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Gate Valve The Direction Of Motion Is Perpendicular To The Direction Of The Fluid

Gate valve is used to open and close the gate plate and move along the vertical axis of the valve seat to achieve the opening and closing operation of the valve. The gate valve can only be fully open and fully closed, the opening and closing parts is the gate, the direction of movement and the fluid direction perpendicular to the square shape of the gate valve two sealing surface to form a wedge, wedge angle with the valve parameters vary, usually 5 °, Not high for 2 ° 52 '. Improve the process of the valve, to make up the sealing surface angle in the processing of the deviation, this gate is called the elastic gate.

When the valve is closed, the sealing surface can only rely on the media pressure to seal, that is, only rely on the media pressure to the gate of the sealing surface to the other side of the valve seat to ensure that the sealing surface of the seal, which is self-sealing. Most of the gate valve is forced to seal, that is, when the valve is closed, to rely on external force forced to the gate pressure to the valve seat to ensure that the sealing surface of the seal.

Movement mode: gate valve with the stem with a straight line movement, called also called the gate valve. Usually in the lift bar with trapezoidal thread, through the top of the valve nut and the valve body on the guide groove, the rotary motion into a linear motion, that is, the operating torque into the operating thrust. When the valve is opened, when the lift height is equal to 1: 1 times the diameter of the valve, the fluid channel is completely open, but this position can not be monitored during operation. The actual use of the stem is the vertex as a sign, that is, the location of the open, as its full open position. In order to consider the temperature changes appear locking phenomenon, usually in the open to the vertex position, and then back 1 / 2-1 lap, as the full valve position. Therefore, the valve fully open position, according to the position of the gate (ie stroke to determine. Some gate valve stem nut is located on the gate, hand wheel rotation to drive the stem rotation, leaving the gate lift, this valve called Rotating rod gate valve or called dark bar gate valve.

Gate valve opening and closing parts is the gate, the direction of movement of the gate and the fluid direction perpendicular to the gate valve can only be fully open and fully closed, can not be adjusted and throttling. The gate has two sealing surfaces, the two most commonly used mode gate valve sealing surface of the wedge, wedge angle with the valve parameters vary, usually 5 °, medium temperature is not high when the 2 ° 52 '. Wedge gate valve can be made into a whole, called the rigid gate; can also be made to produce a trace of the deformation of the gate to improve its craft, to make up the sealing surface angle in the processing of the deviation, Plate is called elastic gate. When the gate valve is closed, the sealing surface can only be sealed by the medium pressure, that is, by means of the medium pressure to press the sealing surface of the gate to the other side of the valve seat to ensure that the sealing surface of the seal, which is self-sealing. Most of the gate valve is forced to seal, that is, when the valve is closed, to rely on external force forced to the gate pressure to the valve seat to ensure that the sealing surface of the seal. Gate valve with the stem for a straight line movement, called the lift bar gate valve is also called the gate valve. Usually in the lift bar with trapezoidal thread, through the top of the valve nut and the valve body on the guide groove, the rotary motion into a linear motion, that is, the operating torque into the operating thrust. When the valve is opened, when the lift height is equal to 1: 1 times the diameter of the valve, the fluid channel is completely open, but this position can not be monitored during operation. The actual use of the stem is the vertex as a sign, that is, the location of the open, as its full open position. In order to consider the temperature changes appear locking phenomenon, usually in the open to the vertex position, and then back 1 / 2-1 lap, as the full valve position. Therefore, the valve fully open position, according to the location of the gate that is to determine the trip. Some gate valve, stem nut set on the gate, hand wheel rotation to drive the stem rotation, leaving the gate to lift, this valve is called the rotary bar gate valve or called the dark bar gate valve.

main feature 

Light weight: the body made of high-grade black cast iron, the weight of the traditional valve weight reduction of about 20% to 30%, easy installation and maintenance.

Flat gate: the traditional gate valve is often washed in the water after the external objects such as stone, wood, cement, iron, debris and other silt in the bottom of the groove, easy to cause close to the formation of water leakage phenomenon, The bottom of the elastic seat seal valve with the same pipe with the flat design, not easy to cause debris deposition, so that fluid unimpeded.

The overall package of plastic: the use of high-quality rubber plate for the whole body, outsourcing plastic, the European first-class rubber vulcanization technology makes the curing of the gate to ensure accurate geometric size, and rubber and ductile castings and then firmly, Elastic memory good.

Casting body: the valve body with precision casting, accurate geometry makes the valve body without any finishing to ensure that the valve seal.