The Hollis 500 SE is a unique high performance side-breathing regulator that due to its unique servo assisted 2nd stage valve offering unsurpassed air delivery.
The 500SE utilise a main valve diaphragm that opens to deliver air out of 7 holes in the valve-housing delivering a higher volume of air compaired to a traditional 2nd stage.
Ambidextrous by design, the 500SE so perfect for technical diving, but equally at home being used by recreational divers that want the best in performance and with no exhaust bubblesin front of your eyes, it provides an unobstructed view.
The DC7 first stage is an overbalanced diaphragm design that is also completely environmentally sealed ensuring trouble free operation for 100's of dives. The inline design minimizes pressure drop as air is directed straight from tank valve through the 1st stage valve to the low pressure hoses causing minimal air turbulence and improving 1st stage flow.
The 500SE DC7 is available in both DIN and YOKE configurations and is nitrox compatible to 40%, it comes with industry's only free parts for life program coupled with 30 day satisfaction guarantee.
Pneumatically balanced servo valve system
Patented Orthodontic Mouthpiece for comfort and reduced jaw fatigue
Standard with 30" MiFlex Hose
Easily disassembled without the use of tools and underwater if necessary
Left OR Right positioning - No upside-down
Boltsnap tie point
First Stage Configuration: DC7
Free Parts For Life
2 Year Service interval with 1 year visual inspection