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MIL-DTL-87255 Valves, Pressure, Anti-G Suit, High FlowThis specification covers a high-flow, pressure regulating valve for inflating anti-G suits and providing a sense line signal for a g-compensated oxygen regulator \(if applicable\). It also includes details of inlet and outlet fittings required to interface the valve to specific aircraft.

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MIL-DTL-87255A(USAF)
FIGURE 4. Anti-g valve outlet pressure vs Gz.
3.5.4  Anti-chatter.
The valve shall not chatter (see 4.5.5 and 6.4.2).
3.5.5
Outlet pressure response
3.5.5.1  Response time.
When the acceleration force is being applied by a centrifuge or an aircraft, the outlet pressure
shall be in accordance with table I (see figure 4) within 2 seconds after the application of the
force. When the acceleration force is being decreased, the pressure shall be in accordance
with table I (see figure 4) within 5 seconds after decreasing the force. Additionally, the outlet
pressure shall change in a smooth continuous manner without oscillations or step responses.
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