The OSO 17 series hot water cylinder is available in nine storage capacities. The secondary water can be heated by electric immersion heaters or indirect flow and return heating from a boiler. If required the cylinder can be supplied for connection to both heat sources. Alternatively the 17 series can be supplied without any form of secondary heating for use as a water accumulator.

Cylinders with capacities up to 809 litres manufactured in stainless steel or copper lined steel.
Sacrificial anode supplied with all stainless steel cylinders.
Cylinders over 809 and up to 8847 litres manufactured from copper lined steel.
Cylinder factory pressure tested to 15 bar.
Secondary maximum working pressure 10 bar.
All units manufactured to the international standard ISO/DIS 2694 (BS 5500).
All units supplied with 1" BSP secondary return as standard, larger sizes available upon request.