MIL-DTL-24402/1A
TABLE II. Bypass relief valve setting.
Leakage rate
Test fluid
(ounces/min [mL/min])
Test condition
Pressure (lb/inē)
temperature
(°F [°C])
MIL-PRF-17331
(a) Cracking pressure
(1) Qualification
150 minimum
104 (40)
0.34 (10) minimum
maximum
(2) Conformance
Not more than 5 lb/inē
68 to 140
0.34 (10) minimum
higher than the actual
(20 to 60)
cracking pressure for the
qualification assembly.
(b) Full flow
200 maximum
104 (40)
N/A
(qualification only)
maximum
(c) Reseat pressure
(1) Qualification
120 minimum
104 (40)
0.07 (2) maximum
minimum
(2) Conformance
120 minimum
68 to 140
0.07 (2) maximum
(20 to 60)
(2) Fatigue impulse rating. The filter assemblies with Size B elements shall have a fatigue impulse rating
of 3,000 lb/inē in accordance with NFPA T2.6.1.
(3) Proof pressure. The filter assemblies shall withstand a proof pressure of 4,500 lb/inē.
(4) Housing pressure drop. At the maximum rated flow with MIL-PRF-17331 fluid, the housing pressure
drop with a minimum restriction dummy element installed shall be not greater than 25 lb/inē
differential.
(5) Burst pressure. The non-fatigue rated filter assemblies with Size C elements shall withstand a burst
pressure of 7,500 lb/inē in accordance with NFPA T2.6.1.
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