FLOW CONTROLS
FC12-20 Flow Control
DESCRIPTION
A screw-in, cartridge-style, variable orifi ce, hydraulic fl ow control valve with reverse
fl ow check.
OPERATION
The FC12-20 adjusts fl ow passage from ➁ to ➀ to full open with counterclockwise
rotation.
The cartridge has a fully guided check which is spring-biased closed until suffi cient
pressure is applied at
➀ to open to ➁.
FEATURES
• Adjustments cannot be backed out of the valve.
• Desired settings may be locked down.
• Hardened parts for long life.
• Aluminum knob option.
• Positive shut-off.
• Linear adjustment.
RATINGS
Operating Pressure: 240 bar (3500 psi)
Flow: See Performance Chart
Internal Leakage: 0.15 cc/minute (3 drops/minute) max. at 240 bar (3500 psi)
Adjustment Torque:
@ 6.9 bar (100 psi): 0.17 Nm (1.5 lb.-in.)
@ 207 bar (3000 psi): 16.9 Nm (150 lb.-in.)
Standard Bias Spring at Crack: 1.4 bar (20 psi)
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
Cavity: VC12-2; See page 9.112.1
Cavity Tool: CT12-2XX; See page 8.600.1
Seal Kit: SK12-2X-M; See page 8.650.1
USASI: ISO:
5.202.1
PERFORMANCE (Cartridge Only)
1
23
4
16.6/240
12.4/180
8.3/120
4.1/60
FLOW lpm/gpm
PRESSURE DROP bar/psi
20.7/300
7.6
2
68.1
18
53.0
14
113.6
30
128.7
34
98.4
26
83.3
22
TURNS
22.7
6
37.9
10
➁ to ➀ —; ➀ to ➁ - - -
32 cSt/150 sus oil at 40°C
Fully
Open
Fully
Closed
➀ to ➁
HYDRAFORCE
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SYMBOLS
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Cartridge: Weight: 0.20 kg. (0.45 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-up standard.
Standard Ported Body: Weight:
0.57 kg. (1.25 lbs.) Anodized high-
strength 6061 T6 aluminum alloy,
rated to 207 bar (3000 psi). Ductile
iron bodies available; dimensions
may differ. See page 8.012.1
FC12-20
MATERIALS TO ORDER
DIMENSIONS
5.202.2
FC12-20__ - __ __ __ - __
Adjustment Option
1/4 in. Hex Allen Head A
1-1/2 in. Dia. Alum. Knob B
Option A with Cover Cap C
Top Knob with Lock Nut D
Top Knob Only E
Porting
0 Cartridge Only
10T SAE 10
12T SAE 12
16T SAE 16
4B 1/2 in. BSP*
6B 3/4 in. BSP*
8B 1 in. BSP*
*BSP Body; U.K. Mfr. Only
Seals
N Buna N (Std.)
V Fluorocarbon
®
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