Gate Valve

Main Classifications

1. By Structure

• Straight-through gate valve: Most commonly used, for straight-line pipeline installation

• Angle gate valve: For 90° turn pipelines, saving bends

• Direct-flow gate valve: Lower flow resistance, suitable for high flow rates

2. By Connection Method: Flange, Threaded, Welded

3. By Actuation Method: Manual, Pneumatic, Electric, Hydraulic

4. Sealing Type: Soft seal (PTFE), Hard seal (Alloy, Stainless Steel)

Core Advantages

• Reliable sealing, highly adaptable to high temperature and high pressure conditions;

• Excellent throttling and pressure reduction functions, suitable for pipelines requiring fine-tuning;

• Slow opening and closing, preventing water hammer impact;

• Simple structure, low failure rate, and low maintenance costs.

Common Materials and Parameters

• Valve Body: WCB carbon steel, 304/316L stainless steel, cast steel, cast iron

• Seal: PTFE, hard alloy, wear-resistant weld overlay

• Pressure: PN16~PN100, Class 150~600

• Temperature: Soft seal: -20℃～180℃ Hard seal: -30℃～425℃

Applicable Industries and Operating Conditions

Widely used for water, steam, oil, gas, and weakly corrosive chemical media:

• Heating and power plant steam pipelines;

• Chemical, petrochemical, and oil refining pipelines;

• Water supply and drainage, HVAC, and fire protection systems;

• Compressed air, heat transfer oil, and hot water pipelines.