A-A-2297
Discharge valves (Class D) shall be furnished with a rigid female pipe thread
(NPT) inlet adapter and rigid male thead outlet adapter with thread series NH
or NPSH for size 1, NH for Sizes 2 and 4, and NPSH for Size 3.
Conformance testing.
Dry Torque Test. The valve shall be dry and without hydrostatic pressure. A
torque shall be installed in place of the valve handle, and the valve turned to
its open and closed positions. The peak torque shall not exceed 150
pound-inches.
Hydrostatic Pressure Torque Test The valve shall be connected to a hydrostatic
pressure source and 400 psig shall be applied. The valve discharge ends shall
be open. The torque wrench shall be turned to its open and closed positions.
The peak torque shall not exceed 200 pound-inches.
Working pressure test. After the hydrostatic pressure torque test the pressure
shall be icreased to 500 psig for one minute. The valve shall be examined.
Leaks, distortion, mechanical damage, and failures are not permissable.
Workmanship. Cast parts shall be fine-grained, and free from blowholes, porosity,
hard spots, shrinkage, cracks, and other defects. Exterior surfaces shall be
smooth. Excessive material on edges shall not be allowed. Valve shall be free
of any defects which may affect the durability, appearance, or serviceability.
Regulatory requirements. The offeror/contractor is encouraged to use recovered
materials in accordance with Public Law 94-580, to the maximum extent
practicable.
Preservation, packaging, packing, labeling, and marking. The preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order.
Note. Purchaser shall specify the following: Type; class;
size; type of handle for classes B, C, and D if other than manual; thread
series for classes A, C, and D, Size 1.
When this commercial item description is used for procurement, the commercial
item certification clause must appear in the solicitation.
Review activity
Army – ME
PREPARING ACTIVITY:
GSA-FSS
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