Abstract: A single coil, two operator controller for simultaneously actuating two spaced apart magnetically responsive operators has a bar extending between the spaced apart operators, and a coil on the bar, between the operators for creating a magnetic field for moving the magnetically responsive operators. The single coil, two operated controller is particularly suited for operating a gas valve.

Abstract: 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.