MIL-PRF-83772C
AMERICAN SOCIETY FOR QUALITY (ASQ)
ASQ-Z1.4
- Sampling Procedures and Tables for Inspection by
Attributes
(ASQ documents may be obtained online at https://www.asq.org/ or from American Society for
Quality, P.O. Box 3005, Milwaukee, WI 53201-3005 or 600 North Plankinton Avenue,
Milwaukee, WI 53203 USA.)
2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event
of a conflict between the text of this document and the references cited herein (except for related
specification sheets), the text of this document takes precedence. Nothing in this document,
however, supersedes applicable laws and regulations unless a specific exemption has been
obtained.
3. REQUIREMENTS
3.1 Design and construction. The hose assembly shall be designed and constructed as
specified herein for use with cryogenic fluids such as liquid oxygen and liquid nitrogen (see 6.4).
3.1.1 Hose assembly. The hose assembly shall be capable of transferring oxygen or
nitrogen through the hose and out the filler valve, as a liquid, at a minimum rate of 1 gallon per
minute (gpm). The hose assembly shall conform to the weight, size, flexibility and other physical
characteristics listed below:
a. The length of the hose assembly shall be 10 feet ±1 inch.
b. The outer diameter of the outer covering shall be 1.25 inches maximum. There shall
be no sharp or frayed edges.
c. The weight of the hose assembly shall not exceed 7.20 pounds.
d. One end of the hose assembly shall terminate in a 0.75 inch National Pipe Thread
(NPT) standard female fitting 14 threads per inch (tpi). The other end shall terminate in 1 inch
NPT standard male fitting with 11.5 tpi. Guidance for pipe threads is provided in ASME
B1.20.1. Both end fittings shall have hexagonal-type outer surface.
e. The hose assembly shall be constructed such that the hose shall not suffer damage if
handled or installed with bends whose radius is greater than or equal to seven inches.
f. Provided that all other requirements of this specification are met, reclaimed materials
may be used.
3.2 Performance. In addition to the design requirements, the hose assembly shall meet
the performance requirements listed below.
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