초록 ▼

An adjustable fluid flow regulator that can be adjusted for operating at two different operating pressures includes a casing having a chamber therein, an inlet and an outlet communicating with the chamber, and a valve for controlling fluid flow between the inlet and the outlet. A flexible diaphragm

An adjustable fluid flow regulator that can be adjusted for operating at two different operating pressures includes a casing having a chamber therein, an inlet and an outlet communicating with the chamber, and a valve for controlling fluid flow between the inlet and the outlet. A flexible diaphragm in the casing is connected to the valve for operating the valve in response to pressure changes in the chamber. The fluid flow regulator further includes a spring, a removable hollow cap aligned with the spring, and a link adapted to fit in the cap. The link, when installed in the cap, engages the spring to cause the spring to apply a biasing force against the diaphragm that is higher than when the link is not in the cap. According to the method of this invention, the adjustable fluid flow regulator is adjusted for use at two different operating pressures by installing or removing the link from the hollow, removable cap.

대표청구항 ▼

[ What is claimed is:] [1.] An adjustable fluid flow regulator for selectively regulating the flow of fluid at two different pressures, the regulator comprising a casing having a chamber therein, an inlet and an outlet communicating with the chamber, a valve for controlling fluid flow between the in

[ What is claimed is:] [1.] An adjustable fluid flow regulator for selectively regulating the flow of fluid at two different pressures, the regulator comprising a casing having a chamber therein, an inlet and an outlet communicating with the chamber, a valve for controlling fluid flow between the inlet and the outlet, a flexible diaphragm in the casing, connected to the valve, for operating the valve in response to pressure changes in the chamber; a removable hollow cap; a removable link adapted to fit in the hollow cap, and a spring for selectively applying biasing pressure against the diaphragm, the spring engaging the link to apply a biasing force against the diaphragm when the link is in the cap, and the spring extending into the cap when the link is not in the cap.