Questions and Answers for Hollis 221 DC-4 Balanced Regulator, DIN:
do you have this in YOKE? also, if i buy this and an octo and a gauge, can you guys put everything together and test it before shipping? thanks.
Bob (Certified Scuba Instructor at Scuba.com)
For inventory status or information please contact our instructors at 800-347-2822 (800-34SCUBA) All equipment requiring assembly is put together by one of our certified scuba instructors prior to shipping. Just one of the many benefits of shopping with Scuba.com
221 / DC4 Built with the same quality as the DC1, without the swivel turret, the DC3 is the ideal 1st stage for double cylinder configuration as well as perfect for single cylinders. Paired with the 221 which uses the same technology as the 212 without the dynamic adjustment . This reg set is designed for those who believe keeping it simple is best. Only for DIN valves.
Details Specs 221 Second Stage Pneumatically balanced second stage Ergonomic A.V.S. (Adjustable Venturi System) Dive/Pre-Dive Switch Patented Orthodontic Mouthpiece with High Density Bite Tabs li> DC3 1st 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 Designed to withstand the rigorous CE standard for coldwater performance Environmental sealing prevents internal corrosion, contaminants, and icing of the first stage
4 low pressure ports 1 high pressure port Yoke or 300 Bar Din Nitrox compatible to 40%