Series 651mSK

Diaphragm safety valve for the protection of small and medium-sized, intrinsically safe solar plants. The valve is characterized by a number of special features: Temperature resistance tested up to 160 °C, 100% metal design and available with different connection types up to a size of one inch. The valve is type tested according to TÜV standards for closed, intrinsically safe solar heating systems with a flow temperatures of up to 120 °C. Depending on the connection size, it is suitable for a heating output of up to 200 kW.

connection types

• Internal pipe thread

• Intrinsically safe solar thermal systems

• closed, intrinsically safe solar heating systems with water or water mixtures as the heat transfer medium with permissible flow temperatures up to 120°C

Due to the all-metal design, these safety valves can also be used at high ambient or radiation temperatures. All materials suitable for peak temperatures up to 160°C.

• Intrinsically safe solar thermal systems

Due to the full metal design, these safety valves can also be used at high ambient or radiation temperatures. All materials suitable for peak temperatures up to 160°C.

For non-intrinsically safe systems and temperatures >120°C, use the safety valves of the 451/851bG or 452/852bGL series.

Safety valves are permanently set and lead-sealed at the factory.