BA Orifice Plate Sizing

Function

To restrict the fluid flow in or out of valve ports.

Application

“Out–Flow” Position

Orifice plates installed in this position restrict flow of pressurized oil flowing out of the valve port to a cylinder or motor, offering the advantage of:

Improved control for extending single or double acting cylinders or speed of a hydraulic motor.

“In–Flow” Position

Orifice plates installed in this position restrict flow entering the valve port from a cylinder or motor, offering these advantages:

1. Prevents cavitation of cylinder or motor having an inertia load.
2. Improves control of operation for double or single acting cylinders when lowering.
3. Improves control of rotary cylinders which have inertia loads in both directions. (use an orifice plate in both cylinder ports)

Orifice Sizing

Cross Engineering will calculate the proper orifice size for each application if flow rate, system pressure, and pressure drop requirements are supplied.

Installation Instructions

Insert orifice plate into port in proper position to obtain desired direction of flow restriction. Lips of plate always point toward the pressure source to assure proper seating. (For “IN–FLOW” restriction, plate lips point “OUT”. For “OUTFLOW” restriction, plate lips point “IN”.)