1、COMMERCIAL ITEM DESCRIPTION A-A-50456A April 7. 1989 SUPERSEDING January 15, 1982 A-A-50456 VALVES, RADIATOR, HEATING PACKED BONNET, CLASS 150 PSIG The General Services Administration has authorized the use of this comercial Item description In preference to Type I; Styles A and B; Patterns 1 and 2;
2、 Services 1, 3, and 4; Classes 25, 60, 100, 125, and 150 of Federal Specification WW-V-160. Abstract. This Comercial Item Description (CID) covers packed bonnet shutoff glove valves for use on radiators and convectors in steam and hot water heating systems with pressures of 25 inches mercury vacuum
3、up to and including 150 pounds per square inch gage (psig). Salient characteristics. Leakage thru valve stem shall be prevented by means of non-metal lic packing (non-asbestos) In accordance wlth manufacturers standard practice. Valves shall be designed to operate at 150 psig working steam pressure
4、and coincident steam 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-rnetallic. Inlet connection shall be threaded female. Outlet connection shall be threaded m
5、ale tailpiece with union nut. Standardization Society (MSS) standard MSS SP-25. Valves shall be of the following patterns, styles, and sizes: Valve marking shall be in accordance with Manufacturers Pattern 1 - Straightway. Pattern 2 - Angle. Pattern 3 - Left hand. Pattern 4 - Right hand. Style A - S
6、tuffing box with adjustable packing nut. Style B - Stuffing box with spring loaded, self-adjusting packing. Ieneficial comments (recommendations, additions, deletions, I Iclarifications, etc., and any other data which may improve this I Idocurnent should be sent by letter to: Commanding Officer, Nav
7、al I IConstruction Battalion Center, ATTN: Code 156, Port Hueneme, CA I 193043-5000 I DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. ,= THIS DOCUMENT CONTAINS 3 PAGES. FSC 4520 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
8、m IHS-,-,-_* A-A-5045bA 45 7777774 0014334 5 W Size 1 - l/Z inch. Size 2 - 3/4 inch. Size 3 - 1 inch. Size 4 - 1 1/4 inch. Size 5 - 1 1/2 inch. Size 6 - 2 inch. Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient char
9、acteristics of this CID and that the product conforms to the producers own drawings, speciications, standards, and quality assurance practices. Government reserves the rlght to require proof o such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisio
10、ns of the contract. Metric oroducts. 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 revision of Federal Standard No. 376
11、, and all other requirements of this CID are met. If a product is manufactured 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 acceptable. The The contracting officer
12、 has the option of accepting or rejecting the product. Requlatory requirements. The oferor/contractor is encouraged to use recovered materials in accordance with Public Law 94-580 to the maximum extent practical. Preservation, packaqinq. packinq. labelinq. and marking. The preservation, packaging, p
13、acking, labeling, and marking shall be as specified in the contract or order. Part identification number. procedure is for Government purposes and does not constitute a requirement for the contractor. The following part identification numbering 2 Provided by IHSNot for ResaleNo reproduction or netwo
14、rking permitted without license from IHS-,-,-. I A-A-5045bA 45 = 7979774 0034335 7 A -A -50456A - Notes. ASTM standards are available from the American Socity Tor Testing and Haterials, 1916 Race Street, Philadelphia, PA 19103. Purchase-r should specify pattern, style, and size. HSS SP-25 is availab
15、le from Manufacturers Standardization Society of the Valve and Fitting Industry, 1815 North Fort Hyer Drive, Arlington, VA 22209. FED-STO-376 is available from the Naval Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, PA 19120-5099. MILITARY INTERESTS: CIVIL AGENCY COORDINATING ACTIVITY: Custodians GSA-FSS Army - HE PREPARING ACTIVITY: Navy - YD Air Force - 99 Navy - YD Review Activities Air Force - 84 DLA - CS Project 4520 -0326 User Activity 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
