In the various types of valves, gate valves is one of the most widely used. Gate Industrial Valves is closed ( Ram) Along the channel mainly for cutting medium, that is, use full open or full close. General gate valve for throttling. It can be used in high temperature and high pressure, and can be used in a variety of different media. Gate valves are generally not to enter the mud, viscous fluid pipeline. The gate valve gate, linear motion, with the stem called lifting lever gate ( Also called rising stem gate valves) 。 Usually in lifting lever on the trapezoidal thread, through the Industrial Valves at the top of the nut and guide groove on the valve body, the rotation movement into linear motion, which is the operating torque thrust into operation. Some valve, the Industrial Valves stem nut in ram, hand wheel rotate to drive the valve stem, and make the damper to ascend, the valve is called rotating lever gate or non-rising stem gate valves. Gate valve has the following advantages:

1. Fluid resistance is small;

2。 Opening and closing the required torque is small;

3。 Can be used in medium flow in two direction of ring network management way, that is to say, the flow of medium is not restricted;

4。 Wide open, the sealing surface erosion by working medium is smaller than globe valves;

5。 Form is simple, manufacture good manufacturability;

6。 Smaller structure length;

due to the gate and has many advantages, so the use is widespread. Usually nominal size & ge; (the pipe as a device to cut off the medium are gate valves, even in some small diameter on the road, still retain part of the gate.

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