Fluid handling – With heating or cooling of the system – Air heated or cooled
Reexamination Certificate
2006-05-30
2006-05-30
Hepperle, Stephen M. (Department: 3753)
Fluid handling
With heating or cooling of the system
Air heated or cooled
C137S505250
Reexamination Certificate
active
07051755
ABSTRACT:
An adjustable floating seal piston type pressure regulator valve of the type wherein a spring biased piston engages a floating seal in a regulator body valve chamber to open and close a valve seat outlet in the valve chamber. The valve seat comprises a separate member from the regulator body and is adjustably movable in the valve chamber toward and away from the piston, such that movement of the valve seat toward the piston serves to lower a regulated outlet pressure and movement of the valve seat away from the piston serves to increase the regulated outlet pressure. The valve seat member is moved by an adjustment screw that is externally accessible by an adjustment tool. A tubular expansion chamber surrounds the regulator body and provides an enlarged expansion chamber that reduces valve recycle time. Convolutions or ribs in the expansion chamber housing enhance heat through transfer to the valve gases.
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Hepperle Stephen M.
Marshall Excelsior Company
Varnum Riddering
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