Abstract: The invention relates to a thermostat unit adapted to be attached to a radiator valve of the type having a rotatable adjusting spindle and a surrounding ring shaped housing portion. The thermostat has a rotary knob unit with a body portion and a smaller diameter neck portion which connects to the valve spindle. The thermostat has a base unit with a supporting ring portion which surrounds said rotary knob body portion and a tightening ring portion which is attachable to the valve housing. The base unit supporting ring portion provides lateral or transverse support for the knob unit body portion to prevent breaking thereof when the knob unit body portion is subjected to large transverse forces resulting from accidental blows to which the knob unit body portion may be subjected.

Abstract: An adjustment mechanism for a pneumatic timing device, that operates relay contacts with a time delay, in which a needle valve is aligned longitudinally with a bellows and the needle valve is operated by a rotatable adjustment knob that operates a visual indicator through a reduction gearing.

Abstract: An adjusting mechanism (92) is provided between a valve spool (62) and a valve actuating lever (26) whereby with the lever (26) locked in a selected position, the mechanism (92) is manipulated to move an element (99) carried by the valve spool (62) into alignment with an indicator (110) that has been predetermined to be the selected setting of the valve. With the element (99) aligned with the indicator (110), the mechanism (92) is locked so that the valve spool (62) is in the selected setting when the lever (26) is in the selected position. A lockdown apparatus (70) is provided for use in locking the lever (26) in the selected position while the adjusting mechanism (92) is being manipulated.

Abstract: The device is especially intended for a pipe supplying a fluid which must be supplied, simultaneously or alternately, with another fluid. The device comprises a tank for a control fluid which surrounds the vertical supply pipe and in which a permanent magnet moves in accordance with the amount of control fluid contained in the tank. The magnet shifts a valve member inside the supply pipe so that the valve member closes the latter in one of the end positions of the magnet. The magnet is rigid with a float which freely extends around the supply pipe. The device can in particular ensure that fuel is supplied to an engine only if oil is supplied to the latter.

Abstract: An indicator post is disclosed for an underground valve or a valve within a building. The indicator post is an improvement over existing units because it has panoramic windows allowing viewing from almost 360.degree. around the post and includes readily positionable targets for different types of valves. The indicator post has a detachable cap mounted on an outer casing, a rotatable stem member in the casing adapted to be converted to an operating stem of the valve, at least two curved viewing ports extending in a single curve around the cap, a curved target carrier within the cap, at least one flexible target strip having a valve position indication thereon, adapted to be wrapped about a portion of an outer surface of the target carrier and visible through the viewing ports for almost 360.degree. around the post.

Abstract: A fireplace damper position indicator for indicating whether the damper to the flue is open or closed to prevent building a fire with a closed damper or leaving the damper open allowing air to escape from the room. The device briefly is a magnetic holder to attach to the fireplace lintel and a hanger pivotally secured to the holder to connect to a sign. The sign has indicia indicating "open" on one side and "closed" on the other side such that when the fireplace damper is open the sign is turned to read "open" indicating the damper is open.

Abstract: A method and apparatus for testing the setting of a valve (particularly a safety valve mounted on a vessel) comprising a valve member biassed towards a valve seat, employs a pulling device which is engaged with the valve member and operated to apply a tractive force opposed to the bias which is just sufficient to separate the valve member from the valve seat. The pulling device is preferably operated by a hydraulic or pneumatic pump. The hydraulic or pneumatic pressure which is just sufficient to separate the valve member from the valve seat is indicated by a suitable gauge and is proportional to the tractive force. The sum of the tractive force and the force acting on the valve from inside the vessel and which can be calculated from the internal pressure indicated on a pressure gauge communicating with the interior of the vessel is indicative of the setting of the valve.

Abstract: An electromagnetic valve is equipped with a signal generator which operates in dependence on the positions assumed by the internal valve mechanism and which represents a relatively small unit which is attached in various positions to the housing of the magnetic actuator mechanism of the valve. The signal generator has at least one electrical switch which is actuated mechanically by a pin which transmits the motions of the armature to the switch without any appreciable interference with the operation of the magnetic mechanism. The switch is mounted within a housing on an insert which may be located in various positions relative to the housing and may suitably be a microswitch. Thesignal generator housing is sealingly attached to a mounting bracket which, in turn, is mounted on the housing of the magnetic actuator of the valve. The passage of the actuating pin is sealed against the outside by appropriate seals.

Abstract: A rotary actuator for a valve is associated with an indicator mechanism provided entirely exteriorily to the housing of the valve and out of axial alignment with the valve spindle. The indicator rotates with an actuating member of the valve and is movable relative to a surface of the actuating member to provide a visual and tactile indication of the operative position of the valve.