To prevent excess Temperatures of solid-fuel-fired Boilers in closed Heating Systems according to DIN 4751/2.

Opens if the Factory Temperature Setting of 95°C (203°F) is reached and supplies cold water to cool-down the boiler.

Pressure Rating PN 10 (145 psi)
Factory Temperature Setting 95°C (203°F)
Temperature Rating max. 125°C (257°F) water (without steam)
Brass Body

Available in:

• Fig. 27906.13 - 3/4” with 1.3m capillary tube
• Fig. 27906.50 - 3/4” with 5m capillary tube