Ariston flexible pipe is a Cares One, Clas, Clas One, E-Combi, Genus, Genus One, E-System and Alteas One boiler spare part. This pipe, also known as a filling loop, allows the user to manually top off the water in the system if the pressure drops. External loops are typically detachable to comply with regulations, whereas internal filling loops typically include a key that can be removed to disconnect the connection after use.

Brand Name	Ariston