Presented below are parts required for water meter installations. Depending on size of meter and configuration of ends different parts are required. Thread end meters require couplings as below incorporating a gasket between the meter and and the connector.This is because the ends are a non-tapered mechanical thread, not a tapered pipe thread. We stock various cut-in adaptors to install meters on different pipes.Please see links to adaptors & waterworks-supply.com on links page for these items. Flanged end meters 1-1/2" & 2" require flanges as below which have a style unique to water meters and have female pipe thread for connection to the pipe or tubing in which the meter is being installed. Flanged meters 3" & up use standard 125lb drilled flanges.