Why LESER?

Safety valves protect all kinds of plants from impermissible overpressure. They prevent persons, the environment and investments from being damaged. As they form the last link in the safety chain their perfect function must be ensured. The requirements for development, design, production, and quality management are correspondingly high.

Focus on Safety Valves: LESER is a privately owned company that is totally focussed on design and manufacturing of one product - safety valves. That ensures LESER's commitment to your safety valve requirements.

New safety valve development: LESER continualy improve existing valve lines and develop new valve models to fulfill customers' demands. The LESER R&D Team consists of over 30 people.

Proven technology: For over 40 years LESER has been operating three flow testing laboratories with ASME and TÜV certification for the media of steam, gases and liquids, these are among the biggest facilities in the world. Performance test labs are currently in operation at Wendenstrasse and MV Rugenberger Damm. The simulation of customer plant configuration for safe solutions in special cases is daily business at LESER.
In addition the LESER test labs are accepted as a "STANDARD" of the TÜV for type tests and as a "testing laboratory" of ASME/NB (the first one outside the USA).
Only comprehensive tests and trials can ensure that safety valves will always function perfectly, even under extreme service conditions. LESER performs these tests not only in the development and design phases, but throughout the whole service life of a product. TÜV Nord and other classification and inspection organisations perform daily inspections at LESER. The documentation comprises data sheets, material quality certificates as well as operating and maintenance instructions. A new service LESER offers is the additional supply of material certificates (certificate@leser.com).
LESER safety valves are approved by a large number of authorities and classification societies (e.g., TÜV, ASME/NB, Stoomwezen, Lloyd's Register, I.S.P.E.S.L., CBPVI-China, DNV, GL). This ensures their suitability for service worldwide.

Special Solutions: LESER´s extensive engineering capabilities combined with most modern in-house manufacturing equipment provides for quickest delivery of special solutions.We design, build and test according to your specification.

Installed base: By number LESER have the largest installed base of safety valves throughout the world. Currently LESER produce 75.000 safety valves per year. This installed base guarantees reliability for customers.

Prompt and fast delivery: Extensive stocks of LESER products are maintained in more than 20 countries to guarantee short delivery lead times worldwide. Most spares can be shipped on over night leadtime. During the last years LESER has constantly shortened its delivery periods. Now every safety valve is delivered within 4 days including the required inspections and documentation – even overnight if necessary.

German manufacturing and assembly worldwide: LESER safety valves are manufactured exclusively in Germany by LESER! Certified and well-trained assembler network close to LESER's customer provides assembly and setting services with shortest response time. This guarantees a superior quality level worldwide.

Sizing and selection: Great care is needed when sizing and selecting safety valves. Therefore LESER and its partners give you support in different ways. The Complete Catalogue with its 350 pages provides a comprehensive survey of LESER's product range. You will also find all relevant international standards concerning safety valves as well as a summary of the installation and maintenance instructions for our safety valves. Even the layman is able to select the required safety valve rapidly and reliably by using our sizing program VALVESTAR®. We constantly improve this program and issue updated versions. We can assist you in your systems planning by processing 2D and 3D CAD data. Through seminars LESER provides operators, planners and workshop personnel with information on the function and the design of safety valves. We will also arrange seminars at your premises if required.

Production: All individual parts are manufactured on modern machining centres and CNC lathes. This ensures dimensional conformity and a high surface quality. Quality control, certified by various authority members, presents on all stages of design, constructing and manufacturing. The quality of the castings fulfils the requirements of DIN 1690 Part 10. In cooperation with the foundry each pattern is optimised before series release in order to prevent defects reliably. Solidification simulations are performed with the aid of 3D CAD design data. There is a prototype file for every pattern. The welded seams are tested to the applicable standard (AD, TRD, ASME). Welding work is performed by TÜV and ASME approved welders.

One concept for all series: The universal design permits safe operation independently of the medium, the accessories and the field of application. No conversion is necessary..