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FC51 Series 3-Port Pressure Compensated Priority Flow Control Valves, Up To 90 GPM Regulated & 3000 PSI

Description & Features

Application	The FC-51 full range pressure compensating variable flow control is designed so that the orifice area varies as the lever is rotated. Fluid travels past the variable orifice, through the compensator spool and then out the controlled flow port. The flow out of the CF port is proportional to the orifice area which can vary from closed to open. The sum of the controlled flow and the excess flow equal the inlet flow, and as the controlled flow increases the excess flow decreases. Both outlets are pressure compensated by a spool that maintains a constant flow while adjusting for pressure. Hunting between a compensated pump and the valve is dampened with a dashpot on the compensator spool. The FC-51 can be used as a 2-port flow control by plugging the excess flow port, and, for best results, limiting the flow to about 50% of the valve's rated flow.
Features	Precision ground chrome plated spool for long life. Diamond honed spool bore provides consistent spool fit with low leakage. Every valve is factory tested for shutoff, linearity, max. flow & pressure compensation.
Materials	Cast iron body. Heat treated spools (Stainless steel available). Buna-N O-Rings (Standard).
Maximum Operating Pressure	3000 PSI.
Recommended Filtration	30 micron.

Products

Model Number	Flow Range	Spool Material
FC-51-1/2 FC51 Series Flow Control Valve	0-16 GPM	Steel
FC-51-3/4 FC51 Series Flow Control Valve	0-30 GPM	Steel
FC-51-3/8 FC51 Series Flow Control Valve	0-8 GPM	Steel
FC51-10SAE FC51 Series Flow Control Valve	0-16 GPM	Steel
FC51-12SAE FC51 Series Flow Control Valve	0-30 GPM	Steel
FC-51-1 FC51 Series Flow Control Valve	0-50 GPM	Steel

Product Questions & Answers (1)

Question by: Lynn H on Apr 2, 2026, 2:50 PM

How precise is the flow control on these? I'm looking for something that can hold steady even with pressure fluctuations.

Answer by: Customer Support on Apr 3, 2026, 5:07 PM

This valve is factory tested for shutoff, linearity, max flow, and pressure compensation. Its pressure-compensated design is intended to maintain constant flow even as pressure varies, and it has a dashpot to dampen hunting between the valve and a compensated pump.