Patent ID: 9482357
Filing Date: 2016-11-01
CPC Classification: C02F,F16K,Y02W,Y10T

Claim Text:
1. A water distribution system, the system comprising: a thermally actuated valve comprising a housing having walls defining an inlet adapted to receive water under pressure, an outlet, a first chamber fluidly connecting the inlet to the outlet, a second longitudinal chamber having a near end and a removed end, walls defining a bore separating the first chamber from the second longitudinal chamber; a resilient seat defining a seat plane, the seat for engaging the housing, the seat adjacent the inlet of the first chamber of the housing; a thermally conductive piston having a first end that includes a nose and a second end and a longitudinal axis, the piston partially disposed in the first chamber, slidably disposed in the bore, and partially in the second chamber, the piston's longitudinal axis aligned substantially perpendicular to the seat plane; a spring for engaging the second chamber at the near end and the second end of the piston, so as to bias the piston towards the removed end of the second chamber; a fluid seal for sealing between the piston and the bore; a working material sealed in the second longitudinal chamber, a working fluid selected such that it expands when warmed and contracts when cooled and has a freezing point above the freezing point of water; a water supply system fluidly coupled to the valve;