PRMS explained — pressure reduction & metering station

Primary: multi-stage pressure reduction, low-noise regulator trims, lower gas velocity (e.g. 40 → 20 m/s), no sharp bends.
Secondary: silencers, acoustic insulation of the pipe, thick-walled pipe, sound-insulated building.

A two-run gas pressure-regulating station with metering, laid out like the DVGW G 491 example. Click any component to zoom in and read what it does, the design rules and what to check in maintenance — or take the guided tour, which follows the gas from the inlet to the outlet.

Click a component · numbers match the G 491 example legend

Inlet pressure (upstream of the regulator) Outlet pressure Heating water Sensing line Closed valve (filled)

Simplified teaching schematic based on the DVGW G 491 example station. Values are typical, not design data — always follow the station documentation and the current DVGW / EN rules.