1/8 in. Brass Spring Check Valve, 500 PSI, Male NPT x Female NPT, Viton Seal | 46575V

The 1/8 in. Male x Female 500 PSI Check Valve with Viton (#46575V) is a 500 PSI rated brass check valve with a Viton (FKM) seal, designed for high-pressure shutoff and backflow prevention where fuels, oils, or hydrocarbons would degrade a standard Buna-N seat. Male NPT x Female NPT connections install directly inline with standard pipe threads.

Technical Specifications

Key Features

• Brass body / Stainless spring construction
• Spring-loaded — closes automatically when flow stops or reverses
• Install in any orientation — vertical or horizontal
• Viton (FKM) seal — compatible with fuels, oils, hydrocarbons, and higher service temperatures than Buna-N
• Cracking pressure factory-set for reliable sealing
• Compact inline form factor — minimal installation space required

Common Applications

Specified for high-pressure water supply, hydraulic return lines, compressed air, and industrial process piping where standard 150 PSI check valves are insufficient. 500 PSI rating suits pumped systems, booster pumps, and pressure-boosted water lines. Also suited to fuel and hydrocarbon transfer lines where Buna-N would degrade.

Technical Resources

• Check Valve Types: Swing, Spring, Wafer, Ball
• How to Choose the Right Valve
• Shop Brass Check Valves

Cross-References

Water, air, or general-purpose service? The Buna-N version (46575) costs less and covers standard service.