ZD Series Automatic Recirculation Valve for Centrifugal Pump Protection - 30 MPa Max Pressure, 1-20 Inch Sizes
Price:
Negotiable
MOQ:
1
Delivery Time:
2-4 weeks
Brand:
Veson
Product Description
Automatic Recirculation Valve for Centrifugal Pump Protection
The ZD series Automatic Recirculation Control Valve (ARC valve) is engineered to protect centrifugal pumps from damage caused by low flow conditions. This multifunctional valve automatically maintains a predetermined minimum flow through the pump at all times, preventing overheating, cavitation, and permanent damage.
Industrial Applications
- Chemical and petrochemical industries
- Power generation plants
- Steel manufacturing facilities
- Fire protection systems
- Paper-making industry
- Marine and shipping applications
- Environmental protection systems
Pump Protection Systems Comparison
Continuous Circulating System
Provides excellent pump protection but requires additional energy output to maintain both process flow and recycle flow, resulting in energy waste.
Control Circulating System
Eliminates energy waste when process flow exceeds minimum requirements, but involves complex components with higher installation and maintenance costs.
Automatic Recirculation Control Valve
Integrates check valve, flow sensing, bypass control, and multi-stage pressure reduction in one compact unit. No external power, control systems, or wiring required, making it the preferred modern solution.
ZD Series Valve Models & Specifications
ART Model
- Simple structure, long service life
- Maximum pressure differential: 4 MPa
- Bypass flow capacity: Up to 60% of main flow
- Pressure classes: CL150# - 400#
- Size range: 1" - 16"
- Materials: Carbon steel or stainless steel
ARL Model
- Multi-orifice cage bypass for low noise operation
- Maximum pressure differential: 6 MPa
- Venturi port main flow check valve
- Pressure classes: CL150# - 600#
- Size range: 1" - 20"
- Optional manual bypass operation
ARM Model
- Multi-stage decompression prevents cavitation
- Maximum pressure differential: 30 MPa
- Pressure classes: CL150# - 2500#
- Size range: 1" - 20"
- Forged steel construction
- Optional manual bypass operation
Working Principle
The ARC valve automatically senses main flow variations through its main valve disc check cone. As flow decreases below the minimum threshold, the valve disc position changes, activating the bypass system to recirculate the required minimum flow back to the storage device.
Integrated Functions
- Flow perception: Automatically detects main system flow changes
- Recirculation control: Maintains pump minimum flow requirements
- Multi-stage pressure reduction: Reduces bypass flow from high to low pressure with minimal noise
- Check valve function: Prevents liquid backflow to pump body
Technical Specifications
| Property | Description |
|---|---|
| Function | Protects pumps from damage caused by low flow conditions by automatically recirculating liquid |
| Types | Mechanical, electronic, and hydraulic |
| Applications | Oil and gas processing, chemical manufacturing, power generation, water treatment |
| Pump Type | Centrifugal pumps |
| Key Factors | Flow rate, pressure, temperature, and specific application requirements |
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Company
Veson Valve Ltd.
Contact Person
Judy.Zhao