Combined water meter for large and small flow rates

摘要

The water meter has a main meter inserted in a main flow path for large rates of flow and a secondary meter (9) inserted in a bypass line for small rates of flow, with a switching valve operated for opening the main flow path when the pressure reaches a given value. The bypass line has respective connection sections (10,11) leading to and from the secondary meter, coupled to respective chambers within the housing for the main meter. The housing has a cooperating cover (4) removed for releasing the secondary meter block (18) fitted between the connection sections.