Archived 19 July 2019
Product Identifiers
Aqua Lung Regulators with a serial number lower than H043301, Yoke only with the ACD feature that have not had an annual or other service. This includes - Legend ACD - Core ACD - Titan LX ACD
The Hazard!
The shutter valve in the ACD assembly may not be tightened to the recommended torque setting. The shutter valve may work loose from the yoke retainer while trying to remove the first stage from a cylinder. When the shutter valve is unscrewed enough, it can disrupt the gas flow from the cylinder valve.
The defect can lead to loss of breathing gas, which may result in severe injury or death.
What to do...
Stop using your ACD Regulator and take it in to the nearest Authorised Aqua Lung retailer or Dive Centre to confirm it is in good working order.
If your regulator has had an annual or other service from an authorised technician, the ACD assembly would have received a service and be torqued to the correct specifications as per the service manual.