Scuba manifold

Scuba manifold

Two 300 bar scuba cylinders connected by a downstream isolation manifold
Uses	Connection between scuba cylinders to link gas supply

A scuba manifold is a device incorporating one or more valves and one or more gas outlets with scuba regulator connections, used to connect two or more diving cylinders containing breathing gas, providing a greater amount of gas for longer dive times or deeper dives. An isolation manifold allows the connection between the cylinders to be closed in the case of a leak from one of the cylinders or its valve or regulator, conserving the gas in the other cylinder. Diving with two or more cylinders is often associated with technical diving. Almost all manifold assemblies include one cylinder valve for each cylinder, and the overwhelming majority are for two cylinders.

Several configurations are used, each with its own range of applications, advantages and disadvantages.