Mack Valves was formed from a need to supply relief valves to the Australian Naval Fleet, back in 1939.

Today, Mack continues to support the Defence needs of Australia, with high quality and reliable solutions for the Submarine fleet.  Being submersed for up to two months, the valves must be manufactured to exacting standards to ensure no product failures, and the valves can withstand the potential harsh conditions from being in a combat situation.

With 80 years of design and material experience, Mack is able to manufacture most types of valves needed in the naval fleet, to exacting standards.