Atlantic Steam/Water Non-Storage Calorifiers

Ancillary Items & Options

Control Valve: The control valve should be 2-port for steam. Control valves with a "double seat" to give higher throughput do not give guaranteed shut-off and should not be used for calorifier control.
High Limit Valve: If the control valve fails in the open position the calorifier will overheat. A high limit valve prevents this by shutting the primary fluid off if secondary temperature is excessive.
Pressure Relief Valve: Needed for all unvented calorifiers and where working pressure exceeds 25 m w.g.
Anti-Vacuum Valve: Anti-vacuum valves are needed for all copper-lined steel calorifiers. They may also be fitted to copper calorifiers where there is a possibility of partial vacuum.
Automatic Air Vent: Normally only needed on unvented systems.