Products and services Water and Heat Archive Other products Connectors for water meters and heat meters Connectors for water meters and heat meters Please note: This product has been discontinued! About product Technical data Files for download Application: Fittings with a non-return valve are used for the installation of water meters and heat meters. ModelNipple size [g]Nut size [G]LengthConnector with DN15 mm valve½”¾”34 mmConnector with valve DN20 mm¾”1”46 mmConnector with valve DN25 mm1”1¼”58 mm Product catalogues Water and heat - catalogue 16.22 MB pdf Certificates Couplings with non return valves - PZH certificate 270.85 KB pdf