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Thread: Pentair / Compool valve actuator mounting screws

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    Pentair / Compool valve actuator mounting screws

    I just replaced an older compool 3 way valve with a new Pentair valve. They looked essentially the same. When I went to mount the actuator I discovered that the screws used on the new valve have a different thread. I have the original 4 longer screws that hold the actuator to the valve. The original screws are 1/4-20 thread. The new screws are a self-tapping high-low thread that I had never seen before. A local fastener place suggested that I run a 1/4-20 tap into the threads and use the old screws. Before I realized the screws were not the same, I started to thread one in and it seemed to go in but was tight. Can I use the old screws? What about the tapping idea? Where can I get the right screws? I see packs of 4 for $12-$20 but I don't know if I will get the same longer screws I already have. Thanks.
    16x32 Inground Gunite Pool, 1965, renovated, epoxy painted.
    Hayward Ecostar Pump
    6' Conical Franciscan Woodworks Teak Hot tub

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    Re: Pentair / Compool valve actuator mounting screws

    Through much internet searching I have discovered that the screws needed are a 1/4-14 thread forming pan head stainless steel 1-1/2 inch screw. Nobody that I can find seems to sell that precise screw. McMaster.com has the right thread, length, and ss screw but with a self drilling tip. It would probably work but since it has no threads at the tip it may have very few threads actually doing the holding. There is a set of 4 screws with Pentair part number CVASCRJ that are apparently the right screws, but when I called an online store to inquire about quick delivery they said none of the warehouses have it and it would have to be drop-shipped from the manufacturer. They are slow he said.

    Very frustrating.
    16x32 Inground Gunite Pool, 1965, renovated, epoxy painted.
    Hayward Ecostar Pump
    6' Conical Franciscan Woodworks Teak Hot tub

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    Re: Pentair / Compool valve actuator mounting screws

    Just in case anyone stumbles upon this thread with the same problem, the screws with the self-drilling tips from McMaster.com work great. Only about $10 plus $4.75 shipping for 25 of them. I have quite a few extra so send me a message if you need some and I will sell them cheap. BTW, mcmaster.com is great. If you have not discovered them yet, you should. They have a great hardware selection, their web site selection search system works well, their prices are usually very good, and they ship immediately.
    16x32 Inground Gunite Pool, 1965, renovated, epoxy painted.
    Hayward Ecostar Pump
    6' Conical Franciscan Woodworks Teak Hot tub

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