Radiator dosing

摘要

An apparatus or method of dispensing a corrosion inhibitor / chemicals into a central heating system comprises screwing a dosing device 1 into an inlet of a radiator and attaching a container 25 containing the inhibitor / chemicals to the dosing device and dispensing under pressure the inhibitor / chemicals into the radiator of the central heating system. The device comprises a male thread (2, fig 1) screwed into the radiator inlet and an o-ring (3) providing a sealed connection. The chemicals container comprises a male thread 22 screwed into a female thread 6 of the device so that a diaphragm seal 21 of the container is pierced by puncture point pins 15 on a spring 16 biased central seal pin 10. Continued screwing of the container compresses the spring and forces the central seal pin to open an end cap 12 enabling the inhibitor / chemicals to be introduced into the radiator (fig 9). The same dosing device is used for removing radiator system water enabling testing of the concentration of the chemicals in the radiator system water (figs 11 and 12). Therefore, the apparatus comprises a combined chemical dosing and testing valve of a central heating system.