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thank you all for your posts got a heating engineer comming going to upgrade the lot :)

mrdubya what is the number for the valve for the duoval i need valve and actuator

thats what was in when i opened it what size should it be duh looked at the box just saw the 5 amp rating on it :oops:

its only got 4

sachwell box ,damfoss 103 timer,duoval 3 port valve,unknown tank stat

just looked for a number on the valve there is not one where i can see it

the picture of the box is nearly the same as mine but it has another set of contacts on the left centre of the box and a fuse

its leaking from the valve under the actuator must have been leaking for a while the actuator is corroded

thank you for your help

just had a thaught what about changing to a sunvic pack pre wired will it be to difficult?

to change the box will it be a heating engeneer or electrician i need

is the 5 th wire an earth ?

yes it all goes into a sachwell box with relay

hope you can help i would like to change the 3 port mid position valve which is an old sunvic duoval the unit has to be at least 20 year old . it has started to leak i have looked everywhere to find another i think it may be obsolite the actuator has 4 wires white to pin 13, orange to pin...