Valve Reduced Trim

Control Valves
1

It Is an undersized orifice. Reduced or restricted capacity trim is used for several reasons;

  1. Adapts a valve large enough to handle increased future flow requirement with trim capacity properly sized for pressure needs.

  2. A valve with adequate structural strength can be selected and still retain reasonable travel vs. capacity relationships.

  3. A valve with a large body using restricted trim cannot be used to reduce inlet and outlet fluid velocities.

  4. It can eliminate the need for pipe reducers.

  5. Errors in over sizing can be corrected by use of restricted capacity trim.

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