Abstract: A radiator, particularly a skirting radiator for heating a room space is mounted just above level. An elongate panel (10) for mounting on a wall (112, 113) has a first surface (11) for facing away from the wall (112, 113) and an opposed second surface (12) for facing said wall (112, 113). A pair of longitudinally extending conduits (17) connected to the second surface (12) and for carrying heating fluid are designed so that the panel (10) is slim. Each conduit (17) has a depth less than its height. A releasably connectable upper member (34) closes a clearance between the panel (10) and the wall (112, 113) and a releasably connectable depending skirt (37) may be cut to size to take up any clearance between the panel (10) and the floor. Adjacent panels (10) are interconnected by ported connectors (70) that are retained in the conduits (17) by retaining clips (80). Ported elbow connectors (70) with one spigot (71) longer than the other are provided to render the installation process easier.

Abstract: A bolt assembly for interengaging two relatively movable elements. The assembly comprises a first component (1) which is connected to one element, and a second component (11) which is connected to the other element. The first component (1) includes a bolt (4) displaceable between engaged and disengaged positions, and the second component (11) comprises means for engaging the bolt to interengage the elements to which the components (1, 11) are connected when the first component is in a predetermined position relative to the second component and the bolt (4) is in the engaged position. The first component (1) comprises a magnetically (3) releasable latch mechanism arranged to latch the bolt (4) in the disengaged position, and the second component (11) comprises at least one source of magnetic flux (12) arranged to release the latch when the first component (1) is in the predetermined position relative to the second component (11).

Abstract: A valve lock for locking a valve spindle in a selected position corresponding to the valve being for example fully open or fully closed. The lock has a housing which is mounted on the valve body and a hub which engages and rotates with the valve spindle relative to the housing. A latch is provided between the housing and the hub, the latch being actuatable by a key to assume a latched condition in which rotation of the hub relative to the housing is permitted in one direction but prevented in the other direction. A spindle position indicator is coupled by a transmission to the hub as to be displaced as a result of rotation of the spindle, thereby to indicate the spindle position relative to the valve body. The spindle position indicator prevents actuation of the latch by the key except when the spindle is in the selected position as represented by the spindle position indicator.

Abstract: A valve lock for locking a valve spindle in a selected position corresponding to the valve being for example fully open or fully closed. The lock has a housing which is mounted on the valve body and a hub which engages and rotates with the valve spindle relative to the housing. A latch is provided between the housing and the hub, the latch being actuatable by a key to assume a latched condition in which rotation of the hub relative to the housing is permitted in one direction but prevented in the other direction. A spindle position indicator is coupled by a transmission to the hub so as to be displaced as a result of rotation of the spindle, thereby to indicate the spindle position relative to the valve body. The spindle position indicator prevents actuation of the latch by the key except when the spindle is in the selected position as represented by the spindle position indicator.

Abstract: The meter 2, e.g. a gas meter includes an inlet boss 4 providing an unregulated supply of gas via a valve means 8 which regulates the flow of gas as it passes into a chamber 6. The valve means 8 forms part of a governor which is formed integral with the gas meter. The valve means 8 includes a valve stem 12 which has a bore 18 extending throughout the length of the valve stem. The valve stem passes through the chamber 6 and through a first diaphragm 22 to which it is sealably connected and is terminated on the surface of second diaphragm 34. The first diaphragm 22 separates second and third chambers 24, 28, the second chamber 24 being in communication with the first chamber 6. The third chamber 28 is connected via the bore 18 in the valve stem 12 to the unregulated gas supply. The second diaphragm 34 separates fourth and fifth chambers 32, 38, the chamber 38 is vented to the atmosphere.