1. Product Description
A gate valve is a linear-motion valve designed to fully open or close fluid flow by raising/lowering a rectangular or wedge-shaped gate. It is widely used in industrial pipelines for isolation purposes due to its low flow resistance and tight sealing.
2. Key Features
- Structure:
- Body Types: Split-body (bolted bonnet) vs. solid-body (pressure-seal bonnet).
- Gate Types: Solid wedge, flexible wedge, or split wedge.
- Stem Types: Rising stem (visible thread) vs. non-rising stem.
- Sealing: Metal-to-metal or resilient-seated (e.g., EPDM, PTFE) for leak-proof performance.
- Operation: Manual (handwheel), gear-operated, or actuated (electric/pneumatic).
3. Core Technical Parameters
Parameter | Specifications |
|---|---|
Size Range | ½" to 48" (DN15–DN1200) |
Pressure Rating | Class 150–2500 (PN16–PN420) |
Temperature Range | -29°C to 540°C (varies with materials) |
Materials | Body: Cast iron, carbon steel, stainless steel (SS304/316), duplex steel. |
End Connections | Flanged, threaded, socket weld, or butt weld. |
Standards | API 600, ASME B16.34, BS EN 1171, ISO 10434. |
4. Applications
- Industries: Oil & gas, water treatment, chemical processing, power generation.
- Media: Water, steam, oil, gas, corrosive fluids (material-dependent).
5. Advantages & Limitations
- Pros:
- Minimal pressure drop in fully open position.
- Bidirectional flow capability.
- Suitable for high-pressure/temperature environments.
- Cons:
- Not ideal for throttling.
- Slower operation compared to quarter-turn valves.
6. Selection Guidelines
- Choose material based on fluid compatibility.
- Opt for resilient-seated valves for zero-leakage requirements.
- Select actuated models for remote-controlled systems.
Keywords
Gate Valve
A gate valve is a linear-motion valve designed to fully open or close fluid flow by raising/lowering a rectangular or wedge-shaped gate. It is widely used in industrial pipelines for isolation purposes due to its low flow resistance and tight sealing.
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