The Aquavalve is supplied with full servicing instructions. It is recommended that the seal is greased regularly with Silicone grease which is available in an appropriate sized pack. If a major service is required, a service kit is available. The service kit includes grease and seals. Red and Blue Seals are used to alter the orientation of the fittings (Blue Seal is thicker). These are available if plumbing layouts need to be changed in the future. The spanner can often be misplaced, so when changing plumbing layouts etc, a new spanner can be supplied.