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High performance valves LESER type 441/442, 455/456, 457/458, etc.

Flanged safety relief valves are installed to protect pressure vessels and industrial systems (installations with gas, steam, liquid) to ensure rapid discharge of the maximum possible volume.

DIN type 441 and 442
- Dw 20, 40, 50
- Setting pressure 0.1 – 40 bar, 1.5 – 580 psig
- Flanges according to DIN EN 1092

ANSI Type 441 and 442
- Valve size 1" – 4"
- Setting pressure 0.1–51 bar, 1.5 – 740 psig
- Flanges according to ASME B16.5

Type 441, 442 XXL
- Du 25 – 100, 1" – 4"
- Setting pressure 0.2 – 25 bar, 3 – 360 psig
- Flanges according to DIN EN 1092 and ASME B16.5

Type 444 DIN
- Du 25 – 80
- Setting pressure 0.1 – 16 bar, 1.5 – 232 psig
- Flanges according to DIN EN 1092

ANSI Type 444
- Valve size 1" – 3"
- Setting pressure 0.1 – 16 bar, 1.5 – 232 psig
- Flanges according to ASME B16.5

Type 441 and 442 with solid nozzle according to DIN
- Dw 20, 40, 50
- Setting pressure 0.1–40 bar, 1.5–580 psig
- Flanges according to DIN EN 1092

Type 441 and 442 with ANSI solid nozzle
- Valve size 1-4"
- Setting pressure 0.1–51 bar, 1.5–740 psig
- Flanges according to ASME B16.5

Type 455, 456
- Du 25 – 100, 1" – 4"
- Installation pressure 2.5–100 bar, 36-1450 psig
- Flanges according to DIN EN 1092 and ASME B16.5

Type 457, 458
- DY 25-150, 1"-6"
- Installation pressure 2.5–300 bar, 36-4350 psig
- Flanges according to DIN EN 1092 and ASME B16.5

Type 702, 712, 714, 731
- DN 25 - DN 400 | 1 "- 16"
- PN10 - PN400 | CL150 - CL2500
- Additional load (compressed air) 4-10 bar

 

All LESER products

The group "New Technologies" offers for review the products of the plant LESER: safety valves of high, medium and low performance, pilot safety valves, API standard valves, valves for sterile and aggressive conditions, switching valves, bursting membranes
  • High performance valves LESER
    High performance valves
    type 441/442, 455/456, 457/458, etc.
  • API Standard Valves LESER
    API Standard Valves
    type 526, etc.
  • Compact valves LESER
    Compact valves
    type 437/438/439, 459/462, etc.
  • Valves for sterile media LESER
    Valves for sterile media
    type 481/483/488/484/485 , etc .
  • Valves for aggressive media LESER
    Valves for aggressive media
    type 447/449, 546, etc.
  • Low-capacity valves LESER
    Low-capacity valves
    type 427/429, 431/433, etc.
  • Safety valves for heating LESER
    Safety valves for heating
    type 424, 440, 460, etc.
  • Switching valves LESER
    Switching valves
    type 310, etc.
  • Bursting membranes LESER
    Bursting membranes
    type KUB, etc.
  • Pilot valves LESER
    Pilot valves
    type 810, 820, etc.

About LESER

LESER (Germany) is a private family company, fully focused on the development and production of one product - safety valves to protect equipment of any kind from unacceptable excess pressure.

  • LATEST DEVELOPMENTS

    LESER continuously improves existing lines and develops new models of safety valves to meet the needs of customers.

  • QUALITY TESTS

    LESER has three efficient performance testing laboratories for steam, gases and liquids, certified by TUV and ASME.

  • OWN PRODUCTION

    LESER safety valves are manufactured exclusively in Germany by LESER. This guarantees a high level of product quality.

Information Board LESER

Learn more about our products LESER.
  • Price list for products of the plant LESER
    Price list for products
  • LESER equipment catalog в магазине LESER
    LESER equipment catalog
  • A brief overview of от производителя LESER products
    A brief overview of LESER products
  • Catalog of standard full-lift safety valves марки LESER
    Catalog of standard full-lift safety valves
  • Flanged safety valves производства LESER
    Flanged safety valves
  • Safety loading valves series 437 series 459 марки LESER
    Safety loading valves series 437 series 459
  • Safety loading valves series 48X изготовителя LESER
    Safety loading valves series 48X
  • Flanged safety relief valves series 546 series 44 производства LESER
    Flanged safety relief valves series 546 series 44
  • Switching valves Type 310 производства LESER
    Switching valves Type 310
  • Safety valves with installable завода LESER
    Safety valves with installable
  • Safety valves series 810 – blasting series 820 – bypass производства LESER
    Safety valves series 810 – blasting series 820 – bypass
  • Questionnaire for производства LESER equipment
    Questionnaire for LESER equipment

NEW TECHNOLOGIES GROUP

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