Our flanged safety valves are available in two high-quality versions: in addition to the robust version in spheroidal graphite iron, we also offer these essential safety components in high-alloy stainless steel. Equipped with an elastomer bellows and a metal-supported elastomer seal, our D/G/H safety valves are specially designed for use in large heating systems within industrial and building services engineering as well as in combined heat and power plants and district heating supplies.

These valves fulfil the demanding requirements of the Swiss SWKI, which underlines their reliability and quality in demanding applications. The availability in ductile iron and high-alloy stainless steel ensures that you can make the optimum choice of material for your specific needs and environmental conditions.

With their special approval for safeguarding critical heat supply systems, our safety valves offer a reliable solution for preventing overpressure, maximising the safety and efficiency of your systems.

connection types

• Flange connection

usage

• CHP units (combined heat and power plants)
• biogas plants
• District heating transfer stations/ house stations
• 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 shall blow off the entire heating output of the boiler in the form of hot water and steam.

Features:

• easy-to-maintain construction
• replaceable seat
• replaceable flat gasket
• freely rotatable spindle-cone connection
• full metal design for high ambient or radiation temperatures
• extensive range of spare parts, see spare parts flange safety valves
• Vertical and horizontal installation position possible
• Safety valves are permanently set and lead-sealed at the factory

Safety valves are permanently set and sealed at the factory.