RESPIRATORY PULSE VALVE WITH MAGNETIC GRIPS Russian patent published in 2000 - IPC

FIELD: mechanical engineering. SUBSTANCE: valve is intended for open and closed systems, for catching of petroleum product vapors. Valve has body with pressure and vacuum gates. Valve is provided with insert-seat on which two hinged levers are mounted. Pressure plate, which serves simultaneously as seat for vacuum plate, is hinge-connected on centre of one lever. Vacuum plate pressed to seat by spring is secured on other lever. Pressure and vacuum plates are pressed to seats additionally by magnetic grips. Respiratory pulse valve makes it possible to reduce losses of product and to minimize contamination of environment. EFFECT: enhanced reliability and safety. 1 dwg