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OT Water line

A

Aaron Halfmann

Member
Hey guys
looking for some advice. I plan on running a water line out behind my house yet before it freezes. Was wonder what size and psi rating you guys have used for your needs. Any advice appreciated. Thanks in advance!
 
3/4 inch CPVC burried 12" below frost with a 4" slab of Blue (soil rated) foam insulation the full trench width on top of gravel , used to bed the pipe. Jim
 
We have used black plastic flexible pipe, not sure of the PSI rating. We have a 1-1/4" pipe running about 300 feet total from the well house to the buildings that has been in the ground for about 20 years. It was buried in sand to cushion it and it runs about 5 feet deep here in nothern NY.
Zach
 
I have run 1" schedule 40 PVC about 800' to 14 hose bibs and 6 zone valves irrigating orchards and vegetable gardens. Well pumps 19 gpm's at 40-60psi

Works great.

Irrigation is controlled to only run 1 zone at a time. I'm typically the only one using this system and only run 1 hose bib at a time. I have had 2 sprinklers, from hose bibs, going at the same time and if I tried the 3rd it's starts dropping the water pressure.

To give you a good opinion we need to know how much water you need, (gallons per minute), what your supply is, (pipe size, pressure in pounds per square foot and gallons per minute flow rate), and how far you need to run, (feet, yards, miles, etc.).
 
I'm looking to run 1 inch line. Most places I have checked have it rated for 100 PSI and rating another at 160 Psi. Was wondering with a standard 2" house well which one to use. It will just be for a single frost free hydrant.
 
Find out the freeze depth foryour area, and go at least that deep, and go 6" deeper under driveways, where there"s no insulating grass turf. Make SURE you spread a smooth bed of sand or fine dirt, or small base rock fines, to bed the pipe in. Prime all joints before glueing with the correct primer for the pipe material you"re using. Let it sit for a few minutes, til it"s dry, but not too long. The best glue I have used is blue Wet-or-Dry glue. But make sure the glue and the primer match the pipe material, whatever you use. Press it, hold it together beccause it"ll try to come apart. And pressure test the line overnight before you bury it. Backfill has to be free of large rocks, debris, etc. The backfill is not the place to get rid of rocks.
 
Forgot one thing. Do not thread a plastic fitting into the threaded frost-free bottom conection, the threads'll crack in a few months as the ground settles, and the 79-cent piece will cause you one big job digging it up and replacing it. Thread in a brass fitting, not galvanized, then a 6" brass nipple, then a rubber-bushing coupling to make the transition from plastic to brass. Trust me.
 
3/4 in plastic water line and brass ONLY for connectors. They make brass a connector with threads on one side and 3/4 plastic on the other side. Go to a plumbing supply store and tell them what you are going to do and they will set you up. If youdo it any other way you will regret it. Also you need some clear stone for around the base of the hydrant so it has a place to drian down. 3/4in clear works the best. I dont know where you are but make sure you are buried deeper then your deepest frost.
 
I like the black pipe that comes on a roll, put in some 1" or 1 1//4" the larger pipe will resist damage better and you will never have pressure drop.
 
I used this water line to the garden and it's rated at 180psi. It came in a 100 foot coil. I bought it from a local a local plumbing supply.
This size is 3/4 they probably have larger sizes. I would need to look to see what company made it. If I were you I would install it inside pvc pipe as been mentioned. Hal
a85217.jpg
 
I buried about 150' of PVC several years ago and have had nothing but trouble with it. I learnrd the hard way to attach a short length of flexible tubing (rated for burial) between the hydrant and rigid PVC supply line to prevent stress cracking at that joint. Got real tired of digging 4' in frozen ground...
 
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