ARMY A-A-52611-1997 VALVES AND VALVES SPUDS CAPS AND CORES PNEUMATIC TIRE《充气轮胎内核 帽子 阀门和阀门支杆》.pdf

《ARMY A-A-52611-1997 VALVES AND VALVES SPUDS CAPS AND CORES PNEUMATIC TIRE《充气轮胎内核 帽子 阀门和阀门支杆》.pdf》由会员分享，可在线阅读，更多相关《ARMY A-A-52611-1997 VALVES AND VALVES SPUDS CAPS AND CORES PNEUMATIC TIRE《充气轮胎内核 帽子 阀门和阀门支杆》.pdf（10页珍藏版）》请在麦多课文档分享上搜索。

1、A-A-52611 H 9999974 0175128 870 INCH-POUND A-A-5261 1 Mav 5.1997 SUPERSEDING June23, 1982 ZZ-V-25E COMMERCIAL ITEM DESCRIPTION VALVES AND VALVE SPUDS, CAPS, AND CORES, PNEUMATIC TIRE The General Services Administration has authorized the use of this Commercial Item Description (CID) for all federal

2、agencies. 1. SCOPE. This CID covers requirements for valve assemblies, valve spuds, caps, cores, and grommets for use with tubeless tires or inner tubes used on ground vehicles. Valve assemblies, (hereinafter called valves) include valve stems, caps, cores, spuds, grommets, bridge washers, and hex n

3、uts. Valve assemblies are intended for repair, replacement, and as original equipment on pneumatic tire inner tubes or rims for tubeless pneumatic tires. 2. CLASSIFICATION. 2.1 Tvpes. classes. and stvles. Valves, valve spuds, caps, and cores will be of the following types, classes, styles, and Tire

4、and Rim Association (T distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-52bLl 999997 0175129 727 A-A-5261 1 Class 2 - Air use, rubber base, bare metal stem, Straight, standard bore. Style A - Wah body threads (TR 70, TR

5、 440, TR 441, IR 442, TR 443, TR 444, Style B - Without body threads (TR 440, TR 441, TR 442, TR 443, TR 444, and and TR 445). TR 445). Class 3 - Air use, rubber base, straight, standard bore. Syle A - ParIiaUy threaded stem (TR 87s and TR 87). Style B - Fully threaded stem (TR 4). Style A - Bare me

6、tal stem (TR 87). Style B - Rubber up stem (TR 110 and TR 87). Style A - (TR 13CW and TR 15Cw). Style B - Hand-bendable (TR 1 SOCW). (TR 218A and TR 220A). TR 10784 TR 11754 TR 11774 and TR 1179A). Class 4 - Air-use, rubber base, without body threads, bent 90 degree (O), standard bore. Class 5 - Air

7、-water use, rubber-covered, with identrfying rings, straight, standard bore. Class 6 - Air-water use, rubber base spud with TR CH3 core housing, standard bore Class 7 - Repair, screw-on, standard bore, bent 86“ (TR 10754 TR 1076A, TR 10774 i Type II - Valves, pneumatic, tire, tubeless. Cbss 1 - Air-

8、use, snap-in, standard bore (TR 412, TR 413, TR 414, TR 415, TR 418 Class 2 - Air use, clamp-in, for drop-center rims and side-of-well valve-hole location, TR 423, TR 425, and TR 600HP). standard bore, straight (TR 416, TR 416S, TR 500, TR 501, TR 570, TR 571, TR 572, TR 573, TR 574, and TR 575). st

9、andard bore, bent (TR 5034 TR 505A, TR 5074 TR 5084 TR 509, TR 510, TR 51 1, and TR 534). Class 3 - Air-LEX, clamp-in, for sealed rims and center-of-base valve-hole location, Class 4 - Air-use, clamp-in, bare metal stem With body threads (TR 430). Class 5 - Air-water use, clamp-in, off-the-road, lar

10、ge bore, with removable valve stem, Class 6 - Air-water use, clamp-in, off-the-road, large bore, bent (TR J650 and TR J690). Class 7 - Air-water use, clamp-in, standard bore, straight (TR 618A). Class 8 - Air-water use, clamp-in, off-the-road, standard bore, bent (TR 621q TR 6224 straight (TR J670).

