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Old 09-21-2012, 09:52 PM
muddywater muddywater is offline
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Knock on couplings

Anybody using these for 2" pipe? I am leaning toward trying more of these on 2" maybe even 1 1/2" pipe. I just don't feel good about telescoping couplings on these. I guess the only downside is we would have to keep a tool on the truck to bevel the edges.
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Old 09-21-2012, 10:13 PM
Irrigation Contractor Irrigation Contractor is offline
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I have banned my guys from using them on mainline period! LOL

1" to 2" can be used for laterals, but in the end our rule is to do it right with all new fittings if possible.
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Old 09-22-2012, 12:33 AM
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mitchgo mitchgo is offline
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I don't know this term tho i've probably seen it. Link?
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Old 09-22-2012, 05:43 AM
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Wet_Boots Wet_Boots is offline
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Quote:
Originally Posted by mitchgo View Post
I don't know this term tho i've probably seen it. Link?
we don't need no steenking link




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Old 09-24-2012, 09:42 AM
ArTurf ArTurf is offline
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I used them on a main line at a golf course one time. As far as I know they held up, I haven't been back there in a while.
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Old 09-24-2012, 05:40 PM
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CAPT Stream Rotar CAPT Stream Rotar is offline
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I've put those on a main line in Hollistan, MA @ some shotty Builder site..

Nothing like dripping 100+ declining trees off a rotor zone..

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Old 09-24-2012, 09:30 PM
agrostis agrostis is offline
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I think those fitting's are junk. Steel only. The problem is you can't get ductile iron fitting's smaller than 2 1/2 inch's.
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Old 09-24-2012, 10:08 PM
muddywater muddywater is offline
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Originally Posted by agrostis View Post
I think those fitting's are junk. Steel only. The problem is you can't get ductile iron fitting's smaller than 2 1/2 inch's.
Why are they junk? A couple local golf superintendents swear by them.
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Old 09-24-2012, 10:39 PM
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HokieAg07 HokieAg07 is offline
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Harco Knock Ons are all I use on 2 1/2" and larger. Easy as pie.
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Old 09-24-2012, 10:43 PM
agrostis agrostis is offline
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Why are they junk? A couple local golf superintendents swear by them.
Unless you have a perfectly straight run of pipe that never move's, those thing's will split along their construction seam. I try to use ductile iron only.
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