Pressurisation Units by GMSRiverside Works • Egmont Street • Mossley • OL5 9NE
Tel. 01457 835700 • Fax. 01457 832700
e. sales@nitrogen-pressurisation.co.uk


Nitrogen Pressurisation Units

Nitrogen Spill-Back Units

Nitrogen Pressurisation Units

The "NitroMax" high specification twin pump pressurisation unit is ideal for controlling and maintaining pressure in large sealed heating systems. The water in sealed systems expands on heating (increasing pressure) and contracts (reducing pressure) on cooling. The NitroMax continuously and automatically monitors system pressure and maintains it within set limits. On heating, if pressure reaches the upper limit, the Orionís pressure control valve ("spill valve") discharges water to a covered atmospheric tank, the "spill tank". Water enters the covered spill tank below surface level. This, and the generally high temperature of the water in the spill tank, tend to minimize oxygen uptake. On cooling, as pressure falls, the unitís pumps draw water from the spill tank into the sytem to maintain pressure. The NitroMax also makes up water losses due to the small leaks, maintenance operations, vapour loss from glands etc. that are present in most large systems. Low and high pressure volt free switches allow boiler safeguarding. A built-in nitrogen-charged pressure vessel prevents excessive pump starting. High and low level switches in the spill tank warn of fault situations and protect against pumps running dry. The NitroMax is suitable for temperatures up to 180°C

The "Peakline C" is a high specification duplex pump pressurisation unit is ideal for controlling and maintaining pressure in sealed heating and chilled water systems. "Sealed" systems steadily lose small amounts of water via leaks, maintenance operations, vapour from glands etc. The Peakline C continuously and automatically monitors system pressure and tops it up as required. The unit provides low and high pressure volt free switching for boiler or chiller safeguarding. It should be installed in conjunction with an expansion vessel (see separate leaflet) to accommodate system water thermal expansion. Our sales office will be pleased to help with selection of an expansion vessel.
Peakline units are also available as a single pump model, the Peakline 'N'. Please contact us for further details.

The "Orion" high specification twin pump pressurisation unit is ideal for controlling and maintaining pressure in large sealed heating systems. The water in sealed systems expands on heating (increasing pressure) and contracts (reducing pressure) on cooling. The Orion continuously and automatically monitors system pressure and maintains it within set limits. On heating, if pressure reaches the upper limit, the Orionís pressure control valve ("spill valve") discharges water to a covered atmospheric tank, the "spill tank". Water enters the covered spill tank below surface level. This, and the generally high temperature of the water in the spill tank, tend to minimize oxygen uptake. On cooling, as pressure falls, the unitís pumps draw water from the spill tank into the sytem to maintain pressure. The Orion also makes up water losses due to the small leaks, maintenance operations, vapour loss from glands etc. that are present in most large systems. Low and high pressure volt free switches allow boiler or chiller safeguarding. A built-in accumulator vessel prevents excessive pump starting. High and low level switches in the spill tank warn of fault situations and protect against pumps running dry.

For further information, please visit our main website at www.gmsthermal.co.uk
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