Accessory Valves
Pressure Reducing Valve Control Block
PRV Control Blocks Control pressure independently on both the clamp and unclamp side of the fixture regardless of pump pressure setting. Eliminate the wait for full system pressure to finish cycling workholding components. For use in double or single acting systems. DO3 Mounting, use on pump stack or as a remote mounted valve. n Recommended Filtration: 25 Micron (NOM) / 40 Micron (ABS) (minimum).
B
Pressure Adjustment Screw
A
3.63
1.97
.99
1.19
Locknut
TYP 2
Dual PRV Control Block Model No. Inlet Pressure*
.96
Set Pressure
Range Repeat A B
2.00
Manifold Mount Valve Assembly 70-8425-50 5,000 psi 750 to 4,500 psi ± 7% 3.5 10.643 70-8425-53 < 3,000 psi 150 to 900 psi ± 10% 4.2 12.117 >3,000 psi 300 to 900 psi *Maximum Inlet Pressure for PRV is 5,000 psi
1.000
1.61
D03 MOUNTING PATTERN O-RINGS PROVIDED
.218 THRU TYP 4
ILS708401 REV E
"A" PORT PRESSURE REGULATION
Pressure Adjustment Screw
3.63
A
.09
1.97
.99
1.19
Single “A” Port PRV Control Block Model No. Inlet Pressure* Set Pressure
Locknut
.96
Range Repeat A
Manifold Mount Valve Assembly
2.00
70-8425-51 5,000 psi
750 to 4,500 psi ± 7% 3.5
1.000
< 3,000 psi >3,000 psi
150 to 900 psi 300 to 900 psi
70-8425-52
± 10% 4.2
1.61
DO3 MOUNTING PATTERN 0-RINGS PROVIDED
.218 THRU TYP 4
*Maximum Inlet Pressure for PRV is 5,000 psi
Pressure Adjustment Screw
"B" PORT PRESSURE REGULATION
Single “B” Port PRV Control Block Model No. Inlet Pressure* Set Pressure
3.63
L-16
A
Range Repeat A
1.97
Manifold Mount Valve Assembly
.99
P-16
70-8425-54 5,000 psi
750 to 4,500 psi ± 7% 3.5
1.19
< 3,000 psi >3,000 psi
150 to 900 psi 300 to 900 psi
Locknut
70-8425-55
± 10% 4.2
.96
*Maximum Inlet Pressure for PRV is 5,000 psi
.09
NOTE: Maximum system flow rate is 1.5 gpm (346.5 cu. in. per minute) for all VektorFlo ® special function valves, unless noted.
2.000
1.000
DO3 MOUNTING PATTERN 0-RINGS PROVIDED
1.61 .218 THRU TYP 4
Excess flow voids warranty.
ILS708402 REV E
© Vektek, August 2026
800-992-0236
www.vektek.com
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