Automatic control valve
Regulation and Control: Continuously adjusts flow rate, pressure, etc., to maintain stable process parameters (e.g., reverse osmosis feed water pressure, chemical reaction feed flow rate).
Switching and Cut-off: Enables remote automatic opening or complete shut-off of pipelines (e.g., emergency discharge, equipment isolation).
Safety Interlock: In emergency situations (overpressure, overtemperature), it quickly operates according to a preset program to ensure system safety (e.g., safety relief valve).
| Application Scenario | Control Valve Role |
|---|---|
| Water Treatment Systems | • RO Systems: Feed Pressure Control Valve after the high-pressure pump controls membrane inlet pressure; Concentrate Throttling Valve controls system recovery. • Ion Exchange Systems: Multi-port valves or pneumatic butterfly/ball valve manifolds automate service, backwash, regeneration, and rinse cycles. • Chemical Dosing: Diaphragm valve or small control valve paired with a metering pump for precise chemical feed control. |
| Chemical & Process Industries | Reactor feed flow control, distillation column temperature/pressure control, tank level control. |
| HVAC Systems | Secondary side supply temperature control in heat exchangers, terminal unit balancing. |
| Power Industry | Boiler feedwater flow control, steam temperature & pressure control. |
Core Functions:
Modulating Control: Continuously regulates flow, pressure, etc., to maintain stable process parameters (e.g., RO feed pressure, chemical feed flow).
On-Off / Block Service: Enables remote automatic opening or tight shut-off of a pipeline (e.g., emergency venting, equipment isolation).
Safety Interlocking: Acts swiftly according to a preset sequence during emergencies (overpressure, overtemperature) to protect the system (e.g., safety relief valves).