High Flow Plug and Cage Trim

The Plug and Cage trim design gives the maximum flow capacity for a cage trim choke valve.  This trim type is proven for effectiveness in high flow liquid and dual phase flow.

In the closed position, the plug makes contact with a prepared shoulder in the cage to facilitate positive shut off.

This robust trim is most often furnished with linear characteristic in surface hardened stainless steel or tungsten carbide for erosive service.

External Sleeve Trim

The External Sleeve type trim uses a flow sleeve moving over the outside of a ported cage to control flow.  A metal-to-metal seat design on the outside of the flow sleeve and out of the high velocity flow assures positive shut off and an extended seat life.

High erosion resistance of this trim design leads to its use in severe service that may include high pressure drops and fluids with entrained solids, such as formations sands.  This trim is furnished in tungsten carbide with an equal percentage characteristic.

ED Labyrinth Trim

The ED "Energy Dissipating" disk stack is a severe service trim solution to reduce noise, prevent cavitation and with the correct material selection, resist erosion.

The disk stack consists of a multiple set of tortuous paths in parallel to each other.  Several mechanisms are utilized in the design to assist with the conversion of energy into heat without problems of cavitation in liquids and the problems of high noise levels with gasses caused by high velocities.

The ED trim is typically used in high pressure drop valves in water injection and gas production/blowdown.