National Item Identification Number

01-185-4303
011854303
4820-01-185-4303
4820-01-185-4303

National Stock Number

Item Name

VALVE,CHECK

Federal Supply Class

4820

Description

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

Commercial and Government Entity Code (Supplier Data)

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11836

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NATIONAL OILWELL
6750 S 57TH WEST AVE
2069
TULSA
OK
74101
918-447-4600

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Reference Numbers (Part Numbers)

NS-3981 ASSEMBLY E

Required Categories

MATERIAL
STYLE DESIGNATOR
VALVE SIZE
FACE TO FACE DISTANCE
FLOW CONTROL DEVI

Required Description

COPPER ALLOY BODY
A2A STRAIGHT THRU FLANGED ENDS
6.000 INCHES
18.000 INCHES;