CONTROL APPARATUS FOR A GAS PRESSURE REGULATOR

摘要

A pressure regulator assembly comprising a pressure regulator arranged to regulate the flow rate of a gas source from a gas cylinder. The pressure regulator comprises a restriction device located in the pressure regulator, positionable to restrict the flow of gas therethrough, a biasing arrangement to apply a predetermined bias to the restriction device, a selection device operable to select a configuration of the biasing arrangement and restriction device to provide a selected gas pressure at said outlet, and a rotatable handle rotatable about an axis of rotation. A rotary control member and said rotatable handle are operable to move a control device between maximum and minimum linear positions in a direction substantially parallel to the axis of rotation. The bias from said biasing arrangement is dependent upon the linear position of the control device.

主权项

1. A pressure regulator assembly comprising a pressure regulator arranged to regulate the flow rate of a gas source from a gas cylinder, the pressure regulator comprising:
a housing having an inlet connectable to the gas source, an outlet, a conduit extending between the inlet and the outlet; a restriction device located in the conduit and positionable to restrict the flow of gas therethrough; a biasing arrangement to apply a predetermined bias to the restriction device; a selection device operable to select a configuration of the biasing arrangement and restriction device to provide a selected gas pressure at said outlet; and a rotatable handle rotatable about an axis of rotation and comprising a central boss and a graspable arm; wherein the selection device comprises a rotary control member connected to said rotatable handle such that rotational movement of said rotatable handle about said axis of rotation between maximum and minimum positions is operable to move a control device between corresponding maximum and minimum linear positions in a direction substantially parallel to the axis of rotation, the bias from said biasing arrangement being dependent upon the linear position of the control device, and wherein the angular difference in position of the rotatable handle between said maximum and minimum positions is 180 degrees or less and, when the pressure regulator assembly is located on a gas cylinder and said gas cylinder is in a substantially upright position, the rotatable handle is rotatable about a substantially horizontal axis such that said graspable arm moves in a substantially vertical plane.