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ESBE DN25 3 Way Mid Port Rotary Valve
Regular price
£89.00
Inc. VAT
£74.17
Exc. VAT
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The ESBE VRG133 is a compact, low leakage 3 way mixing and diverting valve designed for reliable temperature control in heating, cooling and hot water systems. Built from dezincification resistant brass with 28 mm compression ends, it’s quick to install, highly durable and ideal for both residential and commercial installations across the UK.
Key Features
Ultra low internal leakage
Mixing leakage under 0.05% and diverting under 0.02% for improved system efficiency and stable temperatures.
28 mm compression connections
Fast, clean installation on standard 28 mm pipework with no need for special adapters.
DZR brass construction
Dezincification resistant brass body ensures long service life in heating, cooling and potable water systems.
Compatible with ESBE actuators
Works seamlessly with ESBE ARA600 series actuators for automated temperature control without extra linkage kits.
PN10 pressure rating
Rated to 10 bar working pressure, suitable for most domestic and light commercial heating and cooling circuits.
Wide temperature range
Operates continuously up to +110 °C and temporarily up to +130 °C, down to –10 °C for versatile system use.
Product Overview
The ESBE VRG133 DN25 is a high performance 3 way rotary valve engineered for precise mixing or diverting of water flow in heating, cooling and domestic hot water systems. Its compact design and low internal leakage help maintain consistent outlet temperatures while reducing energy waste.
With 28 mm compression fittings, the VRG133 integrates easily into standard UK pipework. The robust DZR brass body resists corrosion and dezincification, making it suitable for long term use in both closed and open systems. A clear position indicator and non slip manual knob allow straightforward commissioning and manual operation, while the valve is ready to be motorised with ESBE ARA600 actuators for full automatic control.
Whether you’re upgrading a radiator circuit, balancing a heat pump system or controlling underfloor heating zones, the offers dependable performance, simple installation and excellent compatibility with ESBE controllers and actuators.
Technical Specifications
| Property | Value |
|---|---|
| Product Type | 3 Way Mixing / Diverting Valve |
| Model Series | ESBE VRG133 |
| Nominal Size (DN) | DN25 |
| Flow Coefficient (Kvs) | 10 |
| Connection Type | 28 mm Compression (CPF) |
| Pressure Class | PN10 (10 bar) |
| Working Pressure | 1 MPa (10 bar) |
| Max. Differential Pressure (Mixing) | 100 kPa (1 bar) |
| Max. Differential Pressure (Diverting) | 200 kPa (2 bar) |
| Temperature Range (Continuous) | –10 °C to +110 °C |
| Temperature Range (Temporary) | Up to +130 °C |
| Body Material | Dezincification Resistant Brass (DZR) |
| Internal Leakage (Mixing) | < 0.05% of flow |
| Internal Leakage (Diverting) | < 0.02% of flow |
| Operating Angle | 90° |
| Actuator Compatibility | ESBE ARA600 series (no linkage kit required) |
| Typical Applications | Heating, cooling, heat pumps, underfloor heating, domestic hot water |
Typical Use Cases
Heat pump flow mixing
Blend high temperature heat pump output to a safe, stable flow temperature for radiators or underfloor circuits.
Underfloor heating zones
Control and balance flow temperatures across different underfloor zones for consistent comfort and efficiency.
Domestic hot water blending
Mix stored hot water to a safe outlet temperature for taps and showers while reducing scald risk.
Commercial heating circuits
Provide stable temperature control in small to medium commercial buildings with multiple heating zones.
BTU & WATT Calculator
Room Dimensions
Room Type
Living Room
Bedroom
Kitchen
Bathroom
Conservatory
Hallway
Glazing Type
Single Glazed
Double Glazed
Triple Glazed
External Walls
0 Wall
1 Wall
2 Walls
3 Walls
4 Walls
Insulation Level
Poor
Average
Good (New Build)
Required Heating
0
Watts
0
BTUs
Documentation
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