The DHH-690 Diver Water Unit contains a powerful heat exchanger to transfer heat to divers working at depth for prolonged periods.
Honeywell Aquastats allow the dive tender to adjust temperature for the diver, while a 316 stainless steel submersible pump ensures a regulated supply of saltwater passes through the heat exchanger.
This unit is more powerful than the DHH-350 Shallow Water Hot Water unit, and can support multiple divers in deeper water.
