FLOW CONTROLS

FR08-20F Regulator, Pressure-Compensated

DESCRIPTION

A screw-in, cartridge-style, ﬁ xed oriﬁ ce, pressure-compensated, hydraulic ﬂ ow

regulating valve (restrictive type).

OPERATION

The FR08-20F maintains a constant ﬂ ow rate out of ➁ regardless of load pressure

changes in the circuit downstream of

➁.

The ﬁ xed control oriﬁ ce is factory preset to customer ﬂ ow speciﬁ cation. The valve

begins to respond to load changes when the ﬂ ow through the valve creates a

pressure differential across the control oriﬁ ce greater than 5.5 bar (80 psid), with

accurate ﬂ ow maintenance from 7.6 to 240 bar (110 to 3500 psid). Reverse ﬂ ow

(

➁ to ➀) returns through the control oriﬁ ce and is non-compensated.

FEATURES

• Hardened parts for long life.

• Quiet, modulated response.

• Compact size.

RATINGS

Operating Pressure: 240 bar (3500 psi)

Flow Settings: 0.4 lpm (0.1 gpm) min., 7.5 lpm (2.0 gpm) max.

Standard Compensator Bias Spring: 5.5 bar (80 psid) differential

Flow Maintenance Setting Range: 0.2 to 1.8 lpm (0.05 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: VC08-2; See page 9.108.1

Cavity Tool: CT08-2XX; See page 8.600.1

Seal Kit: SK08-2X-M; See page 8.650.1

USASI: ISO:

PERFORMANCE (Cartridge Only)

SYMBOLS

5.300.1

5.7/1.5

3.8/1.0

1.9/0.5

1000

138

2000

207

3000

PRESSURE DROP bar/psi

FLOW lpm/gpm

Flow Maint. Characteristic -

32 cSt/150 ssu oil at 40°C

➁➀

HYDRAFORCE

.com

Blue rectangles are links to other catalog pages.

FR08-20F - __ __ __ - __ - / __ __ __ __

Cartridge: Weight: 0.07 kg. (0.15 lbs.

Steel with hardened work surfaces.

Zinc-plated exposed surfaces.

Buna N O-rings and ﬂ uorocarbon

back-ups standard.

Standard Ported Body: Weight:

0.16 kg. (0.35 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

Setting in lpm

Range: 0.4 to 7.5 lpm

Specify, for example:

M1.8 1.8 lpm

M5.0 5.0 lpm

etc.

Setting in gpm

Range: 0.1 to 2.0 gpm

Specify, for example:

1.3 1.3 gpm

2.0 2.0 gpm

etc.

Drill Size Method

In thousandths of an inch.

Specify, for example:

D030 0.030 in. control oriﬁ ce hole

etc.

Porting

Cartridge Only 0

SAE 4 4T

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.

FR08-20F

5.300.2

Seals

Buna N (Std.) N

Fluorocarbon V

Note: Minimum drill diameter is 0.020 in.

For smaller oriﬁ ce sizes consult factory.

HYDRAFORCE

.com

Blue rectangles are links to other catalog pages.