Eaton Flow Controls - FN, F(C)G, FRG


Vickers temperature and pressure compensated flow controls allow precise volumetric control. These valves are available with  bypass type) or without (restrictor type) integral relief valves and are suitable for pressures up to 251 bar (3600 psi).

FN Valves (Regulator) 

FN valves are ideally suited for a great number of applications requiring flow regulation without pressure
compensation –– applications where the relatively constant nature of the load minimizes the need for pressure compensation. They are not intended to be used as a shut-off valve.

F(C)G Valves (Restrictor)

F(C)G valves are pressure and temperature compensated to provide a precise adjustable flow rate, regardless of load pressure or temperature changes. The valve is adjustable over the entire flow range.

The optional trim adjustment on the F(C)G – 02 size, permits adjustment of approximately  8% of flow setting when the valve locking device is in a locked position. Reverse free flow check option is available.

Tamper resistant adjustment of the feed rate is available in the F(C)G – 02 size valve. Valves are suitable for system pressures up to 248 bar (3600 psi) and cover a flow range up to 106 lpm (28 USgpm)

FRG Valves (Bypass)

FRG valves are pressure and temperature compensated to provide a precise adjustable flow rate regardless of load pressure or temperature changes. The valve incorporates an integral relief valve with maximum pressure settings of 69 bar (1000 psi), 138  2000 psi), or 207 (3000 psi) and has a flow capacity of 28 USgpm (106 lpm

Eaton Flow Controls - FN-4, 20 Series


The FN-4 valve is an adjustable restrictor valve fitted with an integral check. It allows restricted flow in one direction and free flow in the opposite direction. All valves can be used with antiwear hydraulic oils, water-in-oil emulsions and water glycols. Add prefix “F3” to model designation when phosphate ester (not alkyl-based) or chlorinated hydrocarbons are to be used.

Eaton Flow Controls F(C)G 3, 10 Series


These pressure compensated valves are designed to provide adjustable controlled flow rates independent of changes in inlet and/or outlet pressures above a minimum pressure differential. Models are available with or without integral reverse flow check valves. Those with check valves are optionally available with an anti-jump feature designed to eliminate transient surges above the controlled flow rate setting whenever flow is first directed to the inlet port A.

All models have rotary adjustment of controlled flow and can be supplied with or without an integral key-lock feature. The construction of a typical model with integral check valve and anti-jump feature is shown opposite. Its operation is the same as for similar valves described in the “Industrial Hydraulics” manual although the spring-loaded hydrostat is functionally located downstream of the adjustable restrictor, as shown in the “Functional Symbols” section available for download.

Eaton Flow Controls, FN-03; EFN-06 & EFN-10


The FN-03 and EFN-06/10 adjustable one-way restrictors are designed for applications where fluid oil flow regulation without pressure compensation is required. They can be used whenever the working load remains relatively constant. Flow regulation is for one direction only. When the flow is reversed the valve opens against a spring and flow passes through at near zero pressure. These valves therefore cannot be used as isolating valves.

Eaton Proportional Valves, K(A)X(C)G-6/8. 1*Series


These two-stage pressure reducing valves (based on Vickers type X(C)G2V valves, featured in catalog 2321) incorporate an electro-hydraulic proportional pressure pilot stage (Vickers type KCG-3 valve, described in catalog 2162) by which the reduced pressure setting is adjustable in response to an electrical input. Each model (in two sizes, with optional free reverse flow check valve responds to variations of current input to its solenoid, for which separate Vickers drive amplifiers, with PWM output stage and output current control, are available.


  • Remote electrical proportional control of reduced pressure from a choice of five pressure ranges per valve size.
  • Excellent repeatability and stable performance results from cartridge design of mainstage parts.
  • Low installed cost and space requirement from high power/size ratios (more than double that of many conventional designs)
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