Document Type and Number:
Japanese Patent JPH0141872
Kind Code:
B2
Abstract:
The valve stem of the controlled shut-off valve has a lid and a piston movable in a cylinder. A first cylindrical chamber and a second annular chamber facing the lid are separated by a piston and connected to a low-pressure chamber by ducts extending in the housing of the shut-off valve and connecting lines connected to the ducts outside the housing. The first chamber is also connected to the inlet side of the shut-off valve via a duct extending in the housing and containing at least one control valve actuated by a control line. Closing valves are provided in the connecting lines. A throttle means having a fixed flow cross-section is disposed in the duct of the first chamber inside the housing. The duct of the second chamber has a fixed minimum cross-section.
Inventors:
KAARUHAINTSU GUROTORO
Application Number:
JP18390181A
Publication Date:
September 07, 1989
Filing Date:
November 18, 1981
Export Citation:
Assignee:
GEBURU* ZURUTSUAA AG
International Classes:
F16K31/363; F01D17/14; F16K17/20; F16K31/122; F16K31/383; F16K31/40; G21D1/02
Next Patent: JPH0141873