Hollis 500SE + DC7 Regulator, Yoke
The new 500SE utilizes a servo controlled valve to provide precision airflow and unparalleled performance for both air and trimix divers in a side exhaust configuration.
The regulator is designed to meet the strict CE standard for cold-water performance, and its environmentally sealed first stage ensures the delicate internal parts remain protected from contaminants like salt, sand, and chlorine.
The DC7 First Stage Regulator features a secondary diaphragm that completely seals the main spring cavity, providing excellent resistance to freezing or corrosion in icy or contaminated waters. Crafted from marine-grade brass with a black anodized finish, the first stage offers four low-pressure (LP) and two high-pressure (HP) ports for optimal hose routing in both back-mount and side-mount configurations. Nitrox compatible up to 40%, this regulator requires less maintenance than models that expose internal mechanisms to contaminants.
The 500SE Second Stage utilizes a servo-controlled valve in a side exhaust configuration to deliver unparalleled performance for both air and tri-mix divers. Its innovative design ensures a gentle inhale activates the valve, providing increased airflow through multiple ports. This pneumatically balanced regulator features a large soft purge cover for easy clearing, a patented orthodontic mouthpiece for comfort, and can be configured for left or right positioning without any upside-down issues.
DC7 First Stage
- High performance over-balanced first stage provides progressively greater intermediate pressure as depth and gas density increases for superior gas delivery under the most extreme conditions
- Fixed hose routing ideal for both backmount and sidemount configuration
- Environmental sealing prevents internal corrosion, contaminants, and icing of the first stage
- Designed to withstand the rigorous CE standard for coldwater performance
- Nitrox compatible to 40%
- 2 High Pressure and 4 Low Pressure ports
500SE Second Stage
- Pneumatically balanced servo valve system
- Patented Orthodontic Mouthpiece for comfort and reduced jaw fatigue
- Standard with 30″ maxflex hose
- Easily disassembled without the use of tools and underwater if necessary
- Left or right positioning – no upside down
- Boltsnap tie point