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Home|Product|SAFETY DEVICES|LESER Safety Relief Valves

LESER Safety Relief Valves

High Performance - Safety Relief Valves Leser

Price: Contact

Model: High Performance

Trademark: LESER

Origin: Germany

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Project details Download Catalogue Evaluate

Leser Safety valves for all industrial applications:

High capacities in comparison to nominal size
Wide range of nominal sizes
Wide range of options available
Excellent price-performance ratio
LESER Nanotightness: Exceeds the tightness requirements of API 527 by 50%

Industries

Chemical
Petrochemical
Energy
Technical Gases
LNG and LPG
Pharmaceutical
Food and Beverage
Ship Building
General industries

Approvals

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

Valve Types

Type 441, 442 DIN
DIN Flange
DN 20 - DN 200 (3/4" - 8")

Type 441, 442 ANSI
ANSI Flange
DN 25 - DN 100 (1" - 4")

Type 441, 442 XXL
High nominal diameter
DN 250 - DN 400 (10" -16")

Type 444 DIN
Deep-drawn body
DN 25 - DN 80 (1" - 3")

Type 444 ANSI
Deep-drawn body
DN 25 - DN 80 (1" - 3")

Type 441, 442 Full nozzle DIN
Nozzle
DN 25 - DN 50 (1" - 2")

Type 441, 442 Full nozzle ANSI
Nozzle
DN 25 - DN 100 (1" - 4")

Type 455, 456
High pressure with seat
DN 25 - DN 100 (1" - 4")

Type 457, 458
High pressure with seat
DN 25 - DN 150 (1" - 6")

Technical data High Perfomance

Nominal Diameter at Inlet
- DN 20 - DN 400 | 3/4" - 16"
Actual Orifice Diameter d₀
- 18 mm - 295 mm | 0.71 in - 11.61 in
Actual Orifice Area A₀
- 254 mm² - 68349 mm² | 0.394 in² - 105.942 in²
Pressure
- 0.1 bar - 300 bar | 1.5 psig - 4,350 psig
Temperature (in accordance with DIN EN)
- -270 °C to 550 °C | -454 °F to 1,022 °F
Body Material
- 0.6025, 0.7043, 1.0619, 1.4408, 1.0460 / 1.0425, 1.4571, 1.4404, 1.4581, 1.7357 | Cast iron, Ductile Gr. 60-40-18, SA 216 WCB, SA 351 CF8M, carbon steel, 316Ti, SA 479 316L, SA 351 CF10M , SA 217 WC6
Valve Connection
- Flange in accordance with DIN EN 1092 or ASME B 16.5
Bellows Material (optional)
- Stainless steel, elastomer
Load Type
- Spring-loaded

Case Study

Bottom Up Valves at Aerzen.

Industry/Application:
- OEM for different industries
LESER Solution:
- High Performance and API

The challenges
As an internationally operating OEM Aerzener Maschinenfabrik has to fulfil a many local, legal requirements as well as customer specifications, of e.g. pressure equipment. Every region has its own set of rules: For example in Europe applies the pressure equipment directive and in America the ASME Code. In addition to the general requirement for global approval concepts, e.g. for pressure equipment according to PED or ASME, the trend among companies is towards modular systems. Planners are trying to use small, linkable systems in order to be able to work flexible and scalable. This makes it easier to coordinate plant capacities. This modularization considerably limits the installation space and freedom in the design or development of e.g. compressors.

Click on the link below to download the catalogues