Today, Xiaobian and you will learn Xi classification knowledge of valves

According to the temperature of the medium to which the valve is applicable:

1. Ordinary valve: suitable for valves with medium temperature -40~425°C.

2. High temperature valve: suitable for valves with medium temperature of 425~600°C.

3. Heat-resistant valve: suitable for valves with medium temperature above 600°C.

4. Cryogenic valve: suitable for medium temperature -40~-150°C.

5. Ultra-low temperature valve: suitable for valves with medium temperature below -150°C.

According to the nominal diameter of the valve:

1. Small diameter valve: valve with nominal diameter DN<40mm.

2. Medium diameter valve: valve with nominal diameter DN50~300mm.

3. Large-diameter valves: valves with nominal diameter DN350~1200mm.

4. Extra-large diameter valve: valve with nominal diameter DN≥1400mm.