11、 and TR 623A). Type III - Valve spuds, pneumatic tire. Class 1 - her tube, standard bore (TR SPlOOO). Class 2 - her tube, large bore (TR SPlOOO). Class 3 - Tubeless, large bore (TR SP2). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-52bLl 99

12、99974 OLi5130 449 A-A-5261 1 Class 4 - Inner tube, super large bore (TR SP8 16). Class 5 - Tubeless, super large bore (TR SP8B and TR SP9). Type IV - Valve caps, pneumatic tire. Class 1 - Standard bore (TR VC2, TR VC3, and TR VC8). Class 2- Large bore (TR VC6 and TR VC7). Type V - Valve cores, pneum

13、atic tire. Class 2 - Standard bore (TR Ci). Class 3 - Large bore (TR C2). Type VI - Valve sterns, pneumatic tire. Class 1 - Large bore, bent, vehicular (TR J4000 - horizontal length). Type VII - Core housings, pneumatic tires. Class 1 - Standard bore (TR CH3). Class 2 - Super large bore (TR CH8 and

14、CH16). 3. SALENT CHARACTERISTICS. 3,l Materials. Unless otherwise specified herein, materials shall be in accordance with the mandacturers material specifications. All material shall be new and unused. Asbestos, cadmium, and radioactive material shall not be used in this item. Radioactive material i

15、s defined by Title 1 O, Code of Federal Regulations, Part 40, and other radioactive material in which the radioactivity is greater than 0.002 microcuries per gram or 0.01 microcuries total activity for the item. 3.1.1 Material deterioration and control. The valve shall be fabricated from compatible

16、materials, inherently deterioration resistant or treated to provide protection against the various forms of deterioration that may be encountered in any of the applicable storage and operating environments to which the item may be exposed. 3.1.1.1 Ozone resistance. All grommets and rubber valve part

17、s, shall have resistance to weathering as accepted in standard commercial practices. Unless otherwise specied (see 7.3), rubber used externally on valves, type II, class 1, shall show no evidence of cracking when being inspected under 5-power magnification, after the following: Heat age for 72 hours

18、 at 212 degrees Fahrenheit (“F) 100 degrees Celsius (“C) prior to installing in 0.453 inch (in.) i 1.5 millimeters (mm) or 0.625 in. (15.9 mm) diameter rim hole. Install in rim hole, flex loo, and expose to an ozone concentration of 100 parts per million (ppm), by volume to air, for 40 hours at 100

19、+5F (38 -OC). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-52b33 m 9999974 0375333 385 W A-A-526 1 1 3.2 Desim and construction. 3.2.1 Valve. 3 21.1 Valve components. Unless otherwise specified (see 7.3), valves shall conform to the applica

20、ble reference (see 2.1). Each valve shall consist of a cap, a core, and when required, a spud, ail as specifled herein as well as a metal stem, rubber-covered, when required. AU caps, cores, and spuds used as valve components shall meet all applicable requirements. 3.2.1.2 Valve interior desim. Valv

21、e interior design shall be such that when the core is properly installed, the tip of the core plunger ph shall position 0.035 in. (0.89 mm) below, to 0.010 in. (0.25 mm) above, the valve lip. 3.2.1.3 Bridge washer. When specified (see 7.3), each type I, class 2, style A and class 7 valve shall be fu

22、niished with a bridge washer suitable for its intended purpose. 3 2.1.4 Repair valves. Screw-on type repair valves (type I, class 7) shall be finished with a 0.485-26 threaded recess in the base. 3.2.2 &. 3.2.2.1 Cap. Unless otherwise specied (see 7.3), caps shall be furnished and shall conform to t

23、he applicable reference (see 2.1) and may be screwdriver, swivel sealing type (TR VCZ), dome, sealing type (TR VC3) or dome, polyethylene dust cover type (TR VC8). 3.2.3 m. 3.2.3.1 Core fit. Unless otherwise specified (see 7.3), cores shall conform to the applicable reference (see 2.1). Cores suppli

