Patent ID: 7059343
Filing Date: 2006-06-13
Classification: G06Q,Y10T

Abstract:
1. A direct acting pressure regulator for controlling the flow of a gas from a high pressure source to a low pressure device, the gas being delivered from the regulator at a predetermined outlet pressure, comprising: a body having a high pressure inlet and defining a seat; a bonnet engageable with the body to define a piston chamber within the body and the bonnet, the bonnet having a regulated gas outlet; a piston disposed within the piston chamber and defining a gap between the piston and a wall defining the chamber, the piston movable between an open regulator condition and a closed regulator condition, the piston including a plug having a sealing element with a sealing surface engageable with the seat and movable toward the seat to the closed regulator condition to close a flow path through the regulator and away from the seat to the open regulator condition to open the flow path through the regulator, the plug having radially disposed openings therein for communicating gas from around the plug to a central longitudinal bore in the piston, the piston having an impingement surface in flow communication with the central bore such that gas pressure on the impingement surface exerts a force on the piston to move the piston to the closed regulator condition; a spring for urging the piston to the open regulator condition; and a pin valve disposed within the central longitudinal bore in the piston.