Old Weathermatic Valve

Discussion in 'Irrigation' started by Tom Tom, May 11, 2008.

  1. Tom Tom

    Tom Tom LawnSite Bronze Member
    Posts: 1,278

    Spent some time locating this valve on a Sunday. System has been in the ground since late 50's to early 60's. All copper with 2" main. Interesting how this was wired, theres only 1 wire coming into valve box.

    Can you tell from the picture how this is wired?

    DSC04054.JPG
     
  2. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,064

    Somebody's been in there before you, that's not a original solenoid WM spec'd; the early ones
    on the high end valves were round, plus, we did not have King "blues" in those days.
    Does it work? Has someone figured out how to activate a valve without a common?
    The valve itself is bullet-proof...you can replace everything currently, good ol' WM.
    Fire it up, let us know! :dizzy: I don't think it's that old, looks like a internal bleed.
     
  3. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,997

    I don't think that valve is so very old. And who made the valve box? I know the answer to the question - is this a master valve?
     
  4. NC_Irrigator

    NC_Irrigator LawnSite Bronze Member
    from NC
    Posts: 1,416

    those square solenoids have caused alot of callbacks
     
  5. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,064

    Master valves don't need a common?
     
  6. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,997

    Old square solenoids were fine - not sure when the disasters began.
     
  7. Is it using the copper piping as the ground/common back to the controller....
     
  8. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,064

    They were fine until WM sub'd them out to third world. I'm thinking about
    six or seven years ago when we experienced the "mega melt down".
    WM never admitted anything, 'till later, "geez, the water proofing where
    the wires hit the solenoid leaked," new (second "new" since this happened)
    thicker wire came out, bearcat to wire commons & still not WM quality,
    were replaced with a "new & improved" version (#3) :dizzy:Will post, me & Hank
    have a ton of them ready to fire.
     
  9. Tom Tom

    Tom Tom LawnSite Bronze Member
    Posts: 1,278

    I've been maintaining this system for 9 or 10 years. Before me, someone had changed the solenoid and wire nuts(newer parts) as Mike stated. But, the valve itself is old. Not a master valve, nor does system have one.

    I've never had to replace a valve, solenoid or diaphragm on this system-until now. The diaphragm needs to be replaced here.

    The valve box was under 4" of sod. Found it with a protech 600.

    The common wiring is clever. Although, I don't know why it was done the way its done.
     
  10. Tom Tom

    Tom Tom LawnSite Bronze Member
    Posts: 1,278

    Yep, you nailed it.
     

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