24、ed for replacement shall fit as the ori cores without modification of cores or valves. 3.2.3.2 Deflation bv core. Cores shall be so constructed that when installed for use, tire pressure can be decreased by depressing the core plunger pin. It shall not be necessq to remove the core from the valve to

25、 deflate the tire or tube. 3 2.3.3 Core plunger pin height. Core design shall be such that when the core is properly installed, the tip on the core plunger pin shall position 0.035 h. (0.89 mm) below to 0.010 in. (0.25 mm) above the valve lip. 3.2.3.4 Spud. Unless otherwise specified (see 7.3), spud

26、s shall conform to the applicable reference (see 2. i). 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-52bll 9999974 0175132 211 Type Class I 1 2 3 4 5 A-A-526 1 1 Pounds 1 O0 300 1 O0 1 O0 100 3.2.3.5 Grommet. Unless otherwise specified (see

27、 7.3), the grommet design characteristics shall be capable of meeting its intended purpose and material should be Ethylene Propylene Dyne Monomer (EPDM) or equivalent. m 3.2.3.6 Nut. hexagon plain. Unless otherwise specified (see 7.3), the nut design shall be capable of its intended purpose. 6 1 O0

28、1 300 2 300 3.3 Phvsical properties. 4 3.3.1 Valves. 300 3.3.1.1 Tensile strength. Valves with rubber bases shall conform to the pull values of Table I. 3.3.1.2 Tensile strend test. To determine conformance to 3.3.1.1, valve stems specified in table I shall be pulled to destruction at the rate of 5

29、inches per minute in a tensile machine. In preparation for the test, the cap shall be removed and the valve stem shall be my and completely mated in the threaded adapter of the pull mechanism while the valve assembly base is clamped into a furture with an adapter ring. The adapter ring shall have an

30、 inside diameter of 0.75 in. 1.9 1 centimeters (cm) for type I, classes 3 and 4 valve assemblies, and 1.25 in. (3.18 cm) for type I, classes 1, 2, 5, and 6 valve assemblies. 3.3.1.3 Valve stem base closure. Valves, type I, class 5 and 6, shall have sufcient metal groove to effect a mechanical lock o

31、f the rubber in the groove. There shall be no cracks or flaws in the stem waii. 3.3.1.4 Crack resistance of rubber. Valves, type II, class 1, shall have no cuts or cracks in the rim-hole sealing area. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,

32、- A-A-52bLL 5999974 0175133 158 A-A-5261 1 3.3.1.5 Distortion resistance. Valves, type I, classes 1 and 5, shall be of a strength and hardness as to prevent distortion or other damage when subjected to proper field mounting and servicing methods. 3.3.1.6 Valve bendability 3.3.1.6.1 Hand-bendable val

33、ves. Valves, type I, class 1, style B, and class 5, style B, shall permit hand-bending once without cracking. 3.3.1.6.2 Tool-bendable valves. Valves, type I, class 2 (except TR 70), and TR 87 from class 3, stye A, shall permit tool-bending once without cracking. 3.3.1.6.3 Factory-bent valves. Valves

34、, type I, classes 4 and 7, and type II, class 3, 6, and 8 shall not be cracked. 3 -3.1.7 Hardness of valve rubber covers and bases. The shore A durometer hardness of unaged rubber compound shall be not less than 55 nor more than 70 for tube applications. The Shore A durometer hardness of the rubber

35、shall be not less than 60 nor more than 70 for snap-in valve applications. Shore A hardness shall not increase to more than 75 for valves aged in storage up to 2 years. 3.3.2 SDuds. 3.3.2.1 Hardness of rubber bases. The durometer hardness of rubber compound of type III, class 1,2, and 4 spuds shall

36、be the same as for valves with rubber bases. 3.3.2.2 Tensile strenah. Type III, class 1,2 and 4 spuds shall conform to the pull value of table 1. 3.3.2.3 Tensile strenah test. To determine conformance to 3.3.2.2, spuds shail be pulled to destruction at the rate of 5 in. per minute in a tensile machi

