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How to Know working trap and control valve ?

2012-07-20


It is well known that the present valve industry is generally prosperous. And it is obvious that there are many kinds of the valve acting as an important role in the pipeline transportation. Actually, they hold their own specifications for a wide range of applicable fields. Now, comparison between the trap and the control  Valve is made in the following.

The gate valve is also called the gate valve is a widely used valves. Does it closed the gate sealing surface and the valve seat sealing surface height of smooth, consistent smooth, fit each other, can prevent flow through the media, and rely on the top die, spring, or the gate of the mold shape to enhance the sealing effect. In the pipeline from the main cut.

Its advantages are: the fluid resistance is small, open and close the province Jin, you can use two-way flow of media, non-directional, full sealing surface is not easy to erosion, the short length of the structure, not only suitable for small valves, and suitable bigger valves.

The trap, also called as the steam trap, is the valve which is usually used for network and devices. It can automatically discharge condensed water, air and other non-condensing gas and is able to prevent the leakage of the steam. In terms of the different operating modes, the steam trap is classified into three main types. Generally speaking, the working procedure of the steam trap can be inducted to introduce as follows. Firstly, the valve is correctly placed. Within the state of total opening, the condensed water would entre the valve to fill the valve body. Then, the steam is used to fill the valve body as well. As a result, the buoyancy would be gained to force the valve stem towards the valve seat until the valve is totally shut off. Then, the gas discharged would be cooled down back into the valve body. And the generally increasing condensed water is pressured to pull the valve stem to open the valve after the struggle of the pressure distance. Then, with the reducing of the pressure difference, the valve body would be down to discharge the waste water and the steam. As a result, the new cycle has begun to affect. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery ,like hammer crusher, Henan Hongxing is always doing the best in products and service.

When the equipment or piping in the steam shed trap, because the steam than the condensation of water viscosity, flow rate, Valves and valve seat asked likely to cause negative pressure, part of the steam flow into the transformer room, so the valve plate The above force is greater than the force below, so that the valves to quickly shut down. Work periodically, either automatic discharge of condensate, but also to prevent the steam escape.

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