FLOW CONTROLS
FR08-30F Regulator, Pressure-Compensated
DESCRIPTION
A screw-in, cartridge-style, pressure-compensated, non-adjustable fl ow regulator,
intended for use in fi xed displacement hydraulic circuits requiring partial pump fl ow
diversion on a priority basis.
OPERATION
The FR08-30F maintains a constant fl ow rate from ➂ regardless of load pressure
changes in the system downstream of
➂, or in the bypass leg at ➁.
The valve’s spool maintains a constant differential pressure of 6.5 bar (95 psi) across
a fi xed internal orifi ce, thereby regulating the hydraulic fl ow rate from
➀ to ➂.
The FR08-30F is a priority type regulator, delivering the pump fl ow to
➂ fi rst, then
bypassing excess to
➁. All ports may be fully pressurized.
Flow out of priority port
➂ may vary based on input fl ow amount, particularly with
lower temperatures and increased fl uid viscosities. Settings may need to be
established through correlation study. Consult factory.
FEATURES
• Hardened parts for long life.
• Quiet, modulated response.
• Compact size.
RATINGS
Operating Pressure: 207 bar (3000 psi)
Flow Rate: 7.6 lpm (2.0 gpm) max. regulated; 11.4 lpm (3.0 gpm) max. input.
Inlet pressure at
➀ begins to rise over the compensating differential
when bypass fl ow exceeds 7.5 lpm (2 gpm)
Standard Compensator Bias Spring: 6.5 bar (95 psid) differential
Flow Maintenance Setting Range: 0.4 to 1.8 lpm (0.10 to 0.49 gpm) to accuracy
of ±15%; 1.9 to 7.5 lpm (0.5 to 2.0 gpm) to accuracy of ±10%
Temperature: -40 to 120°C
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC08-3; See page 9.108.1
Cavity Tool: CT08-3XX; See page 8.600.1
Seal Kit: SK08-3X-TB; See page 8.650.1
PERFORMANCE (Cartridge Only)
USASI: ISO:
SYMBOLS
5.340.1
5.7/1.5
3.8/1.0
1.9/0.5
69
1000
138
2000
207
3000
PRESSURE DROP bar/psi
FLOW lpm/gpm
Priority
Flow Maint. Characteristic -
32 cSt/150 ssu oil at 40°C
➀➂
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FR08-30F - __ __ __ - __ - / __ __ __ __
Cartridge: Weight: 0.14 kg. (0.30 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and back-ups
standard.
Standard Ported Body: Weight:
0.27 kg. (0.60 lbs.) Anodized high-
strength 6061 T6 aluminum alloy,
rated to 207 bar (3000 psi). Ductile
iron bodies available; dimensions
may differ. See page 8.008.1.
DIMENSIONS
MATERIALS TO ORDER
Porting
Cartridge Only 0
SAE 6 6T
1/4 in. BSP* 2B
3/8 in. BSP* 3B
*BSP Body;
U.K. Mfr. Only
Note: Compensator spring values may
be varied for OEM application to provide
changed differential pressure/output
fl ow relationships. Consult factory.
Priority Flow
Setting in lpm
Range: 0.4 to 7.6 lpm
Specify, for example:
M1.8 1.8 lpm
M5.0 5.0 lpm
etc.
Priority Flow
Setting in gpm
Range: 0.1 to 2.0 gpm
Specify, for example:
1.3 1.3 gpm
2.0 2.0 gpm
etc.
Priority Flow
Drill Size Method
In thousandths of an inch;
Specify, for example:
D030 0.030 in. control orifi ce hole
etc.
FR08-30F
5.340.2
Seals
Buna N (Std.) N
Fluorocarbon V
Note: Minimum drill diameter is 0.020 in.
For smaller orifi ce sizes consult factory.
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