radiator valve regulated ter mostaticamente for facilities and central heating, single or double condott

摘要

1390903 Central heating systems FINGAL CHRISTIANSSON INGENIORSBYRA 19 Feb 1974 [19 Feb 1973] 7502/74 Heading F4U [Also in Division F2] The flow through a central heating radiator 1 is controlled by a valve comprising a U-shaped bimetallic element 7 having legs 8, 9 bearing at their free ends 10, 11 on a resilient tube 6 so as to restrict the flow of heating liquid through the latter with increase in temperature of the liquid leaving the radiator and vice versa. When the valve is applied to a single conduit circulation system, shown, all the heating liquid entering radiator 1 flows through the resilient tube 6 and the return flow passes through a concentric duct surrounding the tube and containing bimetallic element 7, before leaving through a branch 5. The loading on bimetallic element 7 can be adjusted by a knob controlled screw 16 bearing on a projection 17 from leg 8. A further projection 18 from leg 9 engages the valve housing 2. Tube 6 and bimetallic element 7 are supported by a washer 14 which also serves as a baffle to direct some of the heating liquid entering through duct 4 directly to outlet branch 5. When the valve is applied to a double conduit system (Fig. 2, not shown), branch 5 is blanked-off by a screwed plug (23) having a spherically concave inner end surface engaging washer 14. In this case the return flow passes through resilient tube 6 before leaving via duct 4.