Automatic Recirculation Control Valve
This automatic recirculation control valve prevents overheating and cavitation in centrifugal pumps operating under low load. The bypass backflow opens automatically when the pump flow rate falls below a specific value, ensuring the necessary minimum flow.
Technical Specifications
Overview
Automatic Recirculation Control Valve
The automatic recirculation control valve is a multifunctional solution designed to protect centrifugal pumps from the dangers of overheating, cavitation, and dry running. By automatically ensuring a minimum flow rate during low-demand operation, it safeguards pump integrity without requiring external power, complex wiring, or separate control systems. This compact, reliable valve is ideal for demanding industrial environments where pump uptime and longevity are critical.
Applications
- Suitable Industries
- ChemicalPetrochemicalSteel ManufacturingFire ProtectionPower GenerationShipbuildingPaper & PulpEnvironmental Protection
Model Specifications
Model Comparison
| Model | Primary Application | Max Pressure Diff | Pressure Rating |
|---|---|---|---|
| ZDT | Low Pressure | 4 MPa | CL150# - 400# |
| ZDL | Medium/Low Pressure | 6 MPa | CL150# - 600# |
| ZDM | High Pressure | 30 MPa | CL150# - 2500# |
Technical Features
Body Materials
Carbon SteelStainless Steel
Optional Features
- Manual bypass operation (ZDL & ZDM models)
- Non-return valve function (Standard on ZDL & ZDM)
- ZDT Bypass Flow Capacity
- 60 %
