Vektek Inch Hydraulic Clamping Catalog

Accessory Valves

Pilot Operated Check Valve

4X .28

K

INLET PORT G

COUNTERBORE TYPE 70-3317-70

D

L M

A

E

C

F

.28

L M

2.47

2.75

3.62

OUTLET PORT G

B

J

Pilot Operated Check Valve n Cartridge and Manifold Mount versions. n Sealed pilot piston eliminates cross circuit leakage. n 5:1 Ratio of Pilot to Check pressure for release. n Unclamp device sequencer manages single circuit unclamp timing. n Flows up to 1.5 gal/min at 5,000 psi maximum pressure.

2.30

1.39

.49

SAE 2 PILOT PORT

MANIFOLD OUTLET PORT H

MANIFOLD PILOT PORT H

MANIFOLD INLET PORT H

Assembly Dimensions Model No. Mounting Style A B C D E F G H J

ILS703305 REV B

K L M 70-3311-13 Manifold/SAE 2.00 1.63 1.00 1.66 1.56 .34 SAE 6 SAE 2 Plug 1.06 1.13 .28 .44 70-3317-70 Manifold Only 1.75 1.50 .88 1.53 1.44 .22 N/A N/A .94 N/A .28 .44

M-4

MOUNTING DIMENSION FOR PILOT CHECK VALVE P/N 70-3311-13 AND 70-3317-70

For proper sealing, mating surface must be flat to 0.003 in. with a maximum 63 µ in. R a surface finish.

2.187

1.981

1.075

.169

.130 .090 3 PLACES FOR MANIFOLD PORTING

.657

.562

1.313

4X 1/4" MOUNTING HOLES THREAD .380 MINIMUM THREAD DEPTH

PILOT PORT

INLET PORT

ILS703307 REV C

OUTLET PORT

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© Vektek, January 2023

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