Patent ID: 7513150
Filing Date: 2009-04-07
Classification: F16K,G01F

Abstract:
1. An apparatus for measuring fluid flow, said apparatus comprising: a housing having a fluid input and a fluid output, wherein said housing is associated with a fluid source so that fluid enters said housing through the fluid input and exits said housing through the fluid output; said housing further comprising a first meter chamber and a check valve chamber suitably arranged to allow fluid to flow through the first meter chamber when fluid flows through the check valve chamber; a first metering element disposed at least partially within said first meter chamber and detachably received thereby wherein the first metering element is configured to measure the flow of fluid through the first meter chamber; a check valve module having an input side and an output side wherein said check valve chamber is one of (a) configured with a valve seat for receiving a check valve seal associated with said check valve module, and (b) configured to receive a sealing surface associated with said check valve module: wherein said check valve module is disposed at least partially within said check valve chamber; a check valve chamber plate detachably associated with the check valve chamber with fasteners external to the check valve chamber thereby securing the check valve module at least partially within the check valve chamber; wherein the check valve module is configured to open and permit said fluid to flow through the check valve chamber when the pressure exerted on the input side of the check valve module exceeds a predefined open pressure value; and wherein the check valve module is configured to prevent said fluid from flowing through the check valve chamber when the pressure exerted on the input side of the check valve module is below a predefined close pressure value.