LESER GmbH High EfficiencyType 811

Specifications

Technical data.

Every value below comes from the manufacturer datasheet or class-society record on file for this model.

Set pressure(according to CE)2,5 - 255,5 bar | 36,0 - 3705,0 psig

Set pressure (according to ASME)2,5 - 255,5 bar | 36,0 - 3705,0 psig

Temperature(according to CE)-162 - 300 °C | -260 – 572 °F

Temperature(according to ASME)-162 - 300 °C | -260 – 572 °F

Connections DIN EN 1092DN 25 - DN 200

Connections ASME B16.5NPS 1 to NPS 8

Flange class Inlet DIN EN 1092PN 10 - PN 250

Flange class Inlet ASME B16.5Class 150 - Class 1500

Body material1.0619, 1.4408 | 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 d₀11 - 180 mm | 0.433 - 7.087 in

Narrowest flow area A₀95 - 25,446.9 mm² | 0,147 – 39,443 in²

Pdf a back pressure ratio (i.ea ratio of back pressure /

Pdf range can be broadly divided intothe products providing added control the High Efficiency

Pdf on the operating pressure rangeFor details on these

Pdf ranges to ensure maximum tightnessGenerally, at lower shows which sealing is used as a standard.

Pdf main valve) via the pressure pickupThe pilot valve then be described as follows. During operation, the POSV

Pdf in dome pressureAlso, the dome is vented. As a result,

Pdf codes and standardsLESER sets the blowdown in the

Pdf tional state medium does not flowThe closing force of

Pdf exhaust seat and closes the feeding seatThis releases

Pdf the dome pressureThe release of dome pressure is

Pdf pressure to the dome of the main valveHere, the sys-

Pdf pressure range using an adjustment screwOn reaching

Pdf cific parts and dimensions (e.gthe mounting of the

Pdf closes the dome feeding seatThis keeps the dome pres-

Pdf and at different pressure levelsTo change the lift, there

pdf_Body materialWCB 1.0619

pdf_Screw Dimensions accto DIN EN 1092-1

Pdf external test mediumthe medium from the of the pilot. valve piston.

Pdf pressure shall be testedThis allows a quick and simple

pdf_Connection sizeG 1/2 male and NPT 1/4" female Nitrogen

pdf_Housing material316L / 1.4404

Pdf when the medium tends to block the pistonManual blow-

Pdf excessive pressure loss may occurThis can lead to chat- pressure drop.

Pdf materialSpring (54) of Series 820 is not affected by the

Pdf as a standard materialTo order the NACE compliant

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Download datasheet (PDF) (4269 KB)

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High EfficiencyType 811

Technical data.

Images from manufacturer documentation.

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Also in Safety / Relief Valve.

A person reads every request and replies by e-mail.

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