The HPNR Valves are specifically intended for application on coil type heat exchange water heaters. The valve is a combination non-return and pressure relief device. The non-return prevents the backflow of hot water into the mains supply. The relief valve prevents and overpressure condition within the coil.
The HPNR Valves are available in a standard 15mm size, and in restricted and unrestricted flow models.
- H50/HI50/H75 Series - Expansion Control Valve High Pressure
- HPNR Series - Non-Return High Pressure Expansion Control Valve
- LV50/LV75 Series - Expansion Control Valve Low Pressure