RE-USABLE START-UP VALVE Russian patent published in 2015 - IPC A62C37/08 

FIELD: machine building.

SUBSTANCE: suggested invention relates to the fire equipment. The re-usable start-up valve contains a body, control pressure source, start-up gear, shutdown piston. The body is connected by the inlet channel with the tank of the fire extinguishing fluid under pressure, on its side surface the output hole is located. The hole is tightly covered by the shutdown piston with seal. The shutdown piston is located in the inlet channel of the body. The inlet channel of the body is made cylindrical with possibility of movement in it of the shutdown piston, the shutdown piston seal is located on its side cylindrical surface. Start-up gear is made in form of the spring-loaded piston with stock. On the cylindrical surface of the shutdown piston there is groove for the stock end to fix the shutdown piston in the lock position, and above piston cavity of the piston is connected with the control pressure source (explosive charge) with possibility upon its activation of the piston movement and the shutdown piston unlocking by the stock. In the shutdown piston a throttling hole is made. The start-up gear contains manual lock. The shutdown gear contains a deforming element out of the plastic material. The body contains isolating bursting membrane installed between the shutdown piston and tank of the fire extinguishing fluid made with possibility of bursting upon the shutdown piston movement, besides the safety bursting membrane is installed.

EFFECT: re-use of the valve with minimum change of the design elements.

5 cl, 5 dwg