Indirect Storage Cylinders by GMSRiverside Works • Egmont Street • Mossley • OL5 9NE
Tel. 01457 835700 • Fax. 01457 832700

Indirect Cylinders

Indirect Cylinders

GMS supply indirect cylinders with two types of internal coil, helical and a fixed tube heater.

Helical Coil Cylinders
A cylinder with a helical coil generally has a ‘bolted top’, which is a removable lid to enable the coil to be fitted and removed. These coils are generally suitable for pressures up to 5 BarG and primary temperatures up to 120°C. The coils are also suitable for applications with a steam primary medium, but a calorifier with a removable U-tube battery is a better option.

Fixed Coil Cylinders
GMS supply a commercial cylinder with a fixed copper coil heater. Manufactured from copper integron tube, the heater has an inlet header and an outlet header, with the heat exchange tubes between the headers. The size of the header increases in line with the increase in size of the primary system connections. The size and quantity of exchanger tubes increases in line with the duty required. The coils are suitable for pressures up to 3 BarG and primary temperatures up to 82°C.

GMS manufacture indirect cylinders using the following standard materials:

  • Solid Copper
  • Galvanised Steel
  • Stainless Steel
Typical installations for our storage cylinders include:
  • Hotels
  • Hospitals
  • Stadiums
  • Factories
  • Leisure Centres
  • Schools
  • Universities
  • Offshore
  • Process
  • Pharmaceutical
For further information, please visit our main website at
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