Series 355bHL

Proven technology comprising of various materials for the most varied requirements: This valve made of spheroidal graphite cast iron GGG40.3 is a cost-effective alternative to the corrosion-resistant versions made of gunmetal or stainless steel. These safety valves are not only used for the protection of large-scale heating plants in building technology but also for industrial applications and power stations.

connection types

• Flange connection

• biogas plants
• CHP units (combined heat and power plants)
• District heating transfer stations/ house stations

For safeguarding closed, thermostatically protected water heating systems with flow temperatures up to 120°C for all static heights or nominal outputs above 350 kW according to TRD 721, DIN 4751 and DIN EN 12828.

In the event of failure of the thermostatic control and limiting devices, the safety valve must blow off the entire heating output of the boiler in the form of hot water and steam.

Safety valves are permanently set and sealed at the factory.