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zimmatic
01-26-2009, 11:40 AM
I have a client that irrigates 15 acres. The well has a 8" steel casing rising out of the ground 3' and then the 3" discharge pipe rises through that by about 1.5'
It is not a frost free well so in the fall I sent down a suction device that evacuated the water 15' down so the pipe doesnt crack and send the pump plunging to the bottom.
Anyways, at the top of the discharge pipe is a 3" tee. The top of the tee it has a relief valve, the bottom side obviously connected to the pump and the 3rd side has a 3" X 3" nipple to a 3" check valve then another 3" X 3" nipple screwed into it.
At the end of all that pipe is another 3" tee. the top has a 3" plug the side goes to the well. the bottom has a 3" X 6" nipple then to a 3" steel union.

When the well driller installed the well the 3" irrigation main line was ran 1.5' away from the well casing. The owner told me when the (well driller) fininshed he decided to connect the well to the irrigation system.
After the union is a 3" X 3' steel pipe that has iron flanges welded onto they are welded onto the well casing. The 3" pipe is connected to the irrigation system
In the winter all the pipes above and to the well have to be removed to winterize the well. In the spring the owner tells me that the frost seems to move things just enough that it is a pain to put all the pipes and check valve back in place.

I have 2 problems
1st backflow prevention a single checkvalve not the greatest
2nd problem pipes that move enough to cause reconnection headaces. Could that be avoided using a braided pipe/tube. If so where could I get one or who makes one.

I need to correct this problem since I will be taking care of the system from now on.

Again ask questions I will try to answer them best of my abilities,

Wet_Boots
01-26-2009, 11:46 AM
What pressures are you dealing with? You can get flexible sch 40 PVC tubing with spiral-wound reinforcing.

DanaMac
01-26-2009, 11:48 AM
What pressures are you dealing with? You can get flexible sch 40 PVC tubing with spiral-wound reinforcing.

Is that some of the stuff they use for water features? The return pipe back to the top?

Wet_Boots
01-26-2009, 12:07 PM
It is vacuum-rated for use as suction line for pumps. I see it glued into sch 40 fittings in swimming pool applications. Also in soil-dewatering arrays around excavation sites. And it is used for ponds. Not sure whether all flavors of the stuff are UV-resistant.

zimmatic
01-26-2009, 12:13 PM
pump produces at the top end 102 psi right before the well shuts off
opperating pressure with a zone on (I40's) at the well 75psi Only 3 zones have 5 I40's the rest have 4 heads per zone

TRILAWNCARE
01-26-2009, 12:51 PM
Are these what your looking for.

http://www.redvalve.com/rv/index.php?/content/view/44/100/

http://www.redvalve.com/rv/index.php?/content/view/50/98/

http://www.procoproducts.com/Gen-Rubber_Pipe/gen-rubber_pipe.html

http://www.metraflex.com/flex_coup.php

Wet_Boots
01-26-2009, 01:12 PM
I would think one of those 'bulletproof' compression couplings that Purp used could deal with the pipe movement, and not have any problems dealing with high pressures and/or water hammer.

TRILAWNCARE
01-26-2009, 01:15 PM
Here is the braided version

http://www.flexicraft.com/product.php?id=25

This one is on Ebay. But should only be 2 1/2" ID with the dimensions that the seller describe.

http://cgi.ebay.com/FLANGED-END-BRAIDED-PIPE-CONNECTER_W0QQitemZ260351698846QQihZ016QQcategoryZ42933QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

132948

Sprinkus
01-26-2009, 01:20 PM
This is the stuff they use on the big ranches we work on.
http://www.godwinpumps.com/bauer-pipe.html

Waterit
01-26-2009, 01:45 PM
I'd go with what Sprinkus suggested - no flanges to line up or bolts to tighten. Looks very similar to king connectors used on dredging pump hoses, which are pretty flexible, UV-resistant, and rated for 3000 PSI burst/2500 PSI suction.

TRILAWNCARE
01-26-2009, 01:50 PM
As for your back flow problem..

Here is a new 3" FEBCO RPZA that is being auctioned off starting bid $1380.00. Or buy it now for $2500.00

http://www.bid-on-equipment.com/detail~id~35797.htm

New from FEBCO your looking at close to $3400.00 with the shut off valves.

FEBCO RPZA (http://www.febcoonline.com/Products/860_Large_Diameter)


FEBCO Price Sheet (http://www.febcoonline.com/pdf/PL-FEBCO.pdf)

zimmatic
01-26-2009, 02:02 PM
Thanks for all the info my questions have been answered

Kiril
01-26-2009, 02:05 PM
HFS .... a question answered without a single OTP.

Wet_Boots
01-26-2009, 02:08 PM
By the by, there is also a variation of the 4-90's repair that would fit here, using 6 elbows, and at least one union. (worth doing, if only for the photo opportunity :))

TRILAWNCARE
01-26-2009, 02:16 PM
Thanks for all the info my questions have been answered

Your welcome.

TRILAWNCARE
01-26-2009, 02:18 PM
HFS .... a question answered without a single OTP.

The old dogs must have been taking there mid day naps....:sleeping::sleeping:

TRILAWNCARE
01-26-2009, 02:21 PM
By the by, there is also a variation of the 4-90's repair that would fit here, using 6 elbows, and at least one union. (worth doing, if only for the photo opportunity :))

Piker........

Wet_Boots
01-26-2009, 02:26 PM
Piker........What, you aren't going to look for an auction for six elbows and three unions?

TRILAWNCARE
01-26-2009, 02:43 PM
What, you aren't going to look for an auction for six elbows and three unions?

I will leave the more complex research up to you.....

Wet_Boots
01-26-2009, 02:49 PM
I will leave the more complex research up to you..........while you go look for Mario Bros cosplay.....
http://tbn3.google.com/images?q=tbn:9I4flVxzNdGDuM:http://www.japanator.com/~japanator/elephant/ul/2738-550x-MarioCosplay12.png.jpg

Without A Drought
01-26-2009, 03:26 PM
Wow. it only took 8 posts after the on topic remark to go completely off topic.

Wet_Boots
01-26-2009, 03:35 PM
Wow. it only took 8 posts after the on topic remark to go completely off topic.Obviously, we're slipping.

Mike Leary
01-26-2009, 03:45 PM
Obviously, we're slipping.

Sorry, was waxing the motor home.

Waterit
01-26-2009, 09:32 PM
It was only about 12 posts in the Rainbird timer help thread. Poor HO didn't have a clue what kind of rock he had overturned (90 posts, 600+ views in that thread)

TRILAWNCARE
01-27-2009, 12:13 AM
It was only about 12 posts in the Rainbird timer help thread. Poor HO didn't have a clue what kind of rock he had overturned (90 posts, 600+ views in that thread)

Having some basic understanding of anything from the OP in the Rainbird timer help thread could have saved that thread from reaching such high proportions. :dizzy: