A-A-50457 Valves, Radiator, Heating Packless Bonnet, Class 125 PsigThis Commercial Item Description (CID) covers packless bonnet shutoff glove valves for use on radiators and convertors in steam and hot water heating systems with pressure of 25 inches mercury vacuum up to and including 125 pounds per square inch gage (psig).

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A-A-50457A

Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the characteristics of this Commercial Item Description, and that the product conforms to the producers own drawings, specifications, standards, and quality assurance practices. The Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract.

Metric products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest revision of FED-STD-376, and all other requirements of this Commercial Item Description are met.

If a product is manufactured to metric dimensions and those dimensions exceed the tolerances specified in the inch-pound units, a request shall be made to the contracting officer to determine of the product is acceptable.

The contracting officer has the option of accepting or rejecting the product.

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.

Part identification number. The following part identification numbering procedure is for Government purposes and does not constitute a requirement for the contractor.

Part identification designation --A50457-X-X

A50457- Designates a CID

50457- CID number

X- Pattern

X- Size

Notes. Purchaser should specify pattern and size.

ASTM Standards are available from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.

MSS SP-25 is available from Manufacturers Standardization Society of the Valve and Fittings Industry, 1815 North Fort Myer Drive, Arlington, VA 22209.

FED-STD-376 is available from the Naval Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, PA 19120-5099.