It’s all down to size – measuring up pipe fittings
Please note that Rural Poly pipe is measured on the inside diameter and Metic Poly pipe is measured on the outside diameter. The diagram below shows that same size metric and rural poly pipe are different actual sizes.

For more information on the full range of Plasson fittings please use following links:
Plasson Rural Fittings (1.3MB PDF) Plasson Metric Fittings (1.0MB PDF).
We are also able to supply the full range of Philmac fittings for special orders. Note that Philmac fittings can take up to 14 days for delivery.