Safety valves with threaded connections are used for handling small and medium mass flows. The LESER threaded connection safety valves are notable for their wide range of set pressures, compact overall dimensions and low weight.
There are two series available:
Type 437: Safety relief valve spring loaded for small mass flows (e.g. thermal expansion and overflow). Body material: stainless steel.
Type 459/462: Full lift safety valve spring loaded for the medium mass flow range (e.g. small scale or pilot plant). Two body materials: stainless steel or steel.