API Flange Stainless steel Gate Valve

API Flange Stainless steel Gate Valve

Introduction to Stainless Steel Gate Valve

The opening and closing part of the stainless steel gate valve is a gate. The direction of movement of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used gate valves form a wedge shape. The wedge angle varies with the valve parameters, usually 50, and 2°52 'when the medium temperature is not high. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce a small amount of deformation to improve its processability and make up for the deviation of the sealing surface angle during processing. The plate is called a spring gate. Gate valves material is divided into a 304 stainless steel gate valve, 316 stainless steel gate valve, 321 stainless steel gate valve. The expression method is Z41H-16P.

Types of gate valves: Wedge gate valves and parallel gate valves can be divided according to the sealing surface configuration. Wedge gate valves can also be divided into a single gate, double gate, and flexible gate; parallel gate valves Can be divided into single gate type and double gate type. According to the thread position of the valve stem, it can be divided into two types: bright stem gate valve and dark stem gate valve.

Features of Gate Valves for Water:

1. The exquisite selection of materials, in accordance with relevant standards at home and abroad, high overall quality of materials.

2. Meet the requirements of domestic and foreign advanced standards, reliable sealing, excellent performance, and beautiful appearance.

3. The sealing pairing is advanced and reasonable. The sealing surfaces of the gate and valve seat are made of Stellite cobalt-based hard alloy with different hardness. 

4. Good anti-scratch performance and long life.

5. The valve stem undergoes quenching and tempering and surface nitriding treatment, and has good corrosion resistance, abrasion resistance and wear resistance.

6. It adopts a wedge-type elastic brake plate structure. Thrust bearings are set in the middle and large calibers. The friction force is small and it is equipped with a manual impact.

Advantage of Stainless Steel Gate Valve:

1. The fluid resistance is small, and the sealing surface is less brushed and eroded by the medium.

2. Less effort to open and close.

3. the medium flow direction is not restricted, does not disturb the flow, does not reduce the pressure.

4. Simple shape, short structure length, good manufacturing process, and wide application range.

5. Gate valve repair is easy.

A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so stainless steel gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can be parallel but are most commonly wedge-shaped.

Application scope: petroleum chemical industry, electric power, metallurgy, medicine, real estate, municipal engineering, and other industries.

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