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View Full Version : What pipe do you like to use to make up manifolds?


mojob
04-01-2007, 01:17 PM
I've seen both PVC and poly used for manifolds. It seems poly would be easier to use and easier to work with if you ever need to change out a valve body. Is there any reason not to use it for main lines and manifolds?

Hank Reardon
04-01-2007, 01:55 PM
Toro manifold tee, pvc.

Dirty Water
04-01-2007, 02:06 PM
Hand made, SCH40 fittings and cut pieces of pipe.

Poly manifolds look like ****.

This was a valve replacement that I did:

Before:

http://jholland.phpwebhosting.com/irrigation/crapmanifold.jpeg

After:

http://jholland.phpwebhosting.com/irrigation/crapmanifold4.jpeg

Mike Leary
04-01-2007, 02:22 PM
Nice re-do Jon.....gives me shivers remembering some of the botched poly
manifolds we've replaced. I think Hank Reardon has a shot of the repair
from hell, maybe he can post it.

Wet_Boots
04-01-2007, 02:35 PM
Sch 40 and toe nipples can build a compact manifold :p
http://img348.imageshack.us/img348/6049/eightvalvemanifold23fz.jpg

Dirty Water
04-01-2007, 02:39 PM
Yeah, but Dura Male Adapters can do the same:

http://www.lawnsite.com/attachment.php?attachmentid=60931&d=1153880122

Extra Credit for creative alignment with non matching valves :)

Mike Leary
04-01-2007, 02:50 PM
Sch 40 and toe nipples can build a compact manifold :p
http://img348.imageshack.us/img348/6049/eightvalvemanifold23fz.jpg

Boy, you east coasters sure save money on valve boxes!

Hank Reardon
04-01-2007, 02:57 PM
Make sure it looks as nice as this beauty:

77415

londonrain
04-01-2007, 03:09 PM
We use sch 40 pipe and fittings. I use enough pipe between fittings in case I ever have to do a repair. 3 valves is the most I ever install in a 12" Valve box or 4 in a jumbo. With all the service I do I will NEVER use a 6" valve box.....

Before and after pics on a manifold we replace.....

Mike Leary
04-01-2007, 03:10 PM
Make sure it looks as nice as this beauty:

77415

This is what happens when you turn west coasters on to poly.

Wet_Boots
04-01-2007, 03:37 PM
I'm not the only guy that stuffs a valve box, but at least my work can be serviced.

Mike Leary
04-01-2007, 03:44 PM
I'm not the only guy that stuffs a valve box, but at least my work can be serviced.

Just when you think you've seen them all!

bumper
04-01-2007, 05:41 PM
Schd 40 and fittings with schd 80 risers

Mike Leary
04-01-2007, 05:56 PM
Is that your choice.?...I like the first......big boys use copper for risers.

Mike Leary
04-01-2007, 06:06 PM
Sorry, I was out in the field w/sprinklers & I thought SPRINKLER RISERS.
O.K., Question, why do we see most installs w/Dura fittings so botched?
Should not be sold over the counter by our people...big box....o.k.

Dirty Water
04-01-2007, 06:57 PM
Horrible picture, but I repaired this last year:

http://www.lawnsite.com/attachment.php?attachmentid=61544&d=1154648155

7 Valves in a box, One of the slip crosses had cracked.

Mike Leary
04-01-2007, 07:57 PM
'nother reason to not use anything but manifold tees,

Wet_Boots
04-01-2007, 08:54 PM
Hmmmm, if I replaced my sch 40 crosses with galvanized ones, I might switch to MPT x Barb valves, and crowd even more valves in a box :)

Keith
04-02-2007, 01:04 AM
Make sure it looks as nice as this beauty:

77415

:eek: You happen to have a larger picture of that? I'm afraid I might be missing out on all that it has to offer :laugh:

SprinklerGuy
04-02-2007, 08:43 AM
I've farted around with different things since moving to cold country...

I like the Dura manifold setups....


But this is my favorite.....imagine if you had water hammer....

http://www.lawnsite.com/attachment.php?attachmentid=37197&stc=1&d=1115896485

PurpHaze
04-02-2007, 09:22 AM
We use sch 40 pipe and fittings. I use enough pipe between fittings in case I ever have to do a repair. 3 valves is the most I ever install in a 12" Valve box or 4 in a jumbo. With all the service I do I will NEVER use a 6" valve box.....

Before and after pics on a manifold we replace.....

Very clean retrofit!!! :clapping:

Being the type of large systems we have we don't manifold valves EXCEPT for when we put in a Hunter WVC set-up to keep the valves close for the controller. Then I'll put a maximum of three 1-1/2" or two 2" Hunter ICV valves in one jumbo box turned sideways. We use nothing but SCH 80 TOE nipples for our valve connections.

Mike Leary
04-02-2007, 11:30 AM
:eek: You happen to have a larger picture of that? I'm afraid I might be missing out on all that it has to offer :laugh:

I'm going to see Hank Reardon this morning, see if he can blow it up.
It was one of my jobs, we ripped it end to end. Notice the creative way of
"sleeving" the multi-stand!

JB926
04-02-2007, 09:02 PM
toro female manifold tee. This way when you have to replace a valve body down the road all you have to do is teflon the valve in your hand then just thread it in without a mess

bicmudpuppy
04-02-2007, 11:32 PM
If given a real choice, I don't like manifolds.

Wet_Boots
04-02-2007, 11:40 PM
Yeah! Down with manifolds! Make a 2-inch tap and put a honking big impact head on the chimney!

aric43085
04-03-2007, 01:10 AM
1 valve ,1- 6" round

Hank Reardon
04-03-2007, 02:31 AM
1 valve ,1- 6" round

Whiskey Tango Foxtrot! <makes note to never work in Ohio...>

You are pulling my chain, right? Even up here that valve box would go AWOL within 6 months!

Greenguy1
04-03-2007, 07:03 AM
Around here in central Mi.I am the only one to use a manifold set up,I generally use sperry manifold T they have male on one end female on other with a Mpt they are sch 40, never had a problem, I alternate the valves from one side to the other to get the clearance I need for the 6" valve cans I use, I sometimes use 12" boxes but can only get 4 valves in them and still have clearance to replace solenoids etc. I still haven't figured out why everybody buries valves all over the property and runs wire to each {plastic is much cheaper than copper} and in a year you have no idea where the valve is, can someone answer this ?

PurpHaze
04-03-2007, 09:34 AM
Maybe I'll use AC pipe the next time I feel a need for a manifold. That would be an artful project. :)

PurpHaze
04-03-2007, 09:37 AM
Whiskey Tango Foxtrot! <makes note to never work in Ohio...>

You are pulling my chain, right? Even up here that valve box would go AWOL within 6 months!

LOL... It wouldn't make it but a couple of days in our applications. In critical conditions such as high vehicular traffic areas or critical valves that can't be lost we install concrete Christy B-9 boxes with cast iron lids. That way we can always use a metal detector to find them if the Bermuda encroaches over them. :)

Hank Reardon
04-03-2007, 12:05 PM
I still haven't figured out why everybody buries valves all over the property and runs wire to each {plastic is much cheaper than copper} and in a year you have no idea where the valve is, can someone answer this ?

If you are using a 6" valve box you won't find it in a year. Not as much of a problem with a standard. Why put the valves all over the property? It's called future expansion (wire and main line in the field) and ease service (the valve is actually close to the zone it operates). Unless you are doing postage-stamp yards, running wire and main line makes sense.

Is there an easier way to say, "it's not your money"? If you added 250' of 13-strand to the price of your bid what impact would that have? Labor is expensive, not the materials.