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product page - LESER Compact Performance presssure relief valves

COMPACT
PERFORMANCE

Pressure relief valves with compact dimensions and high connection variety

LESER Compact Performance Type pressure relief valves

  • Flanged and threaded valves with a various options

  • Small installation space with simultaneous horizontal installation optio

  • Available as a bellows version

  • Set pressures up to 850 barg / 12325 psig

  • LESER Nanotightness: Exceeds the tightness requirements of API 527 by 50%

Standard delivery time for all options 14 days ex works.

More complex options have longer delivery times.

Industries

Approvals

LESER Compact Performance pressure relief valves are designed, marked, produced and approved according to the requirements of the following regulations:

ce mark logo

UV

asme-uv logo
EAC logo

Valve Types

Type 437 >
Metal to metal or sealing plate

G 3/8 - 1 (NPT 1/2" - 1")

Type 459 >
Metal to metal or sealing plate

1/2" - 1 1/2" (1/2" - 1 1/2")

Type 438 >
O-ring disc

G 3/8 - 1 (NPT 1/2" - 1")

Type 459 HDD >
Metal to metal or sealing plate, massive construction for high pressure

1/2" - 1“ (1/2" - 1“ )

Type 439 >
Vulcanized soft seal disc

G 3/8 - 1 (NPT 1/2" - 1")

Type 462 >
O-ring disc

1/2" - 1 1/2" (1/2" - 1 1/2")

Type 462 HDD >
O-ring disc, massive construction for high pressure

1/2" - 1“ (1/2" - 1“ )

Technical Specifications for Compact Performance

Nominal Diameter at Inlet

DN 15 - DN 40 | 3/8" - 1 1/2"

Actual Orifice Diameter d₀

6 mm - 17.5 mm | 0.236 in - 0.689 in

Actual Orifice Area A₀

28.3 mm² - 241 mm² | 0.044 in² - 0.374 in²

Pressure

0.1 bar - 850 bar | 1.5 psig - 12.328 psig

Temperature (in accordance with DIN EN)

-270°C to +450°C | -454°F to +842°F

Body Material

1.4104, 1.4404, 0.7043, 1.0619, 1.4408 | SA 479 430, SA 479 316L, Ductile Gr. 60-40-18, SA 216 WCB, SA 351 CF8M

Valve Connection

Threads iaw DIN ISO 228-1, DIN ISO 7-1 / BS 21, ANSI / ASME B1.20.1. / Flange iaw DIN EN 1092-1 / DIN 2501., ASME B16.5

Bellows Material (optional)

Stainless steel, Elastomer (EPDM), Hastelloy, Inconel

Load Type

Spring-loaded

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Downloads

Access all the necessary documents and detailed information for pressure relief valves in our download area.

view or download the LESER Compact Performance product catalogue
View or Download
contact LESER UK

CONTACT LESER UK

For ALL LESER Safety Valve enquiries In the United Kingdom - Contact LESER UK​

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