Van an toàn mặt bích hiệu quả cao

Van an toàn mặt bích hiệu quả cao

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Van an toàn mặt bích hiệu quả cao

High Efficiency Pilot Operated Safety Valves

Solutions for high plant efficiency

Pilot operated safety valves

  • Highest blow-off capacity of all series
  • Tightness right up to set pressure
  • Operating pressures up to 96% of the set pressure
  • Back pressures up to 70% of the set pressure
  • Backflow preventer integrated as a standard component 
  • Integrated Piping prevents damage and freezing

Supplementary Loading System

  • Equipment that enables the following safety valve characteristics:
  • Tightness right up to set pressure
  • Operating pressures up to 97% of the set pressure 
  • Low loss of medium due to short opening times
  • Function test and valve adjustment possible during operation
  • Suitable for all media temperatures

Industries

Approvals

Chemical 

Oil & Gas 

Petrochemical 

Energy

Technical Gases

LNG & LPG

General industries

LESER High Efficiency safety valves are designed, marked, produced and approved according to the requirements of the following regulations:

Valve Types

Type 811

Pilot operated / Pop Action

DN 25 - DN 200 (1" - 8")

Type 821

Pilot operated / Modulate Action

DN 25 - DN 200 (1" - 8")

Type 702, 712, 714, 731

Supplementary Loading System (additional option for safety valves)

Technical data pilot operated safety valves

Nominal Diameter at Inlet

DN 25 - DN 200 | 1" - 8"

Actual Orifice Diameter d₀

11 mm - 180 mm | 0.433 in - 7.087 in

Actual Orifice Area A₀

95 mm² - 25,446.9 mm² | 0.147 in² - 39.443 in²

Pressure

2.5 bar - 426 bar | 36 psig - 6170 psig

Temperature (in accordance with DIN EN)

-48 °C to 200 °C | -54.4°F to 392°F

Body Material

1.0619, 1.4408 | SA 352 LCB, SA 216 WCB, SA 351 CF8M

Valve Connection

Flange in accordance with DIN EN 1092, ASME B 16.5 or JIS 2220

Load Type

Medium controlled

Technical data supplementary loading system

Bauart

Pneumatically, electropneumatically

Max. Betriebsdruck

315 bar

Anbau an Type

441 up to DN 400, 457 up to DN 150, 526 up to DN 200

Load Type

Additionally loaded (compressed air) 4 - 10 bar

Antriebsgröße

G1 - 3S

  

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