LESER Type 459 Compact Performance Safety Relief Valve (Threaded)

LESER´s Compact Performance Safety Valves cover a large variety of types, materials and options to fit any application:

• Connection sizes from 3/8″ to 1 1/2″ and 5 orifices (D through F) provide high suitability to the application
• Threaded connections, male and female, according to all international standards guarantee worldwide applicability
• Flanged connections according ANSI, DIN and JIS guarantee a worldwide applicability
• Inlet pressure ratings up to PN 700 / Class 2500 to fit all required design pressures
• 2 standard based / inlet body materials, Chrome steel and stainless steel as well as 3 standard body materials, ductile iron, steel and stainless steel can be selected according to the application
• All parts can be machined from bar materials to cover special material requirements such as Hastelloy®, Duplex, Super Duplex, Tantalum or Titanium within unrivalled lead time
• Set pressures from 0.1 to 850 bar / 1.5 to 12328 psig make Compact Performance safety valves suitable for all industrial processes
• Operating temperatures from -270 to 550 °C / -454 to 1022 °F (acc. to DIN EN) cover a wide range of applications
• One design and spring (single trim) for steam, gas and liquid applications reduces the number of spare parts and ensures low cost maintenance management
• Ringless design needs no trim adjustments for easy maintenance
• One-piece spindle reduces friction which leads to high operation accuracy
• Self-draining body design, avoids residues and reduces corrosion

LESER´s Compact Performance Safety Valves can be customized with a great variety of options, e. g.:

• Special connections specified by the customer for optimised adaptation to the plant
• Stellited or hardened metal sealing for longer product life
• Soft seat solutions for superior tightness
• Stainless steel bellows for back pressure compensation
• Heating jackets for applications with high viscosity fluids
• Base / inlet body, body, bonnet and all internal parts can be produced in special materials exactly to meet customer specification requirements