User guide

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Flow Control Valves - 1/8” to 1/2” Port Sizes
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Flow control valves are used to control air flow from air cylinders, thereby controlling the
speeds at which the pistons in the cylinders move. They allow free flow in one direction and
adjustable, precision controlled flow in the other direction. Adjustment in the X-type models
is by means of a screwdriver slot, and in the Y and Z-type models by a knurled knob.
Valve Port Valve Model Avg. C
V
Dimensions inches (mm) Weight
Type Size Number (Fully open) A B C lb (kg)
1/4 1968B2007 2.3 3.5 (89) 1.3 (33) 4.3 (108) 0.5 (0.2)
Y 3/8 1968B3007 2.6 3.5 (89) 1.3 (33) 4.3 (108) 0.5 (0.2)
1/2 1968B4017 2.6 3.5 (89) 1.3 (33) 4.3 (108) 0.5 (0.2)
1/2 1968B4007 7.5 4.8 (121) 1.8 (45) 5.6 (142) 0.8 (0.4)
Y 3/4 1968B5007 8.3 4.8 (121) 1.8 (45) 5.6 (142) 0.8 (0.4)
1 1968B6017 8.3 4.8 (121) 1.8 (45) 5.6 (142) 0.8 (0.4)
1 1968B6007 17 5.4 (130) 2.3 (57) 7.1 (181) 2.2 (1.0)
Y 1¼ 1968B7007 22 5.4 (130) 2.3 (57) 7.1 (181) 2.2 (1.0)
1½ 1968B8017 22 5.4 (130) 2.3 (57) 7.1 (181) 2.2 (1.0)
1½ 1968B8007 50 7.5 (191) 3.5 (90) 9.5 (241) 4.3 (1.9)
Y 2 1968B9007 50 7.5 (191) 3.5 (90) 9.5 (241) 4.3 (1.9)
2½ 1968B9017 50 7.5 (191) 3.5 (90) 9.5 (241) 4.3 (1.9)
STANDARD SPECIFICATIONS(for products above):
Ambient/Media Temperature: 40° to 175°F (4° to 80°C).
Flow Media: Filtered air; 5 micron recommended.
Pressure Range: 5 to 150 psig (0.3 to 10 bar).
Port Threads: NPT standard, BSPP. For BSPP threads add a “D”
prefix to the model number, e.g. D1968B2007.
Free flow of air in one direction with adjustable precision controlled flow in the reverse direction.
Flow Control Valves - 1/4” to 2½” Port Sizes
Series 19 Flow Control Valves
Port Valve Model Avg. C
V
Dimensions inches (mm) Weight
Size Number (Fully open) A B C lb (kg)
1/8 1968F1004 0.5 1.6 (41) 0.6 (16) 1.6 (41) 0.11 (0.05)
1/4 OT 1968F2004 0.5
1.6 (41)
0.8 (20)
2.1 (54) 0.13 (0.06)
1/4 1968F2007 2.3 2.6 (67) 1.2 (30) 2.75 (70) 0.43 (0.19)
3/8 1968F3007 2.3
2.6 (67)
1.2 (30)
2.75 (70)
0.41 (0.18)
1/2 1968F4007 2.3 2.6 (67) 1.2 (30) 2.75 (70) 0.38 (0.17)
STANDARD SPECIFICATIONS (for products above):
Ambient/Media Temperature:
41° to 140°F (5° to 60°C).
Flow Media: Filtered air; 5 micron recommended.
Pressure Range :
Supply Pressure: 217 psi (14.9 bar).
Maximum Operating Pressure: 150 psi (10.3 bar).
Port Threads: NPT, BSPP. For BSPP threads add a “D”
prefix to the model number e.g., D1968F1004.
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Operation: To increase flow: Turn adjustment screw in.
To decrease flow: Turn adjustment screw out.
C
B
A
A
B
C
Free flow of air in one direction with adjustable precision controlled flow in the reverse direction.
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on the inside back cover.
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on the inside back cover.
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11.5 22.5 33.5 44.5 55.5 66.5 77.5 7.5
1/2" 3/8" 1/4"
1/4" 1/8"
Typical Performance Curve