On what sizes of the Kombi-3-plus V5010 can I mount diaphragm controller V5012C?

Diaphragm controllers V5012C0103 and V5012C0306 can be mounted on Kombi-3-plus valves sized 3/8" up to and including 11/2". Mounting on nominal widths of DN50 (2") and higher is unfortunately not possible.

Available from heating system retailers and wholesalers.