Gate valve is an opening and closing member of the gate, the movement direction of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, can not be used for regulation and throttling. Gate valve through the valve seat and gate contact for sealing, usually the sealing surface will be surfacing metal materials to increase wear resistance, such as surfacing 1Cr13, STL, stainless steel and so on. There are rigid gate and elastic gate, according to the different gate, gate valve is divided into rigid gate and elastic gate.

Product features

1, small flow resistance. Medium channel inside the valve body is straight through, the medium into a straight line flow, flow resistance is small.

2, opening and closing more labor-saving. Is compared with the cut-off valve, because whether open or closed, the gate movement direction is perpendicular to the direction of media flow.

3, the height of a large, long opening and closing time, the opening and closing stroke of the gate is larger, lifting is carried out through the screw.

4, water hammer phenomenon is not easy to produce.

5, the medium can flow in any direction to both sides, easy to install. Gate valve channel is symmetrical on both sides.

6, simple shape, short structure length, good manufacturing process, wide range of applications.

7, the channel is smooth, flow resistance is small, the sealing surface is made of stainless steel and hard alloy, long service life, reliable sealing, light and flexible operation.

Execution standard

Design and manufacturing: API600, GB/T 12234

Structure length: ASME B16.10, GB/T 12221

Connecting flange：ASME B16.5、GB/T 9112～9124、HG/T 20592、HG/T 20615、JB/T 79

Butt-welding end: ASME B16.25, GB/T 12224

Inspection and testing: API 598, GB/T 26480