Gate Valve
Efficient Flow Shut-off Solutions
Gate valves are primarily used to stop the flow of liquids rather than regulate it. When fully open, these valves offer minimal flow resistance as they present no obstruction in the flow path. However, the flow path size does not change linearly as the gate is moved, which can lead to non-uniform changes in flow rate. Depending on construction, partially open gates may vibrate due to fluid flow. When it comes to reliable and top-quality gate valves in Hubli, Neo Valves leads the industry with their top-notch products. Trust Neo Valves for precision-engineered gate valves that ensure efficient flow control in any application.
Gate valves serve as essential components for halting liquid flow, particularly in larger pipe diameters, as they are less complex to construct in larger sizes compared to other valve types. In high-pressure scenarios, friction can pose challenges, making valve operation more difficult. To mitigate this, larger gate valves might be equipped with a bypass controlled by a smaller valve to reduce pressure before operating the gate valve.
How Gate Valve Works
Gate valves operate by lifting or lowering a gate (wedge-shaped disc) to control the flow of liquids. When fully lifted, the gate is clear of the flow path, allowing uninterrupted flow. However, the flow path's size does not change proportionally with the gate's movement.
Gate Valve
Standards
1. Design and Manufacturing Standard as per API 600/BS 1414.
2. Face to Face and End to End Dimensions Standards as per ASME B16.10.
3. Flange Dimension Standard as per ASME B16.5.
4. Inspection and Testing Standard as per API 598.
5. For low temperature and cryogenic service (cold box and non-cold box applications) extend bonnet as per BS 6364.
Key Features
1. Design
Bonnet, Union Bonnet.
2. Pressure Rating Class
150#, 300#, 600#, 800#, 900#, 1500#
3. Operation
Manual Lever, Manual Gear Box, Electrical and Pneumatic Actuator.
4. Ends
Flanged, Screwed, Socket Weld, Butt Weld, Flanged Butt Weld.
5. Size Range
50 mm to 600 mm.
Forged Gate Valve
Standards
1. Design and Manufacturing Standard as per BS EN ISO 17292.
2. Face to Face and End to End Dimensions Standards as per ASME B16.10.
3. Flange Dimension Standard as per ISO 5208{Replace of BS 6755(Part-1)}
4. Fire Safe Design as per API 607
Key Features
1. Design
Single Piece, Two Piece, Three Piece, Trunnion Mounted, Jacketed.
2. Pressure Rating Class
150#, 300#, 600#, 800#, 900#, 1500#
3. Operation
Manual Lever, Manual Gear Box, Electrical and Pneumatic Actuator.
4. Ends
Flanged, Screwed, Socket Weld, Butt Weld, Flanged Butt Weld.
5. Size Range
15 mm to 200 mm.
Benefits of Gate Valve
1. Efficient flow shut-off capability
2. Minimal flow resistance when fully open
3. Suitable for larger pipe diameters
4. Versatility in applications where minor valve leakage is acceptable
5. Nonlinear changes in flow path size with gate movement
6. Commonly used in larger pipe diameters
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Frequently Asked Questions
In what scenarios are gate valves most commonly used?
Gate valves are frequently used in larger pipe diameters were shutting off flow is a primary requirement due to their construction simplicity.
How do gate valves manage high-pressure scenarios?
In high-pressure situations, friction can pose challenges in operating gate valves. Some larger gate valves are equipped with a bypass controlled by a smaller valve to alleviate pressure before valve operation.
What distinguishes gate valves from other types of valves in terms of flow control?
Gate valves are primarily designed for on/off service to stop the flow of liquids, offering minimal resistance when fully open. Unlike some other valves, they are less suited for flow regulation due to non-linear changes in flow path size with gate movement.
Are gate valves suitable for applications where leakage is not tolerable?
Gate valves without an additional sealing ring on the gate or seat might not provide complete sealing, making them suitable for applications like heating circuits or sewer pipes where minor leakage is acceptable. However, they may not be suitable for environments where zero leakage is critical.
