Description
28mm Heat Pump Flow Balancing Valve with Fill & Flush – 4–40 L/min
The Bastion 28mm Heat Pump Flow Balancing Valve with Fill & Flush (ZL-4901-28-00) is designed to provide accurate water flow control in air source heat pump (ASHP) and wet underfloor heating systems.
Correct flow balancing is essential for achieving efficient heat transfer and maintaining reliable heating system performance. With an adjustable flow range of 4–40 litres per minute, this valve allows installers to set the required flow rate to suit the heating system’s design.
The integrated fill and flush functionality provides convenient access for filling, flushing and servicing heating circuits, helping to simplify installation and commissioning.
Key Features & Benefits
- 28mm Connection Size – Suitable for compatible 28mm heating pipework.
- 4–40 L/min Flow Range – Allows accurate adjustment of water flow.
- Integrated Fill & Flush – Provides convenient access for system filling, flushing and maintenance.
- Ideal for Heat Pump Systems – Designed for use in compatible air source heat pump installations.
- Underfloor Heating Compatible – Suitable for wet underfloor heating applications.
- Reliable Performance – Supports correct flow balancing and efficient heat distribution.
- Domestic & Commercial Applications – Suitable for a wide range of heating installations.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Bastion |
| Manufacturer Part Number | ZL-4901-28-00 |
| Product Type | Heat Pump Flow Balancing Valve |
| Connection Size | 28mm |
| Flow Range | 4–40 L/min |
| Maximum Static Pressure | 10 Bar |
| Maximum Operating Temperature | 110°C |
| Additional Function | Fill & Flush |
| Applications | ASHP, Heat Pumps, Underfloor Heating |
Applications
Suitable for use in compatible:
- Air source heat pump (ASHP) systems
- Wet underfloor heating installations
- Low-temperature heating circuits
- Domestic and commercial heating systems
- System commissioning and maintenance applications
Why Choose a Flow Balancing Valve?
Maintaining the correct water flow helps ensure that heat pump and underfloor heating systems operate according to their design requirements.
The Bastion 28mm Flow Balancing Valve combines adjustable flow regulation with practical filling and flushing functionality, making it a convenient solution for professional heating installers.
Installation Note: Always check compatibility with the heating system and follow the manufacturer’s recommended flow settings.
