Hydraulic System DREAMLINER Architecture(cont New controlled system operating temperature to approximately:100°-160°F Temperature control maintained by a bypass valve and fuel tank heat exchanger in each system Bypass valve is a mechanical thermostat type device located on the case drain filter module Bypass valve is designed for two positions Closed: flow through the heat exchanger(only Open a percentage of flow bypassing the heat exchanger Boeing ProprietBoeing Proprietary Hydraulic System Architecture (cont.) ◼ New controlled system operating temperature to approximately: 100 – 160F ◼ Temperature control maintained by a bypass valve and fuel tank heat exchanger in each system ◼Bypass valve is a mechanical thermostat type device located on the case drain filter module ◼Bypass valve is designed for two positions: • Closed: flow through the heat exchanger (only) • Open: a percentage of flow bypassing the heat exchanger