Pressure Compensators/Control Elements FCR101F08V

Compensator valves are used to provide pressure compensated control across an external fixed or adjustable orifice, providing constant flow regardless of upstream or downstream pressure changes.

Inlet flow (upstream of the orifice or flow control valve) is split with one portion going to the compensator port inlet, the other portion passes through the orifice, or flow control valve, to the supply port. As pressure drop across the orifice reaches the selected compensator pressure drop, the higher pressure (pre-orifice) starts to shift the compensator spool into a throttling position. The valve works to maintain a constant pressure drop across the orifice. Using this type of valve allows greater flexibility in design and flows as these valves can flow as much as 40 gallons per minute.

Compensator valves are used in circuits where a constant flow is desired regardless of upstream or downstream loads. As the pressure downstream of the compensator increases, the valve is forced open to maintain the constant pressure drop across the fixed, or adjustable, orifice. Conversely, if the pressure increases upstream of the orifice, the compensator valve will be forced closed to maintain the constant pressure drop across the orifice.

Parker offers two sizes of restrictive type of pressure compensators ranging in flows from 10 gallons per minute to 40 gallons per minute, and pressures up to 3500 psi.

FCR101 - 10 gpm rated flow (38 lpm), 3500 psi. Differential pressure ranges of 40, 80, and 160 psi and is available with Nitrile or Fluorocarbon seals.

FCR161F - 40 gpm rated flow (150 lpm), 3500 psi. Differential pressure ranges of 40 and 160 psi and is available with Nitrile or Fluorocarbon seals.

Pressure compensators can typically be found in applications such as conveyor circuits in saw mills, or lumber yards, steel mills, or cylinder control circuits in steel mills or foundries.

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