Mirror Finish High Precision Choke 87.1HRA Valve Trim

High Precision Choke Stem Provides Optimum Good Performance In Erosive Conditions

Basic parts of control valves

A valve is a mechanical device that controls the flow of fluid and pressure within a system or process. A valve controls system or process fluid flow and pressure by performing any of the Following functions.

a) Stopping and starting fluid flow

b) Varying (throttling) the amount of fluid flow

c) Controlling the direction of fluid flow

d) Regulating downstream system or process pressure

e) Relieving component or piping over pressure

There are many valve designs and types that satisfy one or more of the functions identified above. A multitude of valve types and designs safely accommodate a wide variety of industrial applications.

Tungsten Carbide Materials Grade As Below:

Valve Trim

The internal elements of a valve are collectively referred to as a valve’s trim. The trim typically includes a disk, seat, stem, and sleeves needed to guide the stem. A valve’s performance is determined by the disk and seat interface and the relation of the disk position to the seat.

Because of the trim, basic motions and flow control are possible. In rotational motion trim designs, the disk slides closely past the seat to produce a change in flow opening. In linear motion trim designs, the disk lifts perpendicularly away from the seat so that an annular orifice appears.

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