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Are Zone Valves Interchangeable

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  • 02-10-2013 12:50pm
    #1
    youtheman
    Registered Users Posts: 1,269 ✭✭✭


    Folks,

    I have Drayton Zone Valves on my CH, and they are proving to be far from reliable (there are two springs on each actuator arm, and on every single actuator one of the spring anchor points is broken). I'm thinking of changing over to a different type, I just need to know if I go for another brand will it have the same overall dimensions (flange to flange, if you know what I mean, so that I don't have to modify the pipework).


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    #2
    Froststop
    Registered Users Posts: 445 ✭✭Froststop


    youtheman wrote: »
    Folks,

    I have Drayton Zone Valves on my CH, and they are proving to be far from reliable (there are two springs on each actuator arm, and on every single actuator one of the spring anchor points is broken). I'm thinking of changing over to a different type, I just need to know if I go for another brand will it have the same overall dimensions (flange to flange, if you know what I mean, so that I don't have to modify the pipework).

    All zone valves can give problems from time to time. Myson are most popular and my be worth a try.


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    #3
    youtheman
    Registered Users Posts: 1,269 ✭✭✭youtheman


    Froststop wrote: »
    All zone valves can give problems from time to time. Myson are most popular and my be worth a try.

    But are they are 'like for like' fit ?.


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    #4
    Froststop
    Registered Users Posts: 445 ✭✭Froststop


    youtheman wrote: »
    But are they are 'like for like' fit ?.

    Most are, but measure the valve body and check against new ones to be sure.
    You may find there are very slight difference in lengths. If you measure from the inner of the threads across the body of the valve to the thread end on the other end and you won't be too far off the mark.


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    #5
    Dtp1979
    Registered Users Posts: 12,730 ✭✭✭✭Dtp1979


    youtheman wrote: »
    But are they are 'like for like' fit ?.

    Lengths can be similar but the main issue I find is threads are different. So you can't take off one valve and always expect the old nut to work on the new valve


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    #6
    freddyuk
    Registered Users Posts: 1,110 ✭✭✭freddyuk


    You should not install a valve which does not have separate actuator body? If you can remove the actuator then you need to get the same brand. They are different. Danfoss are easy to repair in my experience.


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    #7
    Froststop
    Registered Users Posts: 445 ✭✭Froststop


    Dtp1979 wrote: »
    Lengths can be similar but the main issue I find is threads are different. So you can't take off one valve and always expect the old nut to work on the new valve

    Good point, I have come across it on occasion.


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