This arrangement is based on a 50 mm dia inlet manifold with multiple integral isolators, each leading to a branch. Branches are supplied with water meters (or not, in the case of units installed in the Thames Water catchment area), together with isolators, flow measurement points and NRVs. The inlet manifold is provided with inlet isolator, strainer and pressure reducing valve. 

Assembly at Works is followed by hydraulic testing, prior to delivery.