Automobile re-fiuelling device for natural gas has filling station installed in closed space provided with safety sensor system for automatic closure of gas supply line
DE19859422A1
Domestic gas pipe connector with join seal comprizes graphite seal squeezed tight at screw join between pipes prior to completion by cap nut thrusting off connector collar.
DE19835362A1
Wall penetration
DE19804947A1
Connector for connecting gas pressure controller to gas meter