The scrubber end cap contains a snap-in water trap in the shape of a cone. This shape prevents excess water from entering the scrubber canister regardless of the diver’s position in the water.
The shape of the cone also assists in mixing the exhaled gas with added oxygen into a homogenous blend. The result is even gas flow through the scrubber canister and accurate readings by the oxygen sensors.
The end cap has an O-ring and a flat seal that seals against the scrubber canister and an additional O-ring that seals the water trap. These O-rings and seals require cleaning and maintenance and should be replaced on an annual schedule at a minimum.
The end cap attaches to the scrubber body by aligning the marks on the cap and body, pressing the cap into place, and then turning the cap clockwise until the mark is aligned with the “locked” position marking.