Made of brass, in M- 1/2 and 3/4 threads. Connection threads: Male-Female threads according to ISO228 (BS2779). Relief pressure: There is a choice of 2 types of relief or discharge pressures, 7 Bar or 10 Bar. Tolerance range on relief pressure is determined around ± 0.5Bar.

It guarantees the correct functioning of the thermos due to its double function; relief valve and non-return flow valve. Minimum inlet pressure: 1 Bar – Working temperature: 0-95ºC. Special design of the overpressure evacuation nozzle, easily adaptable to any flexible tube on the market. Handle made of ABS which facilitates manual emptying. Especially suitable for electric water heaters.