4 cylinder OPSO upgrade kit brought to you by the Calor Essentials range.
Comes complete with 2 hoses and 'T' pieces, and made for use when upgrading from a 2 cylinder system to 4 cylinders.
Calor 4 Cylinder OPSO Upgrade Kit Specification
|More details||2 x 0.5m W20 x POL pigtails. Must only be used with changeover valves that have OPSO.|