4" Schedule 80 PVC Pipe Repair
- Thread starter 1190R
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mcbane
Well-known member
An expansion joint can be used for that repair but in my experience even the 150 psi rated parts can be leaky under pressure. The pipe needs to be smooth and previously buried pipe can be rough and not want to seal against the gasket.
The “right” fix is a repair clamp. Lots of $$. https://romac.com/clamps/
If your hydrant line is low pressure a fernco style shielded coupler can work. Ideally get the double length style so you get a stronger connection and two worm clamps per side.
The “right” fix is a repair clamp. Lots of $$. https://romac.com/clamps/
If your hydrant line is low pressure a fernco style shielded coupler can work. Ideally get the double length style so you get a stronger connection and two worm clamps per side.
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Busted Knucles
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- Apr 15, 2016
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Look into using flanges with stainless hardware.
Leaflessshadetree
Well-known member
Why not replace that section with a couple repair couplings and a new section of pipe?
Thank you mcbane
What kind of repair couplings do you have in mind?
Got a pic or link to share?
nadogail
Well-known member
Fernco couplings have saved the day for me many times.
mike93lx
ALLIANCE MEMBER
Man, that seems like a lot to juggle 3-5' down in a hole
RPH
Well-known member
The 4x 90’s is going to kill any flow velocity. One would think maximum flow is preferred.
Renegade1LI
Well-known member
I am assuming you’re working with class 900 pipe? Is it blue? You really need a dresser coupling, do not use a fernco, they’re not rated for that pressure. Look up dresser coupling for your pipe size.
mcbane
Well-known member
Easy to do small diameter pipe like that. 4" takes longer to apply the glue and you have a lot less time to work. You cant just muscle the partially set glue like you can with 1/2" or 3/4" PVC.
MMcClure21
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- Jan 4, 2015
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If it is a clean break just get a Hymax 2 coupling and bolt it on. If not a clean break get two and a short filler piece. The coupling requires no hold backs and will last longer than the pipe ever will.
Fortunately access is excellent
Good points
Yeah but $$$
PugetDude
ALLIANCE MEMBER
Is the break near the hydrant or in the middle of a straight run?
Middle of a straight run. Basically one 20' stick broke on both ends
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Hymax coupling, a short piece of pipe, even better if you have a piece with a bell, or a regular coupling.
Depending on what the damage is like a repair sleeve might work too, but typically most want a break cut out and spliced, we typically only use sleeves for temp repairs.
Depending on what the damage is like a repair sleeve might work too, but typically most want a break cut out and spliced, we typically only use sleeves for temp repairs.
Renegade1LI
Well-known member
If you have access just get a slip coupling, I assume it's C900 pipe then this is the way to go 4" coupling 23239 with out center stop. Do not use glue on couplings.
reader2580
Well-known member
Wouldn’t the city or whoever provides fire protection want to know about a broken hydrant line and can also provide guidance on repairs?
As mentioned in the thread title, sch 80 PVC
Possibly but pretty sure they'd refer me to the fire protection guy that drew up my plans and recommended the four 90s repair
fitter30
Well-known member
2 Dresser couplings and a snort piece of pipe if the to pipes are offset a little this will makeup the difference. This is just one brand
www.anodeengineering.com
Dresser Couplings | Anode Engineering
Dresser couplings are the original and best compression type pipe joining device with a very simple, rapid installation process.
www.anodeengineering.com
Those couplings look nice but also $$$2 Dresser couplings and a snort piece of pipe if the to pipes are offset a little this will makeup the difference. This is just one brand
Dresser Couplings | Anode Engineering
Dresser couplings are the original and best compression type pipe joining device with a very simple, rapid installation process.
Bent Handle
Well-known member
Seems somewhat shocking to me they would let you repair it yourself.
BombShelter
Well-known member
I used to sell both of these products by the truck-load, George Fischer or Spears will make a high-quality solution if there is one available. Check with them or their local distributor.
Spears Manufacturing, PVC & CPVC Plastic Pipe Fittings & Valves
ISO9001 Certified - PVC & CPVC Sch 40 and 80 fittings molded from 1/8 - 14 inch.
www.spearsmfg.com
Don't see why they wouldn't. I installed it in the first place
We still live in a somewhat free country although less so every day
Thanks!I used to sell both of these products by the truck-load, George Fischer or Spears will make a high-quality solution if there is one available. Check with them or their local distributor.
Spears Manufacturing, PVC & CPVC Plastic Pipe Fittings & Valves
ISO9001 Certified - PVC & CPVC Sch 40 and 80 fittings molded from 1/8 - 14 inch.www.spearsmfg.com
MMcClure21
Member
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- Jan 4, 2015
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Well you have to pay a lot for either labor or parts. A 4" hymax coupling is about 350-400 a stick of pipe probably a couple hundred. But labor will be less than an hour total.
Go some of these other routes and the parts might be cheaper but labor will take a lot longer and more things to go wrong.
A hymax will literally last longer than the hydrant and pipe and is installed in 10 minutes.
It's my private property
A few of the municipalities out here run restrained hymax's on all their new hydrants and repairs.
fitter30
Well-known member
Do u want to wrestle glue and cleaner and misaligned pipe or just cut and tighten.
Do the 4-90's, one at a time with a torpedo level in the ditch easy. Make up the other piece on a flat level surface and glue it up, drop it in the ditch and glue it to the other 2-90's. Trying to use repair couplings you'll end up not getting a 4" one to the right spot before it sets, been there done that.
csp
Well-known member
Four 45s would be less restrictive than four 90s.