ELECTROMAGNETIC VALVE Russian patent published in 1994 - IPC

FIELD: pipeline valves and fittings. SUBSTANCE: valve housing has main seat communicating with outlet channel. Installed over main seat are piston servo and main shutoff member with charging hole through which inlet channel communicates with control space. Control seat is made in center of main shutoff member and is overlapped by control shutoff member connected with armature of shell-type electromagnetic drive. Drive is connected to housing cover from inside and is arranged inside servo piston to form calibrated clearance between inner wall of piston and electromagnet case. Control space communicates with inlet channel through this clearance. EFFECT: enlarged operating capabilities. 1 dwg