Importance

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Abstract

A double casing water meter includes a casing having an inlet port, a water chamber in fluid communication with the inlet port, an outlet port and a water discharging chamber in fluid communication with the outlet port. An inner casing has a bottom plate defining at least one water inflow passage extending between the water chamber and the water discharging chamber, and a water inflow tube opening at its opposed ends respectively into the water inflow passage and the water chamber and inclined relative to the bottom plate. A vane wheel is supported for rotation in the casing upon issuance of water from the water inflow passage and has individual vanes successively disposed in intersecting relation to the longitudinal axis of the tube in the course of the vane wheel rotation.

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First Claim