ZZ-V-25 Valves And Valve Spuds Caps And Cores, Pneumatic Tire \(S/S By A-A-52611\)

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10

ZZ-V-25E

3.4 Marking. As a minimum each valve shall be stamped, included, or otherwise permanently and legibly

marked with the T&RA designation number. Other marking, as required by Military Standards, shall be

applied when Military Standards are referenced (see 6.2).

3.10 Workmanship. Vales and their components shall the requirements listed herein and, in

covers or bases. incomplete or damaged threads, poor adherence of gum stock, and protective coverings to

bottoms of rubber bases, valve holes and drillings not clear and incorrect valve bends.

QUALITY ASSURANCE PROVISIONS

4.1 Responsibililty for inspection. Unless otherwise specified in the contract or purchase or&r, the

supplier is responsible for the performance of ail inspection requirements as specified herein. Except as

otherwise specified in the contract car order, the supplier may use his own or any other facilities

suitable for the performance of the inspection requirements specified herein, unless disapproved by 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 that supplies and services conform to

pres.cm.bee? requirements

4.2 Preproduction inspection. When specified (see 6.2) , preproduction samples shall be furnished for

preproduction inspectio and testing as f 01 lows:

(a) Valves:

( 1 ) Ten valves of one type and class shall be furnished for each type and class of valve, and at

least one of each of any others of the same type and class. Whenever type I, class 1, style

B, class 2, class 3, style A, or class 5, style B valves are furnished, not less than three

valves each will[ be furnished to provide for bending tests.

(2) Two rubber specimens of each rubber compound used shall be furnsihed when applicable for

durameter hardness test. Specimens submitted shall be at least 1" square by 1 /4" thick and

shall be cerified b, the supplier as being exactly the same as, or having same from the

same batch that was used on the other products he has submitted for testing.

(b) Caps - Fifteen caps shall be furnsihed of each class .

(d) Spuds - Four valve spuds shall be furnished of each class. Two rubber specimens as specified

herein, shall be furnished for durameter hardness test, when applicable

The preproduction sanples shall be representative of the units proposed to be f furnished under contract.

Preproduction inspection shall be conducted by the contractor under supervisior of the Government, and

shall consist of examination for defects listed in Table II, and testing as specified in Tables IIIA

through IIID, as applicable, in the order listed The contractor shall submit the first preproduction

inspector test report, verified by a Government representative as directed by the conrtacting officer

(see 6.2).

4.3 Quality conformance inspection.

4.3.1

Sampling for valves, spuds, caps, and cores.

4.3.1.1 Lot formation Unless otherwise specified (see 6.2) , a lot shall cosist of all valves,

spuds, caps, or cores from an identifiable production period from one manufacturer, submitted at one time

for acceptance

4.3.1.2 Sampling for quality, conformance examination. Samples for quality conformance examination

shall be selected in accordance with MIL-STD-105.

4. 3.2 Examination inspection for valves, spuds caps, and cores

4.3.2. Acceptable quality, levels. Each valve, spud, cap, or core, as applicable, selected in

accordance with 4.3.1,2, shall be examined for conformanace to the following acceptable quaility levels

(AQL) on the basis of percent defective

Classification

AQL

Major

2.5

4.0

Minor