Some valve replacement pictures

Discussion in 'Irrigation' started by Dirty Water, Oct 30, 2006.

  1. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,799

    Replaced an old champion globe valve today from a commercial property. The system is around 20 years old. Someone updated the wiring on it more recently, but these valves are pretty ancient.

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    Two 1.5" globe valves, the one on the bottom was the problem one.

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    Bad Valve removed, I spun it out of the mainline tee so I wouldn't have to redo it. The old valve was threaded into the mainline using a galvanized nipple (into PVC!) I'm surprised this has lasted so long. I spun a new SCH 80 nipple into the tee.

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    New rainbird valve plumbed in. I usually use a SCH 80 nipple instead of the male adapter, but I didn't have a TOE one on my truck in the right length. Also, the picture makes things not look square, but they are square, its just that my camera was tilted. Thats dirt on the two 90's too, not spilled primer.

    I rotated the valve because it would be rubbing the other one if they were set opposing like the old one and this configuration let me avoid using a repair fitting.

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    All cleaned up.

    Total time was just a hair over an hour.

    valve1.jpg

    valve2.jpg

    valve3.jpg

    valve4.jpg
     
  2. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    Looks like "angle" configuration instead of "globe" configuration.

    This is quite common of older systems installed, usually but not always, by plumbers. If you end up replacing a galvanized nipple with a SCH 80 nipple that is too long, one trick is to cut a section out of the SCH 80 nipple and then glue a slip x slip coupling between the two halves to get it down to the size you need. You can also do the opposite for raising a threaded valve, etc. by cutting off one end each of two standard SCH 80 nipples and glueing a coupler to join the two into one longer nipple. Never leave home without a good supply of SCH 80 nipples! :)

    If you're in a pinch and you have a TBE (standard "threaded both ends") nipple you can cut it in half. There are times when our supplier is out of TOE nipples but has standard SCH 80 nipples so we'll take those and either cut them in half if they're long enough or just cut the threads off one end if they're a shorter nipple. Now you have a TOE nipple that you can glue onto. Since we always fabricate our own swing joints with the aid of SCH 80 nipples we're never out of 1/2", 3/4" and 1" SCH 80 nipples that can be turned into TOE nipples. We also carry an ample number up to 3" diameter.


    The 'ol 90/90 "get the heck outa Dodge" lateral line reconnect. Gotta love it!

    We redid another 2" valve on a 4" main today but I've already posted similar pics in the past.
     
  3. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,799

    Yeah, they were angle valves. I'm tired :laugh:

    I don't run into 1.5" all that often, its either bigger or smaller, and I didn't expect to do this today, or I would have grabbed a few nipples at the shop.

    We don't buy TOE nipples, we just chop them in half, though you want the machined ones not the molded ones (or the other way around, but its obvious when you look at them).
     
  4. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    Personally I think the Spears nipples are the best. They have a blank leading edge on the threaded end that makes it very easy to get them started without ever risking cross-threading the things.
     

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