초록 ▼

A direct acting pressure regulator controls the flow of a gas from a high pressure source to a low pressure device. Gas is delivered from the regulator at a predetermined outlet pressure. The regulator includes a body having a high pressure inlet and defining a seat. A bonnet is engageable with the

A direct acting pressure regulator controls the flow of a gas from a high pressure source to a low pressure device. Gas is delivered from the regulator at a predetermined outlet pressure. The regulator includes a body having a high pressure inlet and defining a seat. A bonnet is engageable with the body to define a piston chamber within the body and the bonnet. The bonnet has a regulated gas outlet. A piston is disposed within the piston chamber and defines a gap between the piston and a wall defining the chamber. The piston is movable between an open regulator condition and a closed regulator condition. The piston includes a plug having a sealing surface engageable with the seat and movable toward the seat to the closed regulator condition and away from the seat to the open regulator condition. The plug includes axially disposed openings therein for communicating gas from around the plug to a central longitudinal bore in the piston. The piston has 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 urges the piston to the open regulator condition.

대표청구항 ▼

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, the body having a guide sle

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, the body having a guide sleeve formed therein; a bonnet engageable with the body to define a piston chamber within the body and the bonnet, the bonnet having a regulated gas outlet and defining a stop surface therein, the body guide sleeve extending into the piston chamber; a piston disposed within the piston chamber and in part in the guide sleeve, the piston defining a gap between the piston and a wall defining the piston chamber, the piston movable between an open regulator condition and a closed regulator condition, the piston including a support 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 seal element being formed from a resilient material, the support having axially disposed openings therein for communicating gas from around the support 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, the piston including a shoulder for engaging the bonnet stop surface at the open regulator condition; a spring disposed in the piston chamber for urging the piston to the open regulator condition; a first seal disposed between the sealing element and the piston chamber at about the guide sleeve; a second seal disposed between the impingement surface and the piston chamber; and a pin valve disposed in the central longitudinal bore of the piston. 2. The direct acting pressure regulator in accordance with claim 1 wherein the sealing element is a disk.3. The direct acting pressure regulator in accordance with claim 1 wherein the high pressure inlet and the regulated gas outlet are collinear with one another.4. The direct acting pressure regulator in accordance with claim 1 wherein the spring is a coil spring.