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  1. #1
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    Horrible orifice problem



    Hi everyone

    I have a system which is pumping down on an Alco valve.

    Can anyone tell me if orifices on Alco valves are similar to Danfoss ones, i.e when the pin of the orifice is pressed in the orifice should let by.

    Thanks



  2. #2
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    Re: Horrible orifice problem

    Valve is otherwise fine, have tested with N2

  3. #3
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    Re: Horrible orifice problem

    Hi Contactor

    there are some pictures on my page under pictorials that give a nice view of exactly how a txv works

    when a unit is pumping down if all else is ok (charge/drier ect) its normaly the power head assembly has lost it charge

    R's chillerman
    If the World did not Suck, We would all fall off !

  4. #4
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    Re: Horrible orifice problem

    Thanks, can you tell me if orifices on Alco valves are similar to Danfoss ones, i.e when the pin of the orifice is pressed in the orifice should let by.

  5. #5
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    Re: Horrible orifice problem

    Unscrew the power assembly put a small coin into it and screw it back on. If it doesnt pumpdown the power assembly is duff.
    Cheers
    Stu.
    And yes the bellows should act on the spring and open the valve f not check the inlet screen and the cage.
    Tool's ? check ! Condom's ? check !
    If you can't fix it , f*ck it !!!

  6. #6
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    Re: Horrible orifice problem

    Those pictorals look like Danfoss. The orifices are different.

  7. #7
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    Re: Horrible orifice problem

    alco orifices have a plastic pin in danfoss ones dont and i think u size down to next size for danfoss from alco has been a few yrs since i have used an alco valve they were never as reliable as danfoss and yes principle of working is same but they block up easier
    I can fix broke but I cant fix stupid :)

  8. #8
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    Re: Horrible orifice problem

    If its looks like a tx2 valve then i expect it would work the same way, same as the old teddington ones etc.

    If in doubt change it out!

    Jon
    Mostly found in Oxfordshire, UK :)

  9. #9
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    Re: Horrible orifice problem

    Alco and Danfoss orifices are not interchangeable (on non power assemblies anyway), i found this out to my cost as a first year apprentice,still have the bruise where i got belted!

    al
    Mostly found in the southern part of this green and pleasant land.

  10. #10
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    Re: Horrible orifice problem

    The working principles exactly the same but they're not interchangeable if that was what you were looking for.
    It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.

  11. #11
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    Re: Horrible orifice problem

    Time is money, just replace it and go on down the road!

  12. #12
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    Re: Horrible orifice problem

    Good advice texas, but i already changed it. I used the old orifice, it worked ok for a few days. Im wondering if the orifice damaged the valve in some way, it looks ok, cant blow through it with the pin in, its a size 00 so maybe would be difficult anyway.

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