SUN HYDRAULICS CORP
FRDCXAN
Flow Control

This valve is a modification of an FRDA. It controls flow in the bypass mode only. If the bypass pressure exceeds the pressure at the priority port the priority flow will no longer be pressure compensated. This modification was done in an attempt to improve system stability in specific cases.

• Customer must specify a flow rating. Factory set flow ratings are within +/- 10% of the requested setting.
• Maximum pressure at port 3 should be limited to 3000 psi (210 bar).
• Bypass flow is not available until priority flow requirements are satisfied.
• The sharp-edged orifice design minimizes flow variations due to viscosity changes.
• A tuneable adjustment control option provides up to +/- 25% variation from the nominal factory pre-set flow. Adjustment is done with +/- 3 turns of the adjust screw. Screw in (CW) to increase flow.
• Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.