Saliva Ejector Valves

Saliva ejector valves and the tubing that feeds them. The cheapest part on the unit and the one most likely to be running past its useful life.

Buying guide: Saliva Ejector Valves Show less

What the SE valve is actually for

Practice Tip #8 draws the line clearly: the HVE moves volume, the saliva ejector moves a low, continuous trickle. Using an SE where an HVE belongs is how a practice ends up with aerosol in the room and a dry operatory field it does not have. Most SE valves are a simple slide or lever body with an O-ring and a screen — a few dollars, a two-minute swap.

Backflow, and the reason to replace rather than clean

A saliva ejector held in a closed mouth can draw back. The valve body is not the defence against that — practice is — but a worn valve that does not close fully makes it more likely, and a cracked body is not cleanable. Replace rather than rebuild anything under about fifteen dollars. Flush the line at the end of every day; Practice Tip #112 explains why a periodic shock treatment does what daily flushing on its own does not.

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