DLA A-A-50457 A-1989 VALVES RADIATOR HEATING PACKLESS BONNET CLASS 125 PSIG《125 级PSIG暖气包装罩散热器阀门》.pdf

《DLA A-A-50457 A-1989 VALVES RADIATOR HEATING PACKLESS BONNET CLASS 125 PSIG《125 级PSIG暖气包装罩散热器阀门》.pdf》由会员分享，可在线阅读，更多相关《DLA A-A-50457 A-1989 VALVES RADIATOR HEATING PACKLESS BONNET CLASS 125 PSIG《125 级PSIG暖气包装罩散热器阀门》.pdf（3页珍藏版）》请在麦多课文档分享上搜索。

1、A -A -5 04 5 7 A SUPERSEDING A -A -504 57 .- April 7. 1989 January 15, 1982 t COMMERCIAL ITEM DESCRIPTION VALVES, RADIATOR, HEATING PACKLESS BONNET, CLASS 125 PSIG The General Services Administration has authorized the use of this commercial item description in preference to Type II; Style 0; Patter

2、ns 1 and 2; Services 1, 3, and 4; Classes 25, 60, 100, and 125 of Federal Specification WW-V-160. Abstract. This Commercial Item Description (CID) covers packless bonnet shutoff glove valves for use on radiators and convectors in steam and hot water heating system with pressures of 25 inches mercury

3、 vacuum up to and including 125 pounds per square inch gage (psig). Salient characteristics. Leakage thru valve stem shall be prevented by mechanical means in accordance with manufacturers standard practice. Valves shall be designed to operate at 125 psig working steam pressure and coincident steam

4、saturation temperature. Valves shall be copper alloy conforming to American Society for Testing and Materials (ASTM) specifications for materials. Valve disc and wheel handle shall be non-metallic. Inlet connection shall be threaded female. Outlet connection shall be threaded male tailpiece with uni

5、oii nut. Valve marking shall be in accordance with Manufacturers Standardization Society (HSS) standard MSS SP-25. Valves shall be of the following patterns and sizes: Pattern 1 - Straightway. Pattern 2 - Angle. Size A - 1/2 Inch. Size 8 - 314 inch. Size C - 1 inch. Size D - 1 1/4 inch. I I I Benefi

6、cial comnents, recomendations, additions, deletions, clarifications.1 I etc. and any data which may improve this document should be sent to: I I Commanding Officer, Naval Construction Battalion Center, ATTN: Code 156, I I Port Hueneme, California 93043-5000. ! DISTRIBUTION STATEMENT- A. unlimited. A

7、pproved for public release; distribution is THIS DOCUMENT CONTAINS d PAGES. * FSC 4520 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Contractor certification. The contractor shall certify and maintaln substantiating evidence that the product offere

8、d meets ihe salient characteristics of this CID and that the product conforms to the producers own drawings, specifications, standards, and quality assurance practices. The t. t, . Government reserves the right to require proof of such conformance prior to Clrst delivery and thereater as may be othe

9、rwise 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 the tolerances specified using conversion tables contained in the latest

10、 revision of Federal Standard No. 376, and all other requirements of this CID are met. If a product is manuactured to metric dimensions and those dimensions exceed the tolerances specified in the inch/pound units, a request should be made to the contracting officer to determine if the product is acc

11、eptable. The contracting officer has the option o accepting or rejecting the product. Requlatorv requirements. recovered materials in accordance with Public Law 94-580 to the maximum extent practical. The oferor/contractor is encouraged to use Preservation: packasins. packing. labelins. and marking.

12、 The Preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order. Part identification number. The following part identiication numbering procedure Is for Government purposes and does not constitute a requirement for the contractor. Notes. Purchaser should s

13、pecify pattern and size. ASTM standards are available from the American Society for Testing and Haterials, 1916 Race Street, Philadelphia, PA 19103. HSS SP-25 is available from Manufacturers Standardization-Society o the Valve and Fittings Industry, 1815 North Fort Hyer Drive, Arlington, VA 22209. F

14、ED-STD-376 is available from the Naval Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, PA 19120-5099. i: 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-HILITARY INTERESTS: Custodians Amy - ME Navy - YO Air Force - 99 Review Act3 vi ti es Air Force - 84 , DLA - CS User Activity A -A-50457A CIVIL AGENCY COORDINATING ACTIVITY: GSA -FSS PREPARING ACTIVITY: Navy - YO Project 4520 -0327 3 i: r. i; Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-