A backup second stage must be necklaced and supplied via a short hose. Single tank: The first stage must supply a primary second stage via a 5 to 7 ft/1.5 to 2 m hose.Consult course-specific standards and your instructor to verify size requirements.
Dual tanks/cylinders connected with a dual-outlet, non-isolator manifold can be used, but only in recreational (no decompression) diving, and are considered an alternative for a single tank/cylinder. Students may also use dual tanks/cylinders connected with a dual-outlet isolator manifold, which allows for the use of two first stages. Students may use a single tank/cylinder with a single- or dual-outlet valve. The GUE Fundamentals base equipment configuration is comprised of: a. If you’re considering or already signed up for a GUE Fundamentals class and you’re reviewing your equipment needs, you can use the list below as your reference guide.
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