Valves

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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137/108

F16K 11/00 (2006.01) F16K 1/40 (2006.01) G05D 16/06 (2006.01)

Patent

CA 1081583

ABSTRACT A fluid control valve, especially intended as a pilot valve in pneumatic control systems, in which the controlled flow path is provided by the gaps between adjacent coils of a helical spring. The flow direction is from the outside to the inside of the spring; this allows the valve to seal against high pressures, since the spring will be helped to remain closed by the pressure forces acting thereon.

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