48--VALVE,CHECK

364) and MONARCH SUPPLY CO INC (9N735) for the purchase the following: NSN: 4820 016221337 QTY:4 P/N: 803-1385637-052AF Item: VALVE,CHECK This part must be acquired from a manufacturing source(s) specified on a source control or selected item drawing as defined by the current version of DoD-STD-100.

Suitable technical data, Government data rights, or manufacturing knowledge are not available to permit acquisition from other sources, nor qualification testing of another part, nor use of a second source part in the ntended application.