Environmentally Sealed DS4 First Stage, adjustable XTX50 Second Stage with 40" Hose.

Apeks DS4 First Stage:
Environmentally dry sealed version of the US4 1st stage with 4 medium pressure ports and one high pressure port. Adjustable intermediate pressure. Finished in highly polished chrome. 1st stage ports: 4 x 3/8 UNF and 1 x 7/16 UNF. A work horse with years of tested and proven experience now preferred by the most demanding technical divers.

Apeks XTX50 Second Stage with 40 Hose:
Fully diver adjustable pneumatically balanced 2nd stage with venturi and breathing resistance control. Heat exchanger - suitable for both warm and cold waters. Front cover constructed from a new two-shot high strength plastic, improving the durability of the most vulnerable part of the demand valve. Right or Left hand hose configuration.