What fittings are required to plumb the evoUV in?

The 15,25,30,55 and 75watt models come supplied with 1.5" hosetails, you can also hard plumb using 1.5" BSP male fittings. You can find these fittings at the following links

single-union-threaded-male-to-plain-female

converter-threaded-male-to-plain-female

If you are plumbing to black pipe from a plumbers you will need adapters which you can find here

reducing-sleeves-imperial-pressure-to-waste-pipe

The 110watt professional UV has no fittings supplied. It requires 2" solvent weld pressure pipe which can adjusted to suit your personnel requirements.