By adding a diaphragm to this environmental
sealed DF300E unit, the spring chamber is sealed completely and can
effectively improve the performance of the regulator for diving under
extreme conditions. Regardless of whether the pressure of the tank is
500psi or 3000psi, this 1st stage regulator will always offer divers consistent air. The intermediate pressure internal adjustments allow
divers to choose any one of the 2nd stages to connect with Promate
DF300E regulators in today's market.
Recommended 2nd Stage: OC350, OC300, OC450, OC400
Advantages: reliable, ideal regulator for dirty water environment
and all diving conditions. Environmentalized to prevent freeze-up.
Users: ice divers, tech divers, pro divers
Regulator rebuild kit: p/n RS300E
