Accessory Valves
Check Valves
“A-B” Check Valve n Sealed pilot piston eliminates cross circuit leakage. n 5:1 Ratio of Pilot to Check pressure for release. n Filters on each port location. n Manifold mounted. n BHC™ body and stainless steel internal components for corrosion protection. “A-B” Check Valve Model No. 70-3311-12 For proper sealing, mating surface must be flat within 0.003 in. with a maximum 63 µ in. R a surface finish.
.59
.28
2.04
2.69
R.23
.23
2.60
"B" INLET SAE 6
1.35
1.35
2.83
"A" OUTLET SAE 6
1.63
1.38
1.09
.94
"A" INLET SAE 6
"B" OUTLET SAE 6
1.89
"A" OUTLET MANIFOLD MOUNT
"A" INLET MANIFOLD MOUNT
ILS703301 REV B
"B" OUTLET MANIFOLD MOUNT
2.00
1.33
"B" INLET MANIFOLD MOUNT
.82
.94
1.89
2.02
PILOT CHECK VALVE "A-B" CIRCUIT MODEL NO. 70-3311-12
NOTE: Pressure applied to the “A” inlet port flows to the “A” outlet port and unlocks check on the “B” side allowing pressure on “B” to return to tank. Pressure applied to “B” inlet flows to “B” outlet and unlocks check on “A” side allowing pressure on “A” to return to tank.
Field repair requires a special Check Valve Installation Tool. Please order Model No. 65-6000-00.
NOTE: Maximum system flow rate is 1.5 gpm (346.5 cu. in. per minute) for all VektorFlo ® special function valves.
Check Valves Permits flow in one direction only. Can not be adjusted for reverse flow.
M-6
Excess flow voids warranty.
DO3 Stack “P” Check Valve Model No. 70-3425-00
Check Valve in Pressure Port
4x O-rings, furnished
SAE 4 Port -Both Ends
In-Line Check Valve Dimensions Model No. A B C 70-3400-01 2.17 0.75 SAE 4 70-3400-06 2.60 1.00 SAE 6
1.75
2.13
.85
ILS703406 REV D
1.70
D03 Valve Mounting Surface -Both Sides
70-3425-00 "P" Check D03 Stack Block
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© Vektek, January 2023
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