Steam Valve Selection Guide

Steam Valve Selection Guide

1. Determine Basic Parameters

1. Working Pressure (PN)

• Common levels: PN16, PN25, PN40, etc.

• High-pressure steam requires higher PN ratings.

2. Operating Temperature (℃)

• Saturated steam: 100–250°C

• Superheated steam: Above 250°C

3. Pipe Size (DN)

• Determines the valve's diameter

4. Medium Properties

• Saturated or superheated steam?

• Any corrosive elements or impurities?

5. Control Method

• Manual, electric, pneumatic, or automatic?

2. Common Valve Types for Steam Applications

3. Recommended Materials by Temperature

4. Special Considerations

• High-temp/high-pressure systems: Use forged steel or special alloy valves.

• Frequent operation: Use globe or actuated ball valves.

• Automation required: Use control valves with electric or pneumatic actuators.

• Energy saving: Choose high-efficiency steam traps and tight-sealing valves.

5. General Selection Tips

For typical applications:

• Shutoff: Gate or Ball Valve

• Flow control: Globe Valve

• Condensate removal: Steam Trap + Check Valve

• Automated regulation: Control Valve + Actuator

• Main line pressure control: Pressure Reducing Valve