LESER
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LESER Original Spare Parts Kit
Kits available for LESER 441/442, 433, 526, 811/821, 459 & 462.
LESER Series 441/442 DIN High Performance Relief Valve
AirGasLiquidSteam
SizeDN 20 – DN 200
Pressure0.1 – 40 bar / PN 16 – PN 40
ConnectionFlanged
LESER Series 447 Critical Service Safety Relief Valve
AirGasLiquidSteam
SizeDN 25 – DN 200
Pressure0.5 – 40 bar / PN 16 – PN 40
ConnectionFlanged
LESER Series 526 API Safety Relief Valve
AirGasLiquidSteam
Size1" – 8" / ANSI 150 – 2500
PressureANSI 150 – 2500 class
ConnectionFlanged
LESER Type 320 Flow Change-Over Valve
AirGasLiquidSteam
SizeDN 25 – DN 300 (1" – 12")
PressurePN 16 – PN 250
ConnectionFlanged
LESER Type 330 Compact Change-Over Valve
AirGasLiquidSteam
SizeDN 25 – DN 400 (1" – 16")
PressurePN 16 – PN 40
ConnectionFlanged
LESER Type 424 Steam Generator Safety Valve
Steam
SizeDN 25 – DN 150 (1" – 6")
Pressure0.5 – 1 bar
ConnectionFlanged
LESER Type 431/433 Modulate Action Safety Valve
AirGasLiquidSteam
SizeDN 15 – DN 150 (1/2" – 6")
Pressure0.2 – 40 bar
ConnectionFlanged
LESER Type 431/433 PN 160 High Pressure Modulate Action Valve
AirGasLiquidSteam
SizeDN 15 (1/2")
Pressure0.3 – 160 bar
ConnectionFlanged
LESER Type 437 Compact Safety Valve
AirGasLiquidSteam
SizeG 3/8 – 1 | NPT 1/2 – 1
Pressure0.1 – 365 bar
ConnectionFlanged & Threaded
LESER Type 438 Compact Safety Valve (O-Ring Disc)
AirGasLiquidSteam
SizeG 3/8 – 1 | NPS 1/2 – 1
Pressure5 – 180 bar
ConnectionFlanged & Threaded
LESER Type 439 Compact Safety Valve (Soft Seal)
AirGasLiquidSteam
SizeG 3/8 – 1 | NPT 1/2 – 1
Pressure0.1 – 16 bar
ConnectionFlanged & Threaded
LESER Type 440 Flanged Heating Safety Valve
Liquid
SizeDN 20 – DN 150 (3/4" – 6")
Pressure1 – 10 bar
ConnectionFlanged
LESER Type 441/442 ANSI High Performance Safety Valve
AirGasLiquidSteam
SizeDN 25 – DN 100 (1" – 4")
Pressure0.1 – 51 bar
ConnectionFlanged
LESER Type 441/442 Full Nozzle ANSI Safety Valve
AirGasLiquidSteam
SizeDN 25 – DN 100 (1" – 4")
Pressure0.1 – 51 bar
ConnectionFlanged
LESER Type 441/442 Full Nozzle DIN Safety Valve
AirGasLiquidSteam
SizeDN 25 – DN 50 (1" – 2")
Pressure0.1 – 40 bar
ConnectionFlanged
LESER Type 444 ANSI Stainless Steel Safety Valve
AirGasLiquidSteam
SizeDN 25 – DN 80 (1" – 3")
Pressure0.1 – 16 bar
ConnectionFlanged
LESER Type 444 DIN Stainless Steel Safety Valve
AirGasLiquidSteam
SizeDN 25 – DN 80 (1" – 3")
Pressure0.1 – 16 bar
ConnectionFlanged
LESER Type 447B Conductive PTFE-Lined Safety Valve
AirGasLiquid
SizeDN 25 – DN 100 (1" – 4")
Pressure0.1 – 16 bar
ConnectionFlanged
LESER Type 455/456 High Pressure Safety Valve
AirGasLiquidSteam
SizeDN 25 – DN 100 (1" – 4")
Pressure2.5 – 100 bar
ConnectionFlanged
LESER Type 457/458 High Pressure Nozzle Safety Valve
AirGasLiquidSteam
SizeDN 25 – DN 150 (1" – 6")
Pressure2.5 – 300 bar
ConnectionFlanged
LESER Type 459 HDD Ultra-High Pressure Safety Valve
AirGasLiquidSteam
SizeNPT 1/2 – 1 | NPS 1/2 – 1
Pressure250 – 850 bar
ConnectionFlanged & Threaded
LESER Type 459 Medium Capacity Safety Valve
AirGasLiquidSteam
SizeNPT 1/2 – 2 | NPS 1/2 – 1
Pressure0.2 – 250 bar
ConnectionFlanged & Threaded
LESER Type 460 Threaded Heating Safety Valve
Liquid
SizeDN 15 – DN 20 (3/4" – 1")
Pressure1 – 10 bar
ConnectionThreaded
LESER Type 462 HDD High Pressure Safety Valve (O-Ring Disc)
AirGasLiquidSteam
SizeNPT 1/2 – 1 | NPS 1/2 – 1
Pressure250 – 350 bar
ConnectionFlanged & Threaded
LESER Type 462 Medium Capacity Safety Valve (O-Ring Disc)
AirGasLiquidSteam
SizeNPT 1/2 – 2 | NPS 1/2 – 1
Pressure0.5 – 250 bar
ConnectionFlanged & Threaded
LESER Type 481 Clean Service Safety Valve
LiquidSteam
SizeDN 15 – DN 25 (3/4" – 1")
Pressure0.1 – 68 bar
ConnectionThreaded
LESER Type 483 Clean Service Aseptic Safety Valve
LiquidSteam
SizeDN 25 – DN 40 (1" – 2")
Pressure0.1 – 16 bar
ConnectionFlanged
LESER Type 484 Container Clean Service Safety Valve
LiquidSteam
SizeContainer Flange
Pressure0.1 – 16 bar
ConnectionFlanged
LESER Type 485 Pipeline Clean Service Safety Valve
LiquidSteam
SizeDN 25 – DN 50 (1" – 2")
Pressure0.1 – 16 bar
ConnectionFlanged
LESER Type 488 High Capacity Clean Service Safety Valve
LiquidSteam
SizeDN 25 – DN 100 (1" – 4")
Pressure0.1 – 16 bar
ConnectionFlanged
LESER Type 712 Supplementary Loading System
LESER Type 714 Electric-Pneumatic Supplementary Loading System
LESER Type 811 Pilot-Operated Safety Valve (Pop Action)
AirGasLiquidSteam
SizeDN 25 – DN 200 (1" – 8")
Pressure2.5 – 255.5 bar
ConnectionFlanged
LESER Type 814 Dual Outlet Pilot-Operated Safety Valve (Pop Action)
AirGasLiquidSteam
SizeDN 100 – DN 200 (4" – 8")
Pressure2.5 – 102.1 bar
ConnectionFlanged
LESER Type 821 Pilot-Operated Safety Valve (Modulate Action)
AirGasLiquidSteam
SizeDN 25 – DN 200 (1" – 8")
Pressure1.0 – 650 bar
ConnectionFlanged
LESER Type 824 Dual Outlet Pilot-Operated Safety Valve (Modulate Action)
AirGasLiquidSteam
SizeDN 100 – DN 200 (4" – 8")
Pressure2.5 – 102.1 bar
ConnectionFlanged