La Marzocco 'GS3' Water Reservoir Gasket Brand_Lohberger and the center relief valve

and the center relief valve must be locked open to vent and allow the pump to draw water properly

mounts on two studs with two 1/8" pipe connections

Rancilio Group Head

Direct gauge replacement

La Marzocco 'GS3' Water Reservoir Gasket Brand_Lohberger and the center relief valveLa Marzocco GS3 Water Reservoir Gasket A replacement sealing gasket for the GS3's water reservoir connection, sold as the gasket only (no other hardware included). COMPATIBILITY Fits: La Marzocco GS3 water reservoir Replaces: MZ_F2012 INSTALLATION Quick DIY swap when servicing the reservoir connection. PRO TIPS If your reservoir weeps at the connection point, this gasket is the cheap first fix to try before assuming a cracked reservoir or fitting.