The hand wheel, handle operation of the pipe stop valve can be installed in any position of the pipeline.
Handwheel, handle and Wei move mechanism, not allowed for hoisting.
The flow of the medium should be consistent with the direction indicated by the valve body.
Bellows Gate Valve, also known as Jummen, is the most widely used one kind of valve, it is widely welcomed, because of the opening and closing process between the sealing surface friction small, more durable, open high, easy to manufacture, easy to maintain, not only applicable to the medium and low pressure, but also applicable to high pressure. Its closed principle is to rely on the pressure of the valve, so that the disc sealing surface and valve seat sealing surface closely fit to prevent media circulation.
Bellows Gate valve only allows the medium one-way flow, the installation of directional. Its structure length is larger than gate valve, at the same time, the fluid resistance is big, long run, the seal reliability is not strong.
Bellows Gate valves are divided into three categories: straight-through, right-angle-type and DC-type oblique cut-off valve.
Bellows valve Open, the opening height of the disc, the nominal diameter of the $number, the flow has reached the maximum, indicating that the valve has reached full open position. Therefore, the full open position of the globe valve should be decided by the disc stroke.