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TAS 03 | 42418

Thermal safety valve

in-stock items

  • high response temperature
  • short stem
  • Easy and fast function test by pressing the valve head once

To protect sealed or open solid fuel heating systems as per EN 12828 with a heating capacity of up to 86,000 kcal. Also required for dual-fuel boilers which can be operated with solid fuels.

Thermal safety valve with two independent sensor systems. TAS consists of a valve housing, a valve, two independent bellow type displacement probes with liquid-filled temperature probes and a pocket. The capillary tube is protected by a flexible metal hose. TAS is connected to the hot water outlet of the water heater or to the inlet of the safety heat exchanger. If the response temperature is exceeded, the valve is opened by the thermal probe and cooling water from the mains water supply system is supplied to keep the system from exceeding the maximum operating temperature. Correct operation of TAS can be verified quickly and easily by simply pressing the valve head.

Operating pressure
max. 10 bar
Operating temperature range
Ambient:
max. 80 °C max. at valve
Operating temperature:
5/115 °C
short-term operating temperature:
max. 125 °C max. at capillary tube and probe
response temperature:
  99 °C
blow-off capacity
> 2.4 m³/h > at 110 °C and ∆p = 1 bar
Connection
2 x G¾ female
connection immersion pipe
G½ male
Dimensions
Immersion pipe length:
146 mm
capillary tube length:
4000 mm
Installation length:
146 mm to boiler
Material
Housing:
Hot-pressed brass
Stem:
Brass, nickel-plated