Technology for Environmental Protection - Measuring. Controlling. Monitoring.
Thermal safety valve TAS 03
For thermal protection of sealed or open solid fuel heating systems


The new AFRISO thermal safety valve TAS 03 is used for thermal protection of sealed or open solid fuel heating systems as per EN 12828 with a heating capacity of up to 100 kW (86,000 kcal). The thermal safety valve consists of a valve housing, a valve, two independent bellow type displacement probes with liquid-filled temperature probes and a pocket. The pocket is installed in the upper part of the boiler. The capillary tube (1,300 or 4,000 mm) integrated in the pocket is protected by a flexible metal hose.



With two independent probe systems, the new AFRISO thermal safety valve TAS 03 von AFRISO offers a maximum of safety. It is used to protect sealed or open solid fuel heating systems of up to 100 kW as per EN 12828.
The new AFRISO thermal safety valve TAS 03 is used for thermal protection of sealed or open solid fuel heating systems as per EN 12828 with a heating capacity of up to 100 kW (86,000 kcal). The thermal safety valve consists of a valve housing, a valve, two independent bellow type displacement probes with liquid-filled temperature probes and a pocket. The pocket is installed in the upper part of the boiler. The capillary tube (1,300 or 4,000 mm) integrated in the pocket is protected by a flexible metal hose. The thermal safety valve is connected to the hot water outlet of the water heater or to the inlet of the safety heat exchanger. If the response temperature of 99 °C is exceeded, the heat expansion of the silicone oil in the probe system causes a stroke via the bellows which opens the valve to supply cooling water from the mains system. This keeps the maximum permissible temperature in the boiler from being exceeded. If one of the temperature probes fails, the second temperature probe provides redundancy. Correct operation of the thermal safety valve TAS 03 can be verified quickly and easily by simply pressing the valve head. TAS 03 can be mounted horizontally or vertically. It must be ensured that hazards caused by hot water or vapour at the free outlet of the discharge line into the funnel are excluded. The new thermal safety valve TAS 03 is suitable for operating temperatures from 5 to 115 °C and an operating pressure of up to 10 bar. Connections include two G¾ female threads for the pocket and a G½ male thread.