Standard DIN EN 1503-4, Publication date: 2003-03 Valves - Materials for bodies, bonnets and covers - Part 4: Copper alloys specified in European Standards; German version EN 1503-4:2002

Standard DIN EN 331, Publication date: 2011-08 Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings; German version EN 331:1998 + A1:2010

Standard DIN EN ISO 228-1, Publication date: 2003-05 Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation (ISO 228-1:2000); German version EN ISO 228-1:2003

Standard DIN EN 10226-1, Publication date: 2004-10 Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads - Dimensions, tolerances and designation; German version EN 10226-1:2004

Standard DIN ISO 2768-1, Publication date: 1991-06 General tolerances; tolerances for linear and angular dimensions without individual tolerance indications; identical with ISO 2768-1:1989

Standard DIN 3292-1, Publication date: 1984-06 Fittings for domestic installation; nonferrous metal union nuts

Standard DIN 3431, Publication date: 1986-06 Gas valves; angle pattern ball shut-off valves with compression coupling

Standard DIN 3436, Publication date: 2012-06 Gas valves for gas installations - Nozzles with conical sealing and gasket

Standard DIN 3586, Publication date: 2003-10 Thermally activated shutting-off devices for gas - Requirements and testing

Technical rule DVGW G 260, Publication date: 2008-05 Gasbeschaffenheit