Poly water service, Old Timer's advice needed

[Stuts]

My house was built in 1971 and has a black plastic (polyethylene?) water main under a 400 foot driveway. I have a sample of it and it is 1.375" ID (1 3/8") with .200 wall which equals 1.775OD. I have not found any hose barbs or fittings to adapt this to NPT or any other standard fittings. