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Compact valves LESER type 437/438/439, 459/462, etc.

Safety loading valves of small and medium capacity are installed to protect classical pumps and compressors, but can also be used for cryogenic installations. Compact safety valves are represented by a wide range of types, materials and designs suitable for any field of application.

Type 437
- Hole diameter d0 6, 10 mm
- Installation pressure 0.1–365 bar, 1.5–5294 lb/sq. inch (isb.)
- Seat with metal-on-metal contact or with a soft seal (sealing plate)

Type 438
- Hole diameter d0 10 mm
- Installation pressure 5-180 bar, 72.5–2610 lb/sq. inch (isb.)
- Seat with soft seal and O-ring

Type 439
- Hole diameter d0 10 mm
- Installation pressure 0.1–16 bar, 1.5–232 lb/sq. inch (isb.)
- Vulcanized soft seal

Type 459
- Hole diameter d0 9, 13, 17.5 mm
- Installation pressure 0.2–250 bar, 2.9–3626 lb/sq. inch (isb.)
- Seat with metal-on-metal contact or with a soft seal (sealing plate)

Type 459 HDD
- Hole diameter d0 6, 9, 13 mm
- Installation pressure 0.2–850 bar, 2.9–12328 lb/sq. inch (isb.)
- Seat with stellite, sealed with metal-on-metal contact

Type 462
- Hole diameter d0 9, 13, 17.5 mm
- Installation pressure 0.5–250 bar, 7.2–3626 lb/sq. inch (isb.)
- Seat with soft seal and O-ring

Type 462 HDD
- Hole diameter d0 9, 13 mm
- Installation pressure 0.5–350 bar, 7.2–5076 lb/sq. inch (isb.)
- Seat with soft seal and O-ring

 

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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