Remotely controlled valve for pressurised fluid - has cylinder sliding in casing and moved by pressure from selector device

摘要

The valve consists of a cylinder having a side opening and a top opening. The cylinder is fitted with a movable assembly consisting of a plain cylinder (2) joined to a tube having a bottom plate (6). The inner assembly is sealed with 'o' rings or flexible membranes. The cylinders are operated upwards or downwards by pressure being applied to the space (4) by the selector (13). The valve is opened by increasing the pressure in the chamber (17).