ate valve (gate valve) is a gate opening and closing parts, gate movement direction and the direction of the fluid phase vertical, gate valve can be fully open and fully closed, discomfort doorparameters vary, usually 5 degrees is not high, medium temperature is 2 degrees 52. To improve the process, make up the sealing surface angle deviations arising during processing, this gate is called the flexible gate.

The mode of motion:

The gate with the stem with a straight line

The classification of materials:

Metal material, valve lining, non metal materials

Valve closed, the sealing surface can only rely on media pressure to seal, which only rely on media pressure to seal the surface of the ram pressure to the other side of the seat to ensure the sealing surface of the seal, which is self sealing. Most of the valve is sealed by force, that the valve is closed, to rely on external pressure to force the gate to the seat, to ensure the sealing surface of the seal.

Movement: gate valve with the stem with a straight line motion.

Z41H flange wedge type gate valve, also called Ming bar gate valve. Usually in the lift rod with trapezoidal thread, through the guide groove nut valve and the valve on the top, the rotary motion into linear motion, which is the operating torque thrust into operation. Open the valve, when thegate valve lift height is equal to 1:1 times the diameter, the fluid flow channel completely, but at run time, this position is unable to monitor. Actual use, is the apex of the stem as a symbol, which means that the fixed position, as its full open position. Temperature changes appear to consider locking phenomenon, usually open to the vertex position, and then fell back to 1/2 1 circle, as a fully open valve position. Therefore, the fully open position of the valve, based on the location of gate(i.e. to determine stroke. Some valve stem nut is located at the gate, hand wheel rotation to drive the valve rod, leaving gate to upgrade, this valve is called the rotating rod valve or valve called the dark bar.

The main species: the domestic production of valve manufacturers more connections are mostly non-uniform size.

The single rigid gate valve, gate valve can be divided into:

Metal material valve: such as carbon steel valves, alloy steel valves, stainless steel valves, cast iron valves, titanium valves, Monel valves, copper alloy valves, lead alloy valves etc..

Metal body lining valve: such as rubber lined valves, lined valves, lined valves, plastic lined valves,lead lining enamel valve.

Valve non-metallic materials: such as ceramic valves, glass valves, plastic valves.