Manifold Basics

The Central System Manifold

Located in the dental office cylinder storage room, the manifold is a primary component of the nitrous oxide central system. In general, it serves to join multiple compressed-gas cylinders. One or more N2O and O2 cylinders may be attached to the manifold, but only one line for each gas exits the manifold. The exit lines carry the gases under low pressure (50-55 psi) to operatories plumbed for N2O-O2 delivery. Access to N2O and O2 in individual treatment rooms is achieved via operatory outlets.

Cylinder storage room components typically include a manifold with safety pressure relief valves, regulators for each cylinder, an alarm monitor gauge, a cable, an N2O-O2 supply source (cylinders purchased from a gas supply company), tank restraints, various hoses and gas lines.

Conveniently located somewhere between the cylinder storage room and the operatories plumbed for nitrous oxide is a zone valve that can be accessed in case there is reason to shut down the supply of gas immediately. There is also a wall or desk alarm control panel typically located near the front desk. The alarm panel can be used to manage the central gas supply system.

Note: When a manifold system is remotely located, a zone valve is required to be installed in a readily accessible area of the dental office.

View Central System Schematic

The Portable System Manifold

Located on the portable unit, the manifold is a primary component of the nitrous oxide system. Two or four N2O and O2 gas cylinders (depending on whether the portable is a 2-cylinder or a 4-cylinder system) may be attached to the manifold, but only one line for each gas exits the manifold. The exit lines carry the gases under low pressure (50-55 psi) to service N2O-O2 delivery.

Components of the portable unit typically include a manifold with safety pressure relief valves, regulators for each cylinder, an alarm monitor gauge, an N2O-O2 supply source (cylinders purchased from a gas supply company), tank restraints, various hoses and gas lines.