I have a leak at the back of the dhw pressure differential valve, i changed the dhw pressure valve but it looks like it is leaking from a gland on the brass manifold where the dhw pressure differential valve connects with the spring clip. It only leaks when the running the hot water. Can this gland be changed or will i need to replace the whole manifold. Also can anyone tell me the part no. for the gland, if it is available on it's own?
Thanks.
Thanks.