Knowledge about Low Temperature Gate Valve
Classification of low temperature gate valve:
According to the sealing surface, it can be divided into wedge gate valve and parallel gate valve, while wedge gate valve can also be classified into: single plate type, double plate type and elastic plate type. For parallel gate valve, it has single plate type and double plate type, too. And according to the threaded position of stem, low temperature gate valve can be divided into two types: rising stem gate valve and dark rod gate valve.
Advantages of low temperature gate valve:
Small fluid resistance.
Small effort to open and close the valve.
Unrestricted flow direction of media, without reducing pressure.
Simple structure, good manufacturing processes and wide range of application.
Disadvantages of low temperature gate valve:
Easy to cause erosion and abrasion between the sealing surface, difficult maintenance.
Large size, long time to open and close.
More complex structure design.
Installation and maintenance notes:
Hand wheel, handle and drive mechanism are not allowed to lift, and forbid the collision.
Dual gate valve should be mounted vertically (stem in a vertical position and hand wheel at the top).
If a gate valve is installed with drive mechanism, then you should install it according to the provisions of product instructions.
For frequently switch, you need to lubricate the valve at least once a month.