
4
Maintenance Kit
The OTS Guardian Maintenance
Kit contains o-rings, valve discs,
and a valve seat needed to
perform annual maintenance. It
even includes a spare buckle.
Elbow
The low-pressure hose “elbow”
is used to re-direct the hose so
that it is aligned properly and in
correct position.
Accessories
T
he Guardian line of full-face masks (FFMs) is OTS’ most recent innovation. Unlike many other FFMs which
are modified gas masks, the Guardian was designed for diving from the ground up. Our design leverages
the best features found on other FFMs with unique added features designed by OTS.
The second stage regulator is horizontally mounted close to the diver’s face. This design minimizes the
difference in ambient pressure exerted on the second stage diaphragm and on the diver’s body irrespective of
the diver’s position—eliminating the need for manual adjustments.
A locking mechanism secures the second stage to the mask to allow removal for post-dive cleaning and
storage. As a safety precaution, the locking mechanism is located inside the mask to prevent accidental
release during diving.
Another noteworthy design feature is the use of a double face seal. This allows a single mask to fit more faces.
No more use of rubber tubing to fit smaller faces, measuring faces to order the right size FFM, or not being
able to share masks amongst large and smaller faced divers.
4
Guardian Full-Face Masks
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