Advanced Pressure Safety Solutions

Industry-leading valve technology for reliable overpressure protection.

High Quality Tactical Solutions

Finding A Permanent Solution Is Our Ultimate Goal!

Certification Logos

LESER, founded in 1818 and headquartered in Hamburg, Germany, operates the world's largest safety valve production facility in Hohenwestedt.

As a wholly-owned subsidiary, LESER China was established in 2013 and currently maintains an annual production capacity of 15,000 safety valves, achieving a 25% market share in mainland China.

As a wholly-owned subsidiary of LESER, LESER China manufactures products using the identical design, manufacturing processes, and quality systems as LESER Germany. Core components such as springs and valve seats are uniformly supplied by the German parent company. LESER China’s products are priced at 80% of LESER Germany’s price level, providing cost-competitive solutions.

Some Cool Facts

Numbers Speak For Themselves

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Safety Valve Types
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Years of Experience
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Valves produced Yearly

LESER is committed to ensuring product and process quality and performs a minimum of 35 quality tests on each safety valve in production before delivery.

14 Incoming goods inspection

Such as:

  • Visual inspection
  • Dimensional check
  • Liquid penetrant testing
  • Material identification check
  • Material test certificate inspection
  • Certificate inspection

9 Tests after machining

Such as:

  • Hydrostatic test
  • Visual inspection
  • Dimensional check
  • Material identification check
  • Material test certificate inspection
  • Certificate inspection

7 Quality inspections in assembly

Such as:

  • Visual inspection
  • Operability test
  • Set pressure test
  • Seat tightness test
  • Back seat tightness test
  • Pressure seals

*The test items listed above are not exhaustive but represent key examples of LESER China's quality control protocols. For every valve, LESER China conducts a complete suite of 35 mandatory inspections.