Patent ID: 7137303
Filing Date: 2006-11-21
Classification: B01D

Abstract:
1. A fluid system pressure indicator comprising: a housing comprising a containment vessel having an interior, a fluid system coupling defining a fluid communication passage providing a first fluid path between a portion of the containment vessel interior and an exterior of the containment vessel, and a cover having an opening; a pressure communicator located within the housing, said pressure communicator having a fluid contact portion and an actuator; a fluid diaphragm sealingly engaged with the housing and the pressure communicator such that the fluid contact portion of the pressure communicator is fluidly separated from the actuator; a pressure communicator spring which exerts a continuous unidirectional pressure on the pressure communicator; a selectively movable indicator having an actuator engagement surface and at least one indicator portion which is projectable through the cover opening for extension exteriorly of the cover; and an indicator spring which exerts a continuous unidirectional pressure on the indicator, wherein the extension of said indicator is indicative of the pressure applied to said fluid contact portion.