4 cylinder OPSO upgrade kit brought to you by the Calor Essentials range and created for use when upgrading from a 2 cylinder system to 4 cylinders.
Comes complete with 2 hoses and 'T' pieces and the addition of armoured hosing allows for extra protecton against general wear, sharp objects and vermin.
|2 x 0.5m W20 x POL pigtails. Must only be used with changeover valves that have OPSO
|2 hoses and 'T' pieces.