NORMALLY OPEN ELECTRO-MAGNETIC VALVE Russian patent published in 2011 - IPC F16K31/02 F16K3/24 

FIELD: machine building.

SUBSTANCE: normally open electro-magnetic valve consists of case with flow through part, of gate, of electro-magnetic drive with magnetic conductor, of seat, of sealing dividing tube, of core connected with gate and of retracting spring. The gate is installed in an orifice of the flow through part of the case. It is of tubular form with wedge-like edges and it is equipped with a non-metal circular packing. The gate is connected with the core of the electromagnetic conductor through rods. The seat is positioned in a lower part of the dividing tube over the gate. An additional spring located on the rod under the gate is set for contraction of the gate to the seat.

EFFECT: normally open valve with electro-magnetic drive of pulling type with gate unloaded by one-side action of working medium; reduced complexity of its manufacture.

3 cl, 2 dwg