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Leser Product Information

Leser Type 437,438,439

Safety Valve with Threaded Connections

Type 437,459,462

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, 430 chrome 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.

 Technical Information
Type Inlet-Male NPT
437 1/2"
459 3/4"...1"
462 3/4"...1"