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|  MIL-V-81995/3(AS)
Rate of Pressure Rise: The initial pressure rise shall be limited
to 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 0.5
second maximum.
Pressure Drop:
Pressure drop shall not exceed 0.5 psi.
Leakage: Internal shall not exceed 0.3 lb/rein and total shall not
exceed 0.5 lb/rein when subjected to inlet air at 172 psig at 680 30F
(360 17C).
Altitude:
a,
Maximum operating:
10,000 ft
b.
Maximum nonoperating:
80,000 ft
Ambient Temperature Range:
a.
Operating:
-65 to +250F (-54 to +121C)
b.
Nonoperating:
-65 to 370F (-54 to 188C) (with 5-minute
transients of 425F/2180C)
Flight and Ground Loading:
a.
Flight maneuvering:
30g
b.
Shear:
50 lb
c.
Axial :
100 lb
d.
Moment:
300 in-lb
Vibration:
See Figure 2.
Military Part Number:
The military part number of the valve shall
be M81995/3.
Preparing Activity
Navy-As
(Project No. 2995-N030)
2
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