News

​When purchasing refrigeration components, vibration absorbers are often treated as standard parts—ordered simply by confirming connection size, length, and quantity. However, in CO2 refrigeration systems, this approach can overlook critical risks. The operating pressures, pressure pulsations, start-stop frequencies, and temperature fluctuations inherent in CO2 systems place higher demands on the flexible connection structure. A vibration absorber truly suitable for CO2 applications—specifically an all-stainless steel (All SS) model—must do more than just connect piping; it must absorb compressor vibrations during long-term operation, minimize fatigue at weld points, reduce noise transmission, and maintain a stable seal under high-pressure conditions.

​In CO2 (R744) refrigeration, a Stainless Vibration Absorber is required to manage working pressures that can exceed 120 bar in transcritical systems. Unlike traditional units, CO2-rated absorbers utilize multi-ply bellows and high-density 304/316L stainless steel braiding. TIG welding is mandatory to ensure the joints can withstand the high discharge temperatures (often above 100°C) without losing structural integrity.

In my years on the factory floor and troubleshooting at project sites from Bangkok to Berlin, I’ve seen one recurring nightmare for HVAC engineers: a catastrophic refrigerant leak caused by a snapped pipe. More often than not, the culprit isn’t the compressor or the piping itself—it’s a poorly selected or incorrectly installed vibration absorber for refrigeration equipment​.

When a procurement manager looks at a quote for an All SS Vibration Absorber, the first question is always: "Why is this 15% more expensive than the copper-end version?" As an engineer, my answer is simple: How much does it cost you to send a technician to a remote site to fix a leak and recharge 50kg of refrigerant?