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Shut Off Valve

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Brad White_9
Brad White_9 Member Posts: 2,440
in THE MAIN WALL
I am sure it is just an oops but the photo did not "take". Was this posted last week also?

Comments

  • KAB
    KAB Member Posts: 8
    Shut Off Valve

    Its hard to explain this when I don't know what everything is called but here goes. First, my shut off valve was leaking so I drained the system and took off the old shut valve which wasn't easy. That was supposed to be the hard part. However, I purchased a replacement and even though its the same size the nut on the radiator will not catch the thread on the shut off valve. I can put it back on the old one without a problem, but it won't seal with the new one.

    I've attached a picture of the part. It looks like its on but it isn't. If I give it one more turn it will pop off. Anyway, the shut off valve came with a piece that is identical to what comes out of the radiator. Which makes me wonder if I can somehow take that piece out of the old one and replace it. Is that correct? Will it come out and if so how? The valve was hard enough to get out and that had a nut for the wrench to grab.
  • Charles G.
    Charles G. Member Posts: 113
    Shut off valve

    Sounds like you're trying to replace a radiator shut-off valve. If so, then you need to replace BOTH halves of the valve. The portion @ the radiator is machine-matched to the pipe side. There is a spud wrench designed to remove the radiator-side portion--notice the 2 nubs inside that fitting? Lacking the wrench, you can cut the nipple out of the radiator. Either way, it has to come out since it's the only way you'll ever get your job done. Or call a pro...
  • KAB
    KAB Member Posts: 8
    Shut Off Valve

    I've attached pictures. The first shows the new shut off valve attached to the radiator. It looks snug but it isn't. The second picture is the part the shut off valve came with.

    Do I have to take the old nipple out and put this one in? If so, how in the hell do you do it. You can't grasp it with pipe wrench because all you'll catch is the nut which obviously spins. Thanks.
  • Brad White_111
    Brad White_111 Member Posts: 19
    Spud Wrench as Charles said

    Only neat way to do it. The ground face of any union is made at the same time as it's counterpart such that they fit well. Even others of the same make may not fit as well. A schmear of Permatex red gasket silicone may help but not unless the fit is reasonably good to begin with. The key thing about union valves is that the threads of the body nut are fine-pitch. A lot of torque in compression can be had. Be judicious with the wrenches now!
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