Gate Valve


Gate Valve

A gate valve, known as a sluice valve, is a valve that opens by lifting a barrier (gate) out of the path of the fluid. CENTROFLOW Gate valves made in China require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. The gate faces can be parallel but are most commonly wedge-shaped (in order to be able to apply pressure on the sealing surface).

Gate Valve

     
The opening and closing part of the gate valve is the gate. The direction of movement of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully open and closed, and cannot be adjusted and throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valve form a wedge. The wedge angle varies according to the valve parameters, usually 50, and 2°52'' when the medium temperature is not high. The gate plate of the wedge gate valve can be made into a whole body, called a rigid gate, or a gate that can produce trace deformation to improve its process and make up for the deviation caused by the angle of the sealing surface during processing. This kind of gate is called an elastic gate.

When the CENTROFLOW gate valve is closed, the sealing surface can only rely on medium pressure, that is, relying on the medium pressure to press the sealing surface of the gate plate to the seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. Most gate valves are forcibly sealed, that is, when the valve is closed, the gate plate is forcibly pressed to the valve seat by external force to ensure the sealing of the sealing surface.

The gate plate of the gate valve moves straight with the stem, which is called the lifting rod gate valve, also known as the open rod gate valve. Usually, there is a trapezoidal thread on the lifting rod, which changes the rotation movement into a linear motion through the nut at the top of the valve and the guide groove on the valve body, that is, the operating torque is changed to the operation thrust.

When the valve is opened, the lifting height of the gate is equal to 1:1 times the valve diameter, the channel of the fluid is completely unblocked, but when running, this position cannot be monitored. In actual use, the vertex of the stem is used as the sign, that is, the position that cannot be opened, as its fully open position. In order to consider the phenomenon of locking in temperature changes, it is usually opened to the vertex position and then reversed back 1/2-1 times as the position of the fully open valve. Therefore, the fully open position of the valve is determined according to the position of the gate.
         
In CENTROFLOW gate valves, the stem nut is located on the gate plate, and the handwheel rotates to drive the stem to rotate and lift the gate plate. This kind of valve is called a rotary rod gate valve or a hidden rod gate valve.





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  • CENTROFLOW Forged steel Flange gate valve is a kind of gate valve moving towards to the vertical direction of the centre line of the passage. It is mainly used for shut-off function in the medium of pipeline for high-pressure applications and known as its strength. These Forged steel gate valve available for installation in refineries, chemical plants, petrochemical plants, oil industry processes or others where corrosion or erosion occurs, or flow diversion is required. You can rely on CENTRO FLOW to provide you with high-quality forged stainless steel/carbon steel gate valves for your future project consideration.

  • CENTROFLOW Forged steel gate valve is a kind of gate valve moving towards to the vertical direction of the centre line of the passage. It is mainly used for shut-off function in the medium of pipeline for high-pressure applications and known as its strength. These Forged steel gate valve available for installation in refineries, chemical plants, petrochemical plants, oil industry processes or others where corrosion or erosion occurs, or flow diversion is required. You can rely on CENTRO FLOW to provide you with high-quality forged stainless steel/carbon steel gate valves for your future project consideration.

  • Overview of CENTROFLOW made JIS 10K 20K Gate Valve ,is a casting full bore valve with flexible wedge and external screw suitable for regulation manufactured according to JIS standard.Only needs to operate the wrench or actuator to turn the ball 90 degrees, and can switch the flow direction of two media at the same time, which is convenient and fast, and reach the effect of one valve with multiple functions.

  • Overview of CENTROFLOW made Female Threaded Gate Valve is a valve that fully opened and closed, designed in accordance with ASME B16.34/API 602 standard for low pressure application. The threaded gate valve consists of a closure element, called a disc which can be operated by lifting up or lifting down, using it to permit and stop the fluids flow. It has a female thread NPT on both ends. If find it interested in, contact us for more details...

  • Overview of CENTROFLOW made Gost Standard Gate Valve Bolted Bonnet Gate Valves are casted full bore valve with flexible wedge and external screw suitable for regulation manufactured according to GOST standard. There’re two choices: with rising stem and non-rising stem.

  • Overview of CENTROFLOW made DIN Standard Gate Valve is a casting full bore valve with flexible wedge and external screw suitable for regulation manufactured according to DIN standard.Only needs to operate the wrench or actuator to turn the ball 90 degrees, and can switch the flow direction of two media at the same time, which is convenient and fast, and reach the effect of one valve with multiple functions.

Customized Gate Valve made in China can be purchased at low price or attractive price. CENTRO FLOW is a professional Gate Valve manufacturers and suppliers in China. If I want to wholesale, what price will you give me? If your wholesale quantity is very large, we can provide the discount price. The product made by China factory CENTRO FLOW can also be customized. You are welcomed to come to buy discount and high quality Gate Valve. You can rest assured to buy discount product from us. Let us cooperate with each other to create a better future and mutual benefit.
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