These Clamp-On Flow Meters are simple to install. Just drill a 17mm (11/16”) hole in a horizontal section of pipe and clamp it on with the two stainless steel clamps provided. Easily disassembled for cleaning. Maximum temperature 48ºC. Maximum pressure 120 psi. Dual scale, LPM & GPM. Replacement float fits all. Made in USA.
These meters must be mounted horizontally. The required lengths of pipe upstream and downstream of the meters are below:
| Model | Upstream | Downstream |
| WM10 | 250mm | 120mm |
| WM1 | 380mm | 190mm |
| WM2 | 500mm | 250mm |
| WM4 | 750mm | 380mm |
| WM5 | 100mm | 500mm |
