Hydraulic-operated check valve

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"AY hydraulic-operated  check valve is also called 1-way lock valve or pressure holding valve. It is similar to a check valve in that it prevents reverse flow.
When there is a need for reverse flow in the fluid loop, it utilizes the control fluid to open the check valve to allow oil to flow in both directions.
hydraulic-operated check valve can be used as two on-off valve, and also can be seen as a pressure retaining valve or a sustaining valve of the standing fluid cylinders."


E Specification 03 06 10
Max.working pressure (MPa) 31.5
Control pressure (MPa) 0.5~31.5
Max.Flow (L/min) 100 350 550
Working fluid Mineral oil;phosphate-ester
Fluid temp. (℃) -20~70
Viscosity (mm²/s) 2.8~380
Opening pressure (MPa) a0.15 b0.3 c0.6 d1.0
Weight (kg) 1.8 4.7 7.8
Cleanliness
The maximum allowable cleanliness of the oil should be according to 9th degree of Standard NAS1638.lt is suggested that the minimum filter rating should be β10≥75。

Hydraulic-operated check valve allows oil to flow in only one direction, and it not allow the oil to flow in the opposite direction unless it uses the hydraulic control.

Hydraulic-operated check valve can be used as two way on-off valve, and also can be seen as a pressure retaining valve or a sustaining valve of the standing fluid cylinders.



Model Specification L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13
A1Y A2Y

A1Y

A2Y

03 102 14.3 15.5 89 13 42.9 18.5 7.2 35.8 - 21.5 21.5 - 31.8
06 133 18.3 47.7 115 18 60.3 27.5 11.1 49.2 - 39.5 20.6 - 44.5
10 156 35.6 46.1 134 22.1 84.2 39 16.7 67.5 - 42.1 24.6 42.1 62.7

Model Specification B1 B2 B3 B4 B5 H1 H2 H3
A1Y A2Y

A1Y

A2Y

03 84 66.7 44 58.8 - 7.9 51 29 36
06 101 79.4 62.4 73 - 6.4 71 38 55
10 117 96.8 77 92.8 - 3.8 85 42.5 70

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