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|  MIL-V-81995/6(AS)
Regulating Pressure: 48 3 psig at Inlet pressures of 65 psia to 105 psia
and 48 4 psig up to 175 psia at airflows from 50 lb/rein to 200 lb/rein.
Flow. The flow rate for all test conditions shall be limited by a fixed
orifice or nozzle which will produce an airflow of 150 3 lbs/min. at orifice
and nozzle inlet conditions of 48 3 psig and 455 lOF.
Rate of Pressure Rise. The initial pressure rise shall be limited to a
maximum of 22 psi/see during the first 0.5 second after the first indication
of pressure rise and thereafter the pressure rise shall be smooth and at a
positive rate.
Opening and Closing Times: Open 5 seconds maximum; close 1.5 seconds
maximum and 0.8 second minimum, at 37 psig inlet pressure.
Pressure Drop.
Pressure drop shall not exceed 1.25 psid at a flow of 150
lbs/min.
Leakage. Internal and external leakage combined shall not exceed 1.36
lb/rein when the valve is closed. External and bleed leakage combined, when
the valve is regulating, shall be 1.81 lbs/min maximum.
Altitude:
Maximum operating: 30,000 ft.
a.
Maximum non-operating: 55,000 ft.
b.
Ambient Temperature Range:
a.
Operating:
-65 to +250F.
Non-operating: -65 to +300F.
b.
Ambient Temperature Range FSR:
a.
Operating ground:
-65 to +135F.
Operating flight 2 min. max: -65 to +160F.
Non-operating:
-80 to +203F.
b.
Flight and Ground Loading:
Flight maneuvering: 30g.
a.
b. Shear: 50 lb.
100 lb.
Axial:
c.
d. Moment: 300 in-lb.
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