Abstract: A safety and regulation valve unit for a gas installation, particularly a heating installation, comprises a duct through which the fuel can flow between an inlet and at least one outlet. An on-off fuel-valve is interposed in the duct between the inlet and the at least one outlet, and there is a movable device for controlling the valve as well as an actuator acting on the movable device in order to move it towards a first operative position in which it cooperates with the on-off valve in order to put the inlet into communication with the outlet. The actuator comprises a reversible motor with a rotor connected to a male-and-female screw coupling acting on the movable device to translate it towards the first operative position and to control the on-off valve.

Abstract: In a valve unit provided with a straight-cylindrical valve housing having a thick barrel portion and a thin head portion; an inward-facing valve seat on the upper edge of the head portion; and an upper edge on the head of an internal valve element, the upper edge engages the inward-facing valve seat when a lower passage in the valve housing is defined.

Abstract: The invention is a valve assembly designed for relieving pressure on a process structure, such as a reactor vessel or a pipeline. The valve structure consists of two separate pressure relief units, and each unit includes a pressure relief valve that is positioned between an inlet valve and an outlet valve. A single mechanical actuator means is used to open and close both pairs of valves, so that when one pair of inlet and outlet valves is fully closed, the other pair of inlet and outlet valves is fully open.

Abstract: A vapor introduction system having an internal combustion engine which has an exhaust gas blow by hose connected to the intake of the engine. A fitting having a flexible hose is mounted on the cap of the windshield wiper fluid reservoir, with the hose extended to the bottom of the reservoir. A T-shaped coupling having an adjustable valve is connected with the hose to the fitting. The valve has a stem threaded into the coupling and a cone-shaped cap operable to adjust the size of the annular passage through which vapors and air flow from the windshield washer reservoir to the intake of the engine.

Abstract: An isolation steam valve arrangement for use on the exhaust side of a steam urbine for directing exhaust steam therefrom to steam operated auxiliary equipment and for relieving or venting steam to the atmosphere. The valve arrangement includes a casing, or body provided with a single inlet and plural outlets. A main valve between the inlet and one of the outlets is selectively positionable from fully open to fully closed for controlling steam flow through one outlet for operating auxiliary equipment. A normally closed vent valve between the inlet and other outlet is adapted to open upon closure of the main valve to establish open communication between the inlet and other outlet in order to continuously vent to the atmosphere a low volume of steam from upstream of the main valve. A normally closed pressure operable relief valve is adapted to relieve to the atmosphere a high volume of pressurized steam from upstream of the main valve.

Abstract: The invention relates to a multiple coupling for lubricating systems, preferably progressive lubricating systems of motor vehicles, especially tractor trailer units. The multiple coupling a plug box and a plug, with the help of which several lubrication pipes may be interconnected. In order that the plug box-plug-combination may be used for variable number of lubrication pipes, a special valve arrangement has been provided with the help of which the desired number of passages of lubrication pipes is opened or closed.