37、ne. In preparation for the test, the body thread shall be firmly and completely mated into the threaded adapter of the puli mechanism while the base is clamped into a fixture with an adapter ring. The adapter ring shall have an inside diameter of 1-1/2 in. (3.81 em). 3.3.2.4 Base closure. Spuds, typ

38、e my class 1,2, and 4, shall have sufficient spinning or closing of the inner wd of the metal groove to effect a mechanical lock of the rubber in the groove. There shall be no cracks or flaws in the spud wall. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro

39、m IHS-,-,-A-A-52611 9999974 OL75L34 09Y A-A-5261 1 3.4 Performance. 3.4.1 Valves. Valves having type V, class 2 cores as part of their assembly, shali allow an air flow input rate of at least 4.3 cubic feet per minute (fi/min) (122 liters per minute &/min) at 100 pounds per square inch gage (psig) 6

40、89 kilopascals (Wa) of air pressure. Valves having type V, class 3 cores as part of their assembly, shall allow an airflow input rate of at least 8 f13/min (226 L/min). 3.4.2 Caps. Caps TR VC2 and TR VC3 shall pneumatically seal the mouth of the valve stems and demonstrate no visible leakage of air

41、while under 100 psig (689 kPa) of air pressure for 30 seconds. In addition, the TR VC8 shall be capable of withstanding finger tightening with no effects in the performance of its intended service. 3.4.3 Cores. 3.4.3.1 Air flow input rate. Valve cores, type V, class 2, shall allow an airflow input r

42、ate of at least 4.3 filmin (122 L/min) at 100 psig (689 kPa) of air pressure. Valve cores, type V, class 3, shall allow an airflow input rate of at least 8 fi3/min (226 L/min) at 100 psig of air pressure. 3.4.3.2 Pressure retention. Unless otherwise specified, valve cores, type V, shall meet the fol

43、lowing pressure retention requirements for at least one minute without visible leakage: Classes 2 and 3 - 25 psig (172 Ha) and 200 psig (1379 Wa). 3.5 Environmental requirements. 3.5.1 Low temperature leakage. Unless otherwise specified (see 7.3), valve cores, type V, shd meet the following low temp

44、erature and pressure requirements Without leaking in excess of one bubble per minute with valve mouth in down position: Classes 2 and 3 - -40F (-40C) at 200 25 psig (1379 i34 Ba). 3.5.2 High temperature leakage. Unless otherwise specified (see 7.3), valve cores, type V, shall meet the following high

45、 temperature and pressure requirements without leaking in excess of one bubble per minute with valve mouth in down position: Class 2 - Class 3 - 200F (93C) at 200 25 psig (1379 -4 Wa). 165F (74C) at 200 25 psig (1379 +34 Da). 7 Provided by IHSNot for ResaleNo reproduction or networking permitted wit

46、hout license from IHS-,-,-_- - A-A-52bll 9999974 0175135 T20 A-A-5261 1 3.6 Dimensions. Unless otherwise specified (see 7.3), dimensions for valves, caps, cores, and spuds shall conform to the applicable reference (see 2.1). 3.7 Applicability of fittings. Applicability of cores, caps, and spuds shal

47、l be as outlined in the applicable reference (see 2. i). 3.8 Identification marking. As a minimum, each valve shall be stamped, molded, or otherwise permanently and legibly marked with the T&RA designation number (see 7.3). 3.9 Color. Unless othewise specified (see 7.3), the color of valves shall be

48、 in accordance with the manufacturers standard practices. 4. REGULATORY REQUIREMENTS. 4.1 Recovered material. The offerorkontractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 5. QUALITY

49、ASSURANCE PROVISIONS. 5.1 ResDonsibilitv for inspection. The contractor is responsible for the performance of all inspections (examinations and tests). 5.2 Product conformance. The products provided shall meet the salient characteristics of this CID, conform to the producers own drawings, specifications, standards, and quality assurance practices, and be the same product offer