4 cylinder OPSO upgrade kit


  • 2 hoses and ‘T’ pieces
  • Must only be used with changeover valves that have OPSO.

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.

To Order Call 01604 777511
SKU: 601239 Category:



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