Shop Subplate Manifold Mounted Check Valves

These check valves can easily be mounted on a subplate or manifold using just four bolts. The valve allows flow to pass from port A1/B1 to A2/B2 while normally closing flow from A2/B2 to A1/B1 with load. When pressure is applied at the pilot port, the flow passes from port 2 to 1. The valve has three pilot ratio options. This requires at least one-third (ratio 3:1), one-sixth (ratio 6:1) or one-ninth (ratio 9:1) of the load pressure to be applied at the opposite port to open the valve. The check valve is spring closed to secure the holding position in static conditions and without load. The valve is offered with optional bias spring ranges for back-pressure control.

To shop the entire subplate manifold check valve collection, click HERE.


Each valve has four major configuration options, as shown in the schematic symbols below. 

Check Valve in Line A

Check Valve in Line B

Check Valve in Line P

Dual Check Valve in Line A & B



Working Pressure:

Max Flow:

Flow Range:

4,640psi

15.9 GPM

10.5 GPM to 84.5 GPM

Shop Argo Hytos 2RJV1 Series Check Valves, Poppet Type, Pilot to Open, Modular

Click on the model number in the chart below to view that item. 

The * on a part number indicates it is our most popular offering and regularly in stock. 

Model Number

Check Valve Location

Pilot Ratio, Cracking Pressure

Valve Size

Check Valve Line A

3:1, 43.5psi

D03 (NG6)

Check Valve Line B

3:1, 43.5psi

D03 (NG6)

Check Valve Line C

3:1, 43.5psi

D03 (NG6)



Working Pressure:

Max Flow:

Flow Range:

4,640psi

13 GPM for D03 (NG6), 26GPM for D05 (NG10)

10.5 GPM to 84.5 GPM

Shop Nachi OCP Series Check Valves, Poppet Type, Pilot to Open, Modular

Click on the model number in the chart below to view that item. 

The * on a part number indicates it is our most popular offering and regularly in stock. 

Model Number

Check Valve Location

Cracking Pressure

Valve Size

Check Valve Line A

29psi

D03 (NG6)

Check Valve Line A

72psi

D03 (NG6)

Check Valve Line B

29psi

D03 (NG6)

Check Valve Line P

29psi

D03 (NG6)

Check Valve Line P

72psi

D03 (NG6)

Check Valve Line A & B

29psi

D03 (NG6)

Check Valve Line A & B

72psi

D03 (NG6)


Check Valve Line A

29psi

D05 (NG10)

Check Valve Line B

29psi

D05 (NG10)

Check Valve Line P

29psi

D05 (NG10)

Check Valve Line A & B

29psi

D05 (NG10)

Check Valve Line A & B

72psi

D05 (NG10)



Shop Spare Parts

All spare parts below are designed for use with our D03 (NG3) and D05 (NG10) valves. 




Please see below for additional dimensional and installation details.



Still need help? Give us a call at 281.941.2310 or email us at sales@onehydraulics.com for technical support.