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All Categories > Drilling Rig Air Valves for MMO (Marine, Mobile & Oil Field) > Emerson Aventics (WABCO) Drilling Rig Air Valves > Aventics Check Valves > Rexroth Dryseal NPTF Check Valves > Item # R431003553  
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Item # R431003553, Rexroth Dryseal NPTF Check Valves

Type: High Capacity
Working Pressure: 250 psi maximum
Operating Temperature: -40°F to +160°F (+200°F intermittent service)
Media: Air
Port Size: 1/8" to 1" NPTF


Check valves are installed in a pipeline to permit flow of air in one direction only.
Less than 1/2 psi pressure is required to open the valve. The valve is spring loaded to close when no pressure differential exists.
Therefore, it may be mounted in any position.
The body and cap are made of anodized die cast aluminum. A stainless steel valve, plated spring and Buna N Seal also contribute to trouble free service.


Old Part #

P 055023
P -055023-00000

P 55023




High Capacity

Maximum Working Pressure

250 psi

Operating Temperature

-40 to +160 ºF

Intermittent Service

+200 ºF




1/8 Inch

Capacity (Cv)



2 3/4 oz

"A" Pipe Taps

1/8"-27 Dryseal NPTF

Dimension B

7/8 Inch

Dimension C

15/16 Inch

Dimension D

2 3/16 Inch

Dimension E

2 Inch


All pipe taps are DRYSEAL NPTF. Choice of 1/8", 1/4", 3/8", 1/2", 3/4" and 1".


·  Flow Type

·  Schematic Diagram

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