Our range of extremely popular 15mm or 1/2" and 20mm or 3/4" brass single jet meters are all made in Italy and have multiple overseas approvals. These meters are available with or without a pulse output and all meters are supplied with BSP threaded brass unions. These meters should preferably be installed horizontally with the dial facing upwards, however, if necessary, they can be installed vertically but the water flow must be upwards.