MAGNETIC VALVE, CONTACTOR UNIT WITH AIR-OPERATED DRIVE USING MAGNETIC VALVE, UNIT OF VALVE CONTROLLING AIR CURRENT Russian patent published in 2000 - IPC

FIELD: contactor systems for electric circuits. SUBSTANCE: contactor unit incorporates air- operated drive coupled by means of driving link to contact lever to open and close one pair of contact tips as minimum, magnetic valve set between source of pressure operating air and air-operated drive. Valve includes inlet air conduit, outlet air conduit and exhaust air conduit. Restoring valve seats are installed in valve for air-tight match with metal seats on separable rod of valve. According to one version filter unit for air filtration is manufactured as one unit. In agreement with another version air filter built into line is coupled to inlet conduit. EFFECT: design of magnetic valve with improved sealing and decreased leak. 15 cl, 5 dwg