LESER High Efficiency POSV Type 811

High EfficiencyType 811

The pilot-operated safety valves of the Type 811 - Pop Action - open abruptly. Technical data

  • Pilot controlled Safety valves according to API 526 - Pop Action
  • CE_Europa_schwarz
  • VdTUEV
  • ASME_UV_USA_schwarz
  • CRN_Kanada_schwarz
  • TS_Logo_China_schwarz
  • EAC_Russland_schwarz
  • UKCA_Grossbritanien_schwarz
  • Vogel
  • Bureau-Veritas
  • LloydsRegister
  • RINA-1861
  • DNV
  • US-Coast-Guard

Applications & Industries

  • Chemistry
  • Oil & Gas
  • Petrochemical
  • Energy
  • Technical gases
  • LNG & LPG
  • Other industries
 

The optimal solution for:

  • the protection of gases
  • operation at up to 96% from set pressure
  • Counterpressures of up to 70% from set pressure
Linde_inv Babcock Magnum Trailer Mounted Kits

Technical features Type 811

Set pressure(according to CE) 2.5 - 256 bar | 36 - 3,705 psig
Set pressure (according to ASME) 2.5 - 256 bar | 36 - 3,705 psig
Temperature(according to CE) -45 to 200 °C (individual case: -162 to 300 °C)
Temperature(according to ASME) -49 to 392 °F (individual case: -259.6 to 572 °F)
Capacity orifice D - T+
Connections DIN EN 1092 DN 25 - DN 200
Connections ASME B16.5 NPS 1 to NPS 8
Flange class Inlet DIN EN 1092 PN 10 - PN 250
Flange class Inlet ASME B16.5 Class 150 - Class 1500
Body material

1.0619, 1.4408, 1.7357 | SA 216 WCB, SA 351 CF8M, SA 217 WC6, SA 352 LCB, SA 351 CF3M, SA 995 Gr 4A CD3MN (Duplex), SA 494 M35-1 (Monel), SA 494 CX2MW (Hastelloy)

Narrowest flow diameter d₀ 11 - 180 mm | 0.433 - 7.087 in
Narrowest flow area A₀ 95 - 25,446.9 mm² | 95 - 25,446.9 mm²
Seat gasket Soft sealing, Metallic, Sealing plate
Download Catalogues

High Efficiency Catalog

Download the High Efficiency Catalog now.

Download Catalogue
Contact LESER

Contact LESER

Send a message to LESER

Contact
Calculation of safety valves with LESER-Valvestar

Sizing and selection

Sizing and selection of your LESER Safety valve with VALVESTAR® - The Sizing Program

Valvestar