What is the gate valve and how to choose gate valve?
Alex-COVNA
Feb 06, 2023
What is the gate valve and how to choose gate valve?
Hey guys, this is Leon from COVNA, today I am gonna to talk about gate valves of COVNA.
-What is the gate valve?
A Gate valve is a linear-motion manual valve that has a vertical rectangular or circular disc that slides across an opening to stop the flow that acts as “gate”.
-Application:
Gate valves are mostly used with larger pipe diameters (from 2 inch to the largest pipelines) since they are less complex to construct than other types of valves in large sizes. The mainly applicated industries of gate valve are Oil & Gas industry, water treatment industry, marine industry, manufacturing industry.
-Structural element:
Gate valves consist of three major components: body, bonnet, and trim. The body is generally connected to the piping by means of flanged, screwed, or welded connections. The bonnet, containing the moving parts, is joined to the body, generally with bolts, to permit cleaning and maintenance. The valve trim consists of the stem, the gate, the wedge, or disc, and the seat rings.
We can customize the most suitable valve for you, no matter the body material, dimension, connection and etc. For material, we can offer SS304, SS316, Cast Steel, Forged steel and etc. For connection, we can offer several chocies such as, flange, thread, welding. As for actuator types, we have manual type, pneumatic type and electric type. If you have any requirements, please let us know. We have a very professional engineer team who can offer you with good solutions.
-Main operating mechanism:
The main operation mechanism is very simple. When the hand-wheel is turned, it rotates the stem, which is translated into the vertical movement of a gate via threads. They are considered multi-turn valves as it takes more than one 360° turn to fully open/close the valve. When the gate is lifted from the path of the flow, the valve opens and when it returns to its closed position, it seals the bore resulting in a full closure of the valve.
-Feature of Stainless Steel Flange Gate Valve: ● The flow resistance is small. The internal media channel of the gate valve body is straight through, the medium flows in a straight line and the flow resistance is small. ● Less effort when opening and closing. Compared with the globe valve, because no matter it is open or closed, the movement direction of the gate is perpendicular to the flow direction of the medium. ● Large height, long opening and closing time. The opening and closing stroke of the gate is large, and the lifting is performed by the screw. ●Water hammer phenomenon is not easy to produce for gate valve. The reason is the long shutdown time. ● The media can flow in any direction on both sides of gate valve, easy to install. Both sides of the gate channel are symmetrical. The face to the face dimension of gate valve is small. ● Simple form, short structure length, good manufacturability and wide range of application. ● The structure is compact, the wedge gate valve has good rigidity, the channel is smooth, the flow resistance is small, the sealing surface is made of stainless steel and hard alloy, and the service life is long. The use of PTFE packing is reliable and easy to operate.
-Advantages of COVNA Valve:
We offer comprehensive line of fluid control solutions for a wide range of industry-focused applications. We introduce German's Advanced Manufacturing Technology, automated assembly line and sophisticated testing instruments to provide you of superior products, including pneumatic valves, electric valves and solenoid valves.
COVNA always put quality as the first consideration. All COVNA products are designed and manufactured by experienced engineering team to provide safe, reliable, dependable and affordable valves, actuators and solutions.
Each product has to pass strict inspection before shipment. With continual feedback from our customers as well as our experience in manufacturing and quality control
COVNA aims to provide our customers premier quality products with the most competitive pricing, on-time delivery and full warranty service.
COVNA is with certifications of compliance that include CE, RoHS. There is no best but better. Your demand is our eternal pursuit. We welcome the opportunity to discuss your specific needs. Let us know how we can be help you!
The above is the introduction of Selection Basisto choose gate valve, hoping to help you understand the purpose and selection of gate valves. If you have any needs for valves, please consult us for selection services and discounted prices. Email:[email protected]
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