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Page Title:
Table V. Maximum manual operating torque |
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|  MIL-V-19067A(ASG)
4.6
Acceptance test method -
4.6.1 Examination of product - Acceptance - Each valve shall be carefully
examined tO detemine conformance with the requirement of this specification, for
design} construction, weight} workmanship, identification of product, conformance
applicable drawings, and for any visible defects. The manufacturer's drawings and the
manufacturer's applicable specifications which were submitted when qualification
approval was granted, shall be used by the Inspector, as necessary, to determine that
the product submitted for acceptance under contract is identical to the item as
qualified.
4.6.2 Proof pressure - Acceptance - A proof pressure of 4,500 psi shall
applied in both the free and free and reverse-flow directions at least two successive times in
each direction and held 2 minutes for each pressure application. For the reverse-
flow direction, the poppet shall be unseated between applications of the test pressure.
There shall be no measurable external leakage, failure, or permanent set.
4.6.3
Leakage - Acceptance - This test shall be conducted at a fluid temperature
of 100F. The valve shall be tested for internal leakage by applying the pressures
listed in table III in the reverse-flow direction for a minimum period of 5 minutes each.
The poppet shall be unseated between pressure applications. For each pressure, the
leakage measurement period shall consist of the last 3 minutes of the 5-minute period.
At the 5-psi pressure, internal leakage shall not exceed three drops in the 3-minute
period. No internal leakage is permitted at pressures of either 1,000 psi or 3,000
psi. There shall be no external leakage during this test.
Control force - The force or operating moment required to manually operate
4.6.4
the valve control mechanism shall be measured with the rated pressure applied in the
reverse-flow direction. The force or operating moment shall not exceed the values
specified in table V.
TABLE V
Maximum manual operating torque
12
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