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    bob tenthousand's Avatar
    bob tenthousand Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 21, 2009, 02:54 PM
    OK to use 2 check valves on 1 line?
    I just replaced my sump pump.

    The old pump used an in line check valve. I decided to keep it because it would allow me to replace the new one someday without flooding the work area.

    I also used a screw in check valve because it enabled me to attach the pvc pipe to the pump easily. Plus I had one laying around and I did not have a pvc sump pump connector. Basically, I used what I had.

    Can anyone see a problem with this? None appeared during several test cycles. Plus, it was very quiet.
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
    Ultra Member
    		  
    #2

    Jan 21, 2009, 08:45 PM

    It will be OK to use two check valves in one line. Make sure that the direction of flow is the same on both.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #3

    Jan 22, 2009, 06:54 AM
    Quote Originally Posted by bob tenthousand View Post
    I just replaced my sump pump.

    The old pump used an in line check valve. I decided to keep it because it would allow me to replace the new one someday without flooding the work area.

    I also used a screw in check valve because it enabled me to attach the pvc pipe to the pump easily. Plus I had one laying around and I did not have a pvc sump pump connector. Basically, I used what I had.

    Can anyone see a problem with this? None appeared during several test cycles. Plus, it was very quiet.
    If both check valves are working then, while your set up may be usual, I can find no fault with it. Good luck, Tom
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