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Metal Seated Piston Lift Check Valve Cast Steel Stellite Double Flanged Non Return Valve

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Wenzhou Goldtop Valve Co.LTD

Brand Name : GOLD TOP

Certification : API 6D

Place of Origin : 中国

MOQ : 1pcs

Price : Negotiation

Supply Ability : 100+pcs+30days

Delivery Time : 30days

Packaging Details : Plywood Case

Material : Carbon / Stainless / Alloy / Duplex Steel

Size : 2"～36"

End Connection : FF / RF/ RTJ / BW

Pressure : 150# ～1500 #

Testing Standard : API598

Application : Water , Oil, Gas, Etc.,

Metal Seated Piston Lift Check Valve Cast Steel Stellite Double Flanged Non Return Valve

Piston Lift Check Valve

Introduction

A piston check valves are similar to lift check valves. the only difference is that piston check valves has a dashpot consisting of piston and cylinder that provides cushioning effect during operations.
The dashpot produces a damping effect during operation, thereby eliminating the damage caused by the frequent operation of the valve.
The flow of fluid through piston check valve is similar as lift check valve.
The construction of seat and disc for the piston check valve also same with the construction of lift check valve where the arrangement of seating is similar to a globe valve.
Piston check valves do not require an operation. The closing of the disc depends on the back flow and gravity whereas; the opening of the disc depends on the upward flow.
Piston check valve can be found in 1” to 12” size range with 150# to 900# class range.

Operation

Flow to piston check valves must always enter below the seat.
As the flow enters, the disc is raised within guides from the seat by the pressure of the upward flow.
When the flow stops or reverses, the disc is forced onto the seat of the valve by both the backflow and gravity.

Application

Piston check valves are used primarily in conjunction with globe and angle valves in piping systems experiencing very frequent changes in flow direction.
Piston Check Valves are particularly suitable for high-pressure service where velocity of flow is high.

One Type

Cass 900~2500 Pressure Seal Piston Check Valve

Standard Material Specifications

Note: Other materials are available upon request.

Dimensions (mm) and Weights (Kg)

Product Tags:

metal seated check valve

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