APPARATUS AND METHODS TO DISPENSE FLUID FROM A BANK OF CONTAINERS AND TO REFILL SAME

摘要

A valve has a bonnet with a bonnet cavity and a first pressure sensing
passageway extending
between the bonnet outer surface and the bonnet cavity. A base is coaxially
coupled to the bonnet. A
fluid inlet passageway extends between the base outer surface and the base
cavity. A fluid outlet
passageway extends between the base outer surface and the base cavity, and a
second pressure sensing
passageway extends between the base outer surface and the base cavity. A valve
element within the base
and bonnet cavities controls a fluid flow path through the fluid inlet
passageway and the fluid outlet
passageway. The valve is suitable for use in a cascade system includes a
manifold having a fluid outlet
port to dispense fluid and a fluid valve engaged to the manifold.