DEVICE FOR EMERGENCY CUTTING OFF PIPE LINES FOR HIGH- TEMPERATURE HEAT CARRIER Russian patent published in 1996 - IPC

FIELD: valving. SUBSTANCE: inner cylinder, valving member, and actuator are axially alined in the vertical housing. The bottom end of the cylinder has the bottom and sealing member. A separator is secured inside the bottom end of the cylinder. Opposite to the separator are passageways that are made in the wall of the inner cylinder and connect the ring space between the housing and cylinder with the separator. A guide device is opposite to the passageways inside the ring space. The guide device is connected with the valving member through perforated plates. The valving member is made up as the outer cylinder with a sealing member for permitting interaction with the sealing member of the inner cylinder. EFFECT: enhanced reliability. 4 cl, 2 dwg