Full port gate valve Description
Full-bore gate valve is a type of gate valve in which the flow channel aperture is basically consistent with the nominal diameter of the valve and there is no reduction in the flow of the medium. Its core design concept is to minimize flow resistance.
Features:
High flow capacity: Due to the full-bore design, the fluid will not encounter additional resistance when passing through the valve, ensuring smooth flow of the fluid and improving the overall efficiency of the system.
Reliable sealing: The gate usually has two sealing surfaces, which can form a wedge-shaped structure to ensure good sealing performance. The sealing surfaces are often welded with wear-resistant materials to enhance durability.
Flexible opening and closing: The movement direction of the gate is perpendicular to the direction of the fluid, so that this valve can only be fully opened and fully closed, and cannot be used for regulation and throttling .
Low flow resistance: The full-bore design reduces the resistance of the fluid when passing through the valve, thereby reducing energy consumption.
Suitable for large flow conditions: This type of gate valve is particularly suitable for situations where large flow media needs to be handled or the pipeline needs to pass through a sweeper .
Easy maintenance: The design of some full-bore gate valves is easy to disassemble and replace the seal ring, simplifying the maintenance process .
Full port gate valve specification
| Parameter | Range | Illustrate |
|---|---|---|
| Nominal diameter | DN15 – DN1800 | Covering small diameter instrument pipes to main pipelines |
| Nominal pressure | PN10 – PN100 | Applicable to low pressure water supply to high pressure oil and gas pipeline |
| Applicable temperature | -29℃ ~ 425℃ | Upper temperature limit of cast steel (stainless steel can reach 600℃) |
Applications
| Industry | Applications | Key Requirements |
|---|---|---|
| Oil and Gas | Long-distance pipeline cutoff and wellhead control | High pressure sealing and pigging performance |
| Chemical Industry | Transport of corrosive media (such as acidic and alkaline liquids) | Full bore anti-clogging and corrosion resistant |
| Electricity | High temperature steam pipeline opening and closing | High temperature resistance, low flow resistance and energy saving |
| Municipal Pipe Network | Water supply/fire main pipe | Low energy consumption, two-way sealing |
| Shipbuilding | Ballast water system, fuel oil delivery | Seawater corrosion resistance, high reliability |
Full port gate valve
Advantages
- Extremely low flow resistance: The straight-through flow channel design makes the fluid resistance close to the straight pipe section, reducing the system energy consumption by 15%~25%.
- Bidirectional sealing: No flow direction restriction, suitable for annular pipe networks and bidirectional flow process systems.
- Easy maintenance: The gate is completely separated from the flow channel in the fully open state, which is convenient for the pipeline pig (PIG) to pass through.
- Long life: The sealing surface only rubs at the moment of opening and closing, and is protected from medium erosion when fully open.
Limitations
- Large volume: The structural length is about 20% longer than that of the reduction valve, and more space needs to be reserved for installation.
- Slow opening and closing: The gate needs to be raised and lowered throughout the entire process, and the operation time is longer than that of the plug valve and ball valve.
- Higher cost: The consumables are 10%~15% higher than those of the reduction valve under the same specifications.
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