Best Availability
Best Availability Safety Valve from LESER

Additional products for higher plant availability

Change-over valve in combination with safety valves

  • Most economical solution for redundant protection
  • Flow-optimized design for minimal inlet pressure loss
  • Modular system for adaptation to required connection diameters and pressure stages
  • Robust and maintenance-free design and simple changeover
  • Short delivery times synchronized with the safety valves
  • Complete, coordinated combination of one supplier with qualified resistance coefficients

Bursting discs with safety valves in combination

  • Tight up to the set pressure
  • Protection of the safety valve against corrosion and sticking
  • Component-tested combination of safety valve and bursting disc: Compliance with the 3% criterion - no consideration of the bursting disc in the sizing process

Approvals

LESER Change-over valves are designed, marked, produced and approved according to the requirements of the following regulations:

  • LESER CE Approvel
  • LESER EAC Approvel
  • LESER CRN Approvel

Valve Types

Type 320 Flow

Change-over valve casted

DN 25 - DN 300 (1'' - 12'' )

Type 330 Compact

Change-over valves casted

DN 25 - DN 400 (NPS 1'' - NPS 16")

Bursting discs

Safety valve - Bursting-disc combination

DN 25 - DN 150 (1" - 6")

Technical specifications

Nominal Diameter at Inlet
DN 25 - DN 100 | 1" - 4"
Temperature (in accordance with DIN EN)
-273°C to +450°C | -459°F to +842°F
Body Material
1.0619, 1.4408 |WCB/WCC, LCB, CF8M
Valve Connection
Flange in accordance with DIN EN 1092-1 and ASME B 16.5

Technical specification busrting disc

Temperatur
-30°C to +550°C | -22°F to +1022°F (depending on the material)
Valve Connection
Flange in accordance with DIN EN 1092-1 and ASME B 16.5
Assembly on Type
DN 25 - DN 150 | 1" - 6"
Werkstoff Berstelement
1.4404, 1.4435, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal | 316L, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal
Werkstoff Dichtmembran
1.4401, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal | 316, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal
Werkstoff Berstscheibenhalter
1.4571, 1.4404, Hastelloy® C4, 1.4571 Tantal coated | 316Ti, 316L, Hastelloy® C4, 316Ti Tantal coated
Valvestar from LESER
VALVESTAR®

Sizing of your safety valve.

VALVESTAR®