Piston Check Valves

The fluid pressure that passes through a device opens the valve whereas the valve is closed by any inversion of flow. Piston, or lift check valves use a body-guided disk  which moves inside the body up and down.

The body guides guarantee the proper alignment of the seat and disk configuration when the valve is closed. The valve is mounted with the flow below the disk, so the pressure and flow rate of the inlet line will force the disk to "float" off the seat, allowing the line liquid to stream through the valve.

If the flow unexpectedly reverses itself, the disk will be forced to the closed position automatically and rapidly, helped by the weight of the disk, stopping the return of row fluid.

When using these valves for dirty media, proceed with caution because that media could cause the disk to settle inside the body cavity.


Forged Steel Piston Check Valve Class 800

Forged Steel Piston Check Valve Class 800

Forged Steel Piston Check Valve Class 800 Our Class 800 Forged Steel Piston Check Valve is appropriate for a variety of apps and media including steam, air, gas and fluids such as heat oil and water.  This Class 800 manual piston check valve is a cost-effective, maintenance-free valve with a body of Forged Steel A105N and an API 602 and ASME B16.34 bonded cap. This class 800 piston check valve can be used either vertically or horizontally and guarantees the safety of..

PN16 Cast Iron ARI CHECKO-V Non-return Check Valve

PN16 Cast Iron ARI CHECKO-V Non-return Check Valve

PN16 Cast Iron ARI CHECKO-V Non-return Check Valve The ARI CHECKO-V check valve uses a spring piston style closure in order to avoid backflow. Suitable for commercial applications in industries such as recycling plants, chemical industries, hospitals, process water installations for mediums such as steam, process water, air and petroleum. PTFE plug design (max 200° C) and custom flange drilling options are accessible on demand. Key features: PN16 Flanged Con..

PN25 Nodular Iron ARI CHECKO-V Non-return Check Valve

PN25 Nodular Iron ARI CHECKO-V Non-return Check Valve

PN25 Nodular Iron ARI CHECKO-V Check Valve In order to prevent backflow, the ARI CHECKO-V check valve uses a spring piston type closure. Useful for industrial applications in applications like recycling facilities, chemical companies, medical facilities, process water installations for mediums including steam, process water, air and oil. PTFE plug configuration (max 200 ° C) and special flange drilling choices are available on request. Key features: PN25 Fla..

PN32 Bronze Screwed Horizontal Lift Check Valve

PN32 Bronze Screwed Horizontal Lift Check Valve

Bronze PN32 Screwed Horizontal Lift Check Valve PN32 Horizontal Bronze Lift Check Valve with BSP screwed end connection. Available in sizes: 1/2 "to 2" with Reinforced PTFE Seat, suitable for temperatures up to 198 ° C. Key features: Horizontal Lift Check Valve Bronze Body PN32 Rated Screwed BSPP BS21 Reinforced PTFE Seat Max Temperature: 198°C Sizes: 1/2" to 2" PN32 Bronze Screwed Horizontal Lift Check Valve..

PN40 Stainless Steel ARI CHECKO-V Y Pattern Non-return Check Valve

PN40 Stainless Steel ARI CHECKO-V Y Pattern Non-return Check Valve

PN40 Stainless Steel ARI CHECKO-V Y Pattern Non-return Check Valve In order to avoid backflow, the ARI CHECKO-V check valve uses a spring piston style closure. This Stainless Steel check valve uses a has an Y pattern body and PN40 flange connection. Appropriate for commercial use in applications like recycling plants, chemical companies, hospitals, process water installations for mediums such as steam, process water, air and petroleum. The body of Stainless Steel implie..

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