This octopus is designed on the same platform as the high performance 221 2nd-Stages. The Hollis 221 Second Stage Regulator is a Pneumatically Balanced Demand Valve Design. The Hollis 321 Second Stages also has an Adjustable VENTURI System (A.V.S). This simple Dive/Pre-Dive Switch allows the diver to Adjust Inhalation Effort so the Second Stage won't Free-Flow during shore entries or long surface swims. The Control Knob has an Easy Grip for Precise Adjustments even while Wearing Gloves. The Hollis 321 Second Stage Housing is manufactured from Durable ABS/Polycarbonate. Regulator also comes equipped with a Patented Orthodontic Silicone Rubber Mouthpiece for Comfort and Reduced Jaw Fatigue. The Hollis 321 Octopus Regulator has a High Visibility Yellow Front Cover for Easy-Identification in an Emergency Out-of-Air Situation. The Regulator comes with a 36' (91cm) Low Pressure (LP) Hose with 3/8" Threaded End. The Hose is also Bright Yellow for Identification as the Alternate Air Source. Regulator is covered by a 24 month limited warranty.
The Hollis Balanced 321 Octopus with 36" (91cm) Yellow Hose is most used by customers who consider themselves to be a Advanced among others. The Hollis Balanced 321 Octopus with 36" (91cm) Yellow Hose is popular because customers like the following qualities of the Hollis Balanced 321 Octopus with 36" (91cm) Yellow Hose: Comfortable Mouthpiece, Does not leak, Easy To Connect, Easy To Retrieve, Easy To Use, Reliable.
This product has a limited warranty of 24 months.