The ESBE VTA 520 series thermostatic mixing valve is a suitable component for universal use in domestic hot water installations equipped with HWC (hot water circulation). It is also suitable for smaller underfloor heating circuits (up to 50m²) when special attention needs to be paid to temperature range and flow rate.

Two non-return valves for hot and cold water inlets included.

Applications

• Distribution of fresh/drinking water
• Distribution of water with antifreeze additive (≤ 50% glycol mixture)
• Closed water system

Installation Example

Valve Function

The thermostatic valve has an asymmetrical flow arrangement. The desired temperature setting is done using a rotary knob under the top cover of the valve. It also includes a very important anti-scald function, which automatically shuts off the hot water supply in case of cold water supply interruption.

Features

• Pressure class: PN 10
• Operating pressure: 1.0 MPa (10 bar)
• Differential pressure: Mixing, max. 0.3 MPa (3 bar)
• Medium temperature: max. 95 °C / Temporary max. 100 °C
• Temperature stability: ±4 °C