VALVE Russian patent published in 2008 - IPC F16K3/24 F16K1/10 

FIELD: valving systems.

SUBSTANCE: valve comprises flange provided with the outlet opening and ring conical seat. The seat is made of inner truncated cone. The lid with the ring collar on its outer surface and cylindrical projection on its inner surface is mounted in the top section of the housing with the use of a spacer. The face of the cylindrical projection is provided with a sealing unit secured to the projection by means of clamp and bolt. The cylindrical projection has a dummy hole in the side facing the ring collar of the lid. The dummy lid receives the spindle of the drive. The spindle is connected with the top cylindrical part of the valving member by means of a pin that passes through the side openings made in the cylindrical projection. The inner diameter of the top cylindrical part of the valving member is approximately equal to outer diameter of its bottom cylindrical part. The sealing unit embraces the piston with an opening plugged with a threaded plug, seals and spring with bearing ring. The space formed inside the valving member by the surfaces of the piston and cylindrical projection of the lid is filled with an antifreeze. The valving member is made for permitting reciprocation along the inner side of the housing. The outer face edge of the bottom cylindrical section of the valving member is in a contact with the conical seat.

EFFECT: enhanced reliability.

3 dwg