ARMY MIL-M-12971 B-1966 MECHANISM VALVE REPLACEMENT M1《M1瓣膜置换机》.pdf

1、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-12971 B(MU) (Copies of specifications, standards, drawings and pub1 ications required by suppliers in connection with specific procurement functions should be ob- tained from the procuring activit

2、y or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 Materials and components. 3,l . 1 Materials* All materials cited on Drawing DL6-15-85 or on subsidiary drawings shal I conform to the specifications I isted thereon or to the specific characteristics set forth on the drawings, 3.1.2 C

3、omponents. All components of the mechanism shall conform to the specifications and drawings listed on Drawing DL6-15-85 and subsidiary drawings, 3.2 Assembly, The valve replacement mechanism shall be assembled as spec- fied on Drawing 06=15-85. 3.3 Functioning, The valve replacement mechanism shall

4、function properly by replacing a valve under actual operating conditions when tested as specified in 4.2.4, 3.4 Workmanship, The mechanism shall be free from foreign matter (oil or grease) and damage such as dents, cracks or deformation.which could affect its use, 4, QUALITY ASSURANGE PROVISIONS 4.1

5、 Responsibility for inspection, 4,l , 1 Suppliers responsibility. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspec- tion requirements as specified herein, Except as otherwise specified, the suppl ier may utilize his own facil

6、ities or any commercial laboratory acceptable to the Government, The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1,2 Obiective evidence

7、, The supplier shall provide objective evidence acceptable to the contracting officer that the requirements of 3.1 and section 5 for which specific inspection has not been provided in this specification have been sa tisf led. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted wit

8、hout license from IHS-,-,-MIL-M-12971B 47 W 9977906 0244483 T W - MI L-M- 1 2971 B(MU) . 4.2 Regular production. 4.2.1 Lotting. A lot shall consist of the valve replacement mechanism produced by one manufacturer, from the same materials, and under essentially the same manufacturing conditions, 4.2.2

9、 Sampling. Sampling shall be conducted in accordance with MIL-STD-105. 4,2,3 Inspection. 4.2.3.1 For examination and nondestructive test. Sample mechanisms and the level A preparation for delivery thereof shall be examined in accordance with the classification of defects and MIL-STD-105. 4.2,3.2 Cla

10、ssification of defects, (a) Mechanism, valve replacement, M1 (Dwg D6-15-85). Categories Defects Acceptance standards Cri tical : 1 Functioning 4,2.4 Major: 1 o1 102 103 104 1 o5 106 107 AQL 0.65 percent defective Component missing Component incorrectly assembled We1 ding incorrect Protective finish

11、missing or Marking missing or incorrect Nameplate missing Workmanship (3.4) I incorrect Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-Mm1 a71 B(MU) 0 f 1 L r L (b) Gage El, container (Dwg D6-15-77), Defects - Categories Critical: None defined M

12、ais AQL 1 .O percent defective 101 1 o2 1 O3 104 1 05 106 107 108 109 Component missing Component incorrect Welding incorrect Frame inside dimensions incorrect Depth rod notch missing or location incorrect Convex end of clearance rod incorrect Marking missing or incorrect Protective finish missing o

13、r incorrect Workmanship (3.4) (c) Preparation for del ivery (section 5). Defects - Ca tegores Critical: None defined Majo? AQL 0.65 percent defective 1 o1 102 1 03 104 1 05 106 Component missing or located incorrectly Contents loose Wood chest incorrect Hasp or hinges function incorrectly Strapping

14、loose or missing Marking missing or incorrect 4,2,4 Funcfioning test, The valve replacement mechanism shall be clamped in position on a one-ton container. The container shall be charged with 100 to 150 pounds per square inch (psi) of air, A valve in the one-ton container shall be replaced with the m

15、echanism. During the replacement operation the mechanism shal I be observed for appl cation, adjustment, locking devices and other features for proper functioning, A simulated cylinder head may be used and the air pressure of 100 to 150 psi shall be applied directly against the valve to be replaced. a i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-