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 specifications bursting disc

Nominal Diameter at Inlet
DN 25 - DN 150 | 1" - 6"
Temperature
-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
Material Bursting Element
1.4404, 1.4435, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal | 316L, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal
Material Sealing Membrane
1.4401, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal | 316, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal
Material Bursting Disc Holder
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®
Download Area of LESER
Downloads

In our comprehensive download area you will find all necessary documents and detailed information on safety valves you need.

Download area
Contact LESER Teaser
Contact LESER

Send a message to LESER

Contact
Contact finder LESER
Contact finder

Your local contact person will support you with all questions concerning the safety valve.

Find your local contact