Abstract:
A thermostatic flow control device including a safety valve and a thermostatic valve controlling flow between an inlet and main and pilot outlets in a casing, and a selector dial for moving a cam member within the casing, the safety and thermostatic valves each having an axially movable member engaging a cam surface of the cam member such that movement of the cam member provides simultaneous pilot and on-off control of the safety and thermostatic valves.
Abstract:
A thermostatically operated valve assembly including a pair of valves in a cascade arrangement with one of the valves being a relatively small flow valve movable between closed and opened positions with a snap action in accordance with minor temperature variations and with a relatively larger valve being provided with a gradual opening movement in accordance with major temperature variations.
Abstract:
A control apparatus has a dial for operating a rotatable device and has a push button radially mounted in the dial for operating a depressible device when the dial is in a selected position.
Abstract:
A thermostatic flow control device including a safety valve and a thermostatic valve controlling flow between an inlet and main and pilot outlets in a casing, a selector dial for moving a cam member within the casing, and a lever pivotally and slidably mounted in the casing and selectively controlled by the cam member, the safety and thermostatic valves having members engaging the lever and axially movable by pivoting and sliding movement of the lever, respectively, such that movement of the selector dial provides simultaneous pilot and on-off control of the safety and thermostatic valves.
Abstract:
A flow control device having a manually operable valve movable between a plurality of controlling positions for delivering fluid flows to main and pilot outlets; a pressure regulator assembly downstream of the manually operable valve regulates the pressure of the pilot flow as well as the main flow and the manually operable valve selectively permits the pilot flow to bypass the pressure regulator. Upstream of the pilot flow outlet the pilot flow line is provided with restricting orifices to prevent an excess of a non-regulated pilot flow and to dampen a regulated pilot flow as is necessary during initial compensation of the regulator.
Abstract:
A dual valve arrangement wherein a pair of fixed valve seats are sequentially engaged by a corresponding pair of valve members, which are concentrically formed on a unitary diaphragm, a portion of which has opposite sides that are pressure equalized when both of the valve elements are in the closed position.
Abstract:
A thermostat assembly including a tubular housing, a thermal element including a heat expansive and contractive, elastomeric material, an actuator adapted to operate a control device through an open end of the housing, and a retainer slidably disposed within the housing and engaging the thermal element and the actuator to move the actuator in response to expansion and contraction of the material. Various embodiments of the thermostat assembly utilize a removable retainer capsule enclosing the material and an operator member, a thermal element having a central bore to permit withdrawing of the actuator into the housing with heat increase, and a hollow cylindrical retainer to accommodate a temperature responsive switch.
Abstract:
THIS DISCLOSURE RELATES TO CONTROL DEVICE FOR THERMOSTATICALLY SUPPLYING FUEL TO A BURNER MEANS AT ONE CONSTANT RATE DURING NORMAL DEMANDS ON THE BURNER MEANS AND FOR THERMOSTATICALLY SUPPLYING FUEL TO THE BURNER MEANS AT AN INCREASED CONSTANT RATE DURING ABNORMAL DEMANDS ON THE BURNER MEANS, THE CONTROL DEVICE HAVING ITS FUEL FLOW RATE CHARGED BY A TWO STAGE PRESSURE SENSING REGULATOR THAT CONTROLS A MAIN PRESSURE OPERATED VALVE MEMBER OF THE CONTROL.