While it smoothly follows the thermal movement of the piping due to thermal expansion, it absorbs the vibrations of the piping and protects the piping and equipment when impact loads such as earthquakes occur.
This is a hydraulic snubber (hydraulic vibration damper) from the German company LISEGA, which boasts the world's top market share in pipe supports (piping support devices). We have standard products in stock at our domestic factory in Japan, enabling us to respond to short delivery times. LISEGA's hydraulic snubbers have been in use for over 40 years. The most common cause of trouble with hydraulic snubbers is oil leakage due to rapid wear, damage, and corrosion; however, LISEGA has optimized the internal sealing mechanism, guides, and hydraulic oil of the hydraulic snubber, ensuring that it functions without issues for at least 23 years in the normal operating conditions of a nuclear power plant, as proven by reliable certification methods.
LISEGA hydraulic snubbers guarantee excellent performance and long service life due to the following quality characteristics:
- Body parts are made from corrosion-resistant materials
- Adoption of a special sealing mechanism
- Adoption of a special vibration-resistant guide
- Built-in oil reservoir
- Approved minimum maintenance-free operating period of 23 years through testing
- 60-year design life
- Certification of conformity testing according to KTA3205.3
- Product design in accordance with ASME-NCA3800
- Company：山下製作所
- Price：Other
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