TUSA RS609 Regulators
The RS609 pairs TUSA’s balanced R600 diaphragm first stage with the S0009 second stage. Its adjustment control, enlarged purge and Ortho-Conscious mouthpiece are useful details for divers who want accessible controls and a comfortable recreational setup.
Features and benefits
- Balanced diaphragm first stage. The balanced mechanism regulates the supply to the second stage as cylinder pressure falls, helping keep the breathing response consistent through the dive.
- Click-spring adjustment. The inhalation control provides distinct adjustment positions, helping you make a deliberate change to breathing resistance.
- Accessible purge. The large purge button is easy to locate and press when clearing the second stage, including when wearing gloves.
- Ortho-Conscious mouthpiece. The shaped mouthpiece supports a comfortable hold and helps reduce the need to bite down firmly.
- Stainless steel faceplate. The mirror-polished cover adds a durable metal face to the second stage.
- Hose choice by colour. The white version uses a flexible white Miflex hose. Check the selected colour and supplied configuration when choosing your regulator.
Setup and compatibility
Connection: Yoke. Choose the fitting that matches your cylinder valve and its pressure rating. Cold-water suitability must be checked for the exact version; do not transfer the DIN version’s rating to a yoke setup.
The R600 environmental kit is optional. This yoke listing should not be treated as the separately specified DIN cold-water configuration.
Care, rinsing and storage
After each dive, connect the assembled regulator to a scuba cylinder and open the valve to pressurise the system. Keep it pressurised while fully submerging the first stage, second stages and connected hoses in fresh water. This allows thorough cleaning of the exposed components and hoses while helping prevent water entering the internal air passages, where it can cause corrosion and damage. Keep the cylinder secure throughout cleaning.
For routine cleaning, Dive Gear Australia recommends Cressi Neoclean Wetsuit Wash Neoprene Cleaner 500 mL or Revivex Wetsuit Shampoo 10 oz to help remove salt, chlorine and everyday residue. Dilute according to the cleaner’s label, then rinse thoroughly with fresh water.
Keep the regulator pressurised throughout washing and rinsing. Lift it out of the water and dry the first stage and cylinder connection before closing the cylinder valve, releasing the pressure and disconnecting. Fit the clean, dry dust cap, then allow the regulator to dry in the shade. Store it with the hoses loosely curved, without sharp bends or tension.
Before each dive, inspect the mouthpiece, hoses and connections for wear or damage. Have your regulator serviced by an authorised TUSA technician at the interval specified in its manual, or sooner if it leaks, is damaged or its breathing performance changes. Leave internal adjustments and repairs to a qualified technician.






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