The comparative advantages and disadvantages of the gate valve

The gate valve is the down part (disc) along the vertical direction of the channel axis to move the valve in the pipeline as of cuts through the media, that is fully open or fully closed. In general, the gate valve can not be used as regulate the flow. It can be applied to the the cryogenic pressure can be applied to high temperature and high pressure, according to the type of material of the valve. Gate valve generally not used for the transport mud and other media pipeline.shut off solenoid valve
Advantages:
① fluid resistance is small;
The ② opening and closing of the desired torque is smaller;
③ can be used the ring NM road in the medium to flow in two directions, which means that the flow direction of the medium is not restricted;
④ fully open, the sealing surface erosion of the working medium than globe valves;
(5) body structure is relatively simple, good manufacturing processes;
The ⑥ structure relatively short length.
Disadvantages:
(1) Dimensions and opening height, the space required for installation;
(2) in the opening and closing process, the sealing surface relative friction, wear, even at high temperatures, is easy to cause abrasions;
(3) general gate valve has two sealing surface, to give processing, polishing and maintenance of a number of difficulties;
(4) open and close for a long time.3 way air valve