G 459-2 (A)
Gas Pressure Regulating Installations with a Maximum Upstream Operating Pressure of 5 bar and a Maximum Design Flow Rate of 200 m<sup>3</sup>/h under normal Conditions on Service Lines; Functional Requirements
Gas-Druckregelungen mit Eingangsdrücken bis 5 bar und Auslegungsdurchflüssen bis 200 m³/h im Normzustand in Netzanschlüssen; Funktionale Anforderungen
Brief description
This technical rule applies to the planning, construction, testing, commissioning, operation and maintenance of gas pressure regulators within the scope of DVGW Code of Practice G 459-1 with inlet pressures up to 5 bar, whereby the design flow rate is a maximum of 200 m/h in the standard state, and which are used to supply residential, office and social buildings as well as mixed-use buildings and buildings of public, cultural and commercial facilities, insofar as they are comparable to domestic use, and which are operated with gases from the public gas supply, office and social buildings as well as mixed-use buildings and buildings of public, cultural and commercial facilities, insofar as they are comparable to domestic use, and which are operated with gases from the public gas supply whose properties comply with DVGW Code of Practice G 260, with the exception of liquefied gas. Industrial production plants are excluded. This Code of Practice is a more detailed technical rule within the scope of DIN EN 12279. If the inlet pressure of the gas pressure control is > 5 bar or the design flow rate is > 200 m/h in the standard state, or for applications that are not comparable with domestic use, DVGW Code of Practice G 491 applies. DVGW Code of Practice G 495 also applies to the maintenance of gas pressure regulators in operation. Gas pressure regulators within the scope of DVGW Code of Practice G 459-1 are part of the gas network operator's operating facilities in accordance with the Low Pressure Connection Ordinance (NDAV). DVGW Code of Practice G 600 must also be observed. The requirements of this worksheet also apply if the gas pressure controls are located in the area of the customer system. This Code of Practice does not apply to gas pressure regulators that were put into operation before the publication of this Code of Practice.
