National Item Identification Number

00-208-8221
002088221
4820-00-208-8221
4820-00-208-8221

National Stock Number

Item Name

VALVE,STOP-CHECK

Federal Supply Class

4820

Description

A valve with a bolt or stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. The valve disk may be spring loaded. It may be inline or cartridge (manifold) design. See also VALVE (1), LIFT-CHECK and VALVE (1), STOP-LIFT-CHECK.

Commercial and Government Entity Code (Supplier Data)

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Reference Numbers (Part Numbers)

830-2178500-22REVT

Required Categories

REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS
CRITICALITY CODE JUSTIFICATION

Required Description

SELECTED AND TESTED FOR NUCLEAR PROPULSION PLANT SYSTEM
ZZZY
80064
830-217850