Continental NH3 Stainless Flow Meters with Victaulic clamp ends or FPT ends and a side port where you can remove, inspect and clean the turbine without removing it from the plumbing. No more wrestling with pipe wrenches or balancing the Victaulic clamps trying to get the nut on the bolt. Just remove the retaining nut and the turbine assembly will come right out so you can inspect and clean it. Plug and play feature with Raven style Conxall connnection makes it easy to use with the Raven wire harness and the length is identical, so it fits into the plumbing without any major piping changes. With a range of 3-100 GPM it can handle just about any flow requirements you might need.