As a key control element in the water treatment system, valves play an irreplaceable role in flow regulation, medium control, pressure management and system protection. The following is an analysis of the professional applications of various valves in the water treatment industry.
Common valve types and applicable working conditions in water treatment systems
| Gate valve | Application | Completely cut off the main pipeline |
| Ball valve | Application | Quick cut-off occasions |
| Butterfly valve | Application | Large flow regulation (DN ≥ 200) |
| Advantages | Compact structure, high cost performance | |
| Stop valve | Application | Accurate flow control |
| Check valve | Type | Swing type, lifting type, double plate type |
| Function | Prevent medium from flowing back |
Valve selection in different water treatment processes
Water treatment system
| Process | Recommended valve | Selection points |
|---|---|---|
| Water intake | Gate valve/butterfly valve | Corrosion resistance |
| Coagulation tank | Rubber lined butterfly valve | Chemical corrosion resistance |
| Filtration system | Pneumatic butterfly valve | Automation control |
| Disinfection unit | Stainless steel ball valve | Chlorine corrosion resistance |
Valve material selection
Cast iron valve
- Applicable: Normal temperature and pressure clean water system
- Cost: Economical choice
Stainless steel valve
- Type: 304/316/2205
- Application: corrosive media
- Features: long service life
Special materials
- Fluorine-lined valve: resistant to strong acids and alkalis
- Hastelloy alloy: for extremely corrosive environments
Maintenance and management
Daily maintenance
Regularly check the sealing performance
Keep the transmission parts lubricated
Life cycle management
Develop a replacement plan
Project Case Sharing
Valve configuration plan for a 200,000 tons/day water plant
- Raw water system: 48″ double eccentric butterfly valve
- Sedimentation tank: pneumatic rubber-lined butterfly valve
- Water supply pump room: slow-closing check valve + electric gate valve
- Chlorination system: 316 stainless steel diaphragm valve
If you need detailed valve solutions for specific process links, please feel free to consult us. We can provide professional valve selection suggestions and system optimization solutions.
