MIL-R-17852C(AS)
3.6.4 Pressure relief. The pressure relief valve, when tested as
specified in 4.6.5, shall open at 120 ± 10 DSig and shall allow a mininimum
flow of 80 lpm at 130 psig through the valve. The pressure relief valve
shall reseat at 110 psig and show no evidence of leakage.
3.6.5 Proof pressure. The reducer, when tested as specified in
4.6.6, shall show no evidence of leakage or distortion.
3.6.6 High and low temperature operation. The reducer, when tested
as specified in 4.6.7 shall operate without failure and shall not show
any evidence of mechanical or material failure,
3.6.7 Vibration. The reducer, when tested as specified in 4.6.8,
shall not show any evidence of mechanical or material failure.
3.6.8 Endurance (Type I). The on-off shut off valve, when tested as
specified in 4.6.9, shall operate satisfactorily.
3.6.9 Oxygen bomb test. The reducer, when tested as specified in
4.6.10, shall not ignite and there shall not be any evidence of charring
or deterioration.
3.7 Interchangeability. All parts having the same manufacturer's
part number shall be functionally and dimensionally interchangeable.
3.8 Dimensions.
3.8.1 Type I. The reducer shall have maximum overall dimensions of
4-1/4 by 1-1/2 by 1-1/2 inches.
3.8.2 Type II. The reducer shall have maximum overall dimensions of
3 by 2-1/4 by 1-1/2 inches.
3.9 Weight. The weight of the pressure regulating valve shall riot
exceed 0.4 pounds.
3.10 Threads.
Machine screw threads shall be in accordance with MIL-
3.10.1 Screw.
S-7742.
Pipe threads shall be in accordance with MIL-P-7105.
3.10.2 Pipe.
3.11 Finish. Aluminum and aluminum alloys shall be anodized in
accordance MIL-A-8625 or MIL-C-5541.
3.12 Identification of product. The valves shall be marked for
identification in accordance with MIL-STD-130, except that the National
Stock Number shall be omitted from the nameplate.
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