F375, F377, F378 Spring set demand control valve

These demand regulators are basically the same units as the Meggitt air set valves except they utilize an adjustable spring to achieve control pressure. These controls can be used on vehicle applications where air pressure is not available. The addition of a solenoid valve (modification J, K or L [F375 only]) will add electrical deadman control to the valve. The valves can also be equipped with an additional air pilot valve, removing any requirement to have regulated air or air pressure gauges.

• Working pressure - 200 PSI
• Closure times:
dead man release - 0.8 sec
[4.0-5.0 sec on modifications
H, J, or K (F375 only)]
• Aircraft valve response -
0.75 sec
• Adjustable feature
[optional with modification
“AH” (F378) or “AN”
(F377) only]
• Opening times - 10 to 50
seconds (set at 23 sec)
• Pressure control range -
30 to 60 PSI (70 to 110 PSI
on “X” modification)
• Peak surge pressure -
275 PSI