公开(公告)号：US10373471B2

公开(公告)日：2019-08-06

申请号：US16152873

申请日：2018-10-05

Applicant: Watts Regulator Co.

Inventor： Jason W Doughty ,  Peter P Bouchard ,  Paul J Lake ,  Joseph M Burke

IPC: G08B21/12 ,  G01M3/16 ,  G01M3/32 ,  G01F1/28 ,  E03B7/07 ,  G01F1/56 ,  G01M3/18 ,  G08B21/18

Abstract: A leak detector assembly for use with a backflow prevention device includes a housing defining a passageway for receiving a fluid. A flap assembly couples to the housing for generating a low flow error signal indicating minimal fluid passing through the passageway and a fully actuated error signal indicating significant fluid passing through the passageway. The flap assembly includes a flap mounted in the passageway such that significant flow of the fluid moves the flap to generate the fully actuated error signal. The flap assembly also includes a sensing element on the flap to determine a presence of the fluid without movement of the flap to generate the low flow error signal based on a low flow of the fluid.