ELECTRIC PNEUMATIC VALVE Russian patent published in 2015 - IPC F16K31/02 

FIELD: electricity.

SUBSTANCE: in the electric pneumatic valve the inlet and drainage sealants are made from one side of the valve, facing towards the piston. The drainage channel is brought out of the cavity located between piston steps. In the small step of the piston the channel interconnecting the outlet and drainage channels is made. The drainage seat is made at an end face of the small step of the piston. Meanwhile the full stroke of the piston is equal to the sum of its stroke for shutdown of the drainage channel from the closed position stopper until contact of the drainage seat with the valve and the stroke, made together with the valve, for opening of the inlet channel from the seat in the housing against the open position stopper.

EFFECT: decrease of level of vibration and noise characteristics at the expense of exception of an overflowing of a working medium under the pressure from the inlet a drainage, reduction of mass-dimensional characteristics, saving of reserves of gas and cylinders of gas supply system.

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