Mares MR52 AST -DR XR - SXS Din Regulator Set

Mares has always been a leader in diaphragm first stage regulators. The MR52 is the perfect example, with its Tri-Material valve ensuring maximum reliability and safety. It's the only first stage in the world equipped with a double DFC to ensure maximum performance. Assembly, inspection, and any adjustments must be performed by an Authorized Mares Lab Service Center. The AST system is a dynamic technology that provides protection against water ingress into the first stage without affecting the regulator's performance during use. This non-mechanical solution ensures uncompromising reliability. AST is an internal component that is automatically activated by air pressure, so it requires no action on the diver's part. It simply opens when the first stage is pressurized and closes when it is depressurized.