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LESER Product Overview

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valves for details

Advantages

  • Change-over Valves:
  • Change-over Valves connect two safety valves to a pressurized system, in order to increase plant availability.
  • The advantages of our Change-over Valve Type 320 Flow and 330 Compact are as follows:
  • Most economic solution:
  • - flow optimized design for minimal inlet pressure loss
  • - Type 330 Compact for basic applications, Type 320 Flow for high pressure loss requirements
  • - Adaptable inlet nozzle at the inlet side for: adapting to piping sizes, reduction of inlet pressure drop
  • - Smart coupling: standardized solution for lockable combination of Change-over Valves with different sizes and pressure ratings resulting in clear dimensions and precise pressure loss coefficients
  • Safe operation 24/7:
  • - easy and fail-safe operation
  • - robust and maintenance-free design
  • - precise pressure loss coefficients for each configuration ensures reliable pressure drop calculation
  • Fast availability
  • - short delivery times aligned with safety valves
  • - complete, optimized combination of Change-over Valves and safety valves
  • Bursting disc (KUB) in combination with safety valves:
  • Tightness until opening
  • Component-tested safety valve and bursting disc combination: conformity to the 3% criteria--bursting disc does not have to be factored-in during layout.

Technical Specifications

Change-over Valve Type 320
DN DN 25 - DN 100 | 1" - 4"
Temperature -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
Change-over Valve Type 330
DN DN 25 - DN 100 | 1'' - 4''
Temperature -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
Change-over Valve Type 310
DN DN 25 - DN 500 | 1'' - 20''
Temperature -270°C bis +538°C | -454 °F bis +1.000 °F
Body Material 1.0619, 1.4408, 1.6220 | SA 216 WCB, SA 351 CF8M, SA 216 LCB
Valve Connection Flange in accordance with DIN EN 1092-1 and ASME B 16.5
Bursting disc (KUB)
DN DN 25 - DN 150 | 1" - 6"
Temperature -30°C to +550°C | -22°F to +1022°F (depending on the material)
Material Bursting element 1.4404, 1.4435, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal | 316L, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal
Material Sealing membran 1.4401, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal | 316, Nickel, Inconel®, Monel®, Hastelloy®, Titan, Tantal
Bursting disc holder
DN DN 25 - DN 150 | 1" - 6"
Temperature -30°C to +550°C | -22°F to +1022°F (depending on the material)
Material 1.4571, 1.4404, Hastelloy® C4, 1.4571 Tantal coated | 316Ti, 316L, Hastelloy® C4, 316Ti Tantal coated
Valve Connection Flange in accordance with DIN EN 1092-1 and ASME B 16.5

Approvals

Industries

  • Oil and Gas Industry
  • Petrochemical Industry
  • Chemical Industry
  • Energy
  • Refrigeration
  • Technical gases

Valve Types

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