, so you can source your entire brass valve package from a single supplier. Wholesale pricing is available for contractors and project orders. Call (866) 777-8001 or request a quote online.