A-A-54040
Sampling for tests. Sampling for tests, including dimensional test, shall be conducted in accordance with MIL-STD-105, with an AQL of 1.0 (percent defective) and an inspection level of II. The unit of product for test purposes shall be one regulator.
Tests. Tests shall be conducted to determine compliance with specification requirements. Where feasible, the same sample shall be used for the determination of two or more test characteristics. Tests shall include, but shall not be limited to, the following:
a. Minimum pressure and flow rate and maximum pressure at regulator 50 psig outlet ports. Provide an oxygen source of 500 psig to the yoke inlet. Set the flow controller at 15 LPM. Measure the pressure at both 50 psig outlet ports (required to be between 40 and 60 psig). Measure the flow rate at both 50 psig outlet ports simultaneously (required to be at least 100 LPM).
b. Using standard laboratory testing equipment, with an oxygen supply source of 1900 to 2000 psig and the two 50 psig outlet ports occluded, measure the flow rate at the flow controller outlet port five times, once for each setting of 2, 4, 6, 10, and 15 LPM (required to be within 25 percent of marked setting).
c. Test for zero leakage at the flow controller outlet port with supply pressure to the regulator of 1900 and 2000 psig.
Metric products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, providing they fall within the tolerance specified using conversion tables contained in the latest revision of Federal Standard 376, and all other requirements of this document 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 contracting officer has the option of accepting or rejecting the product.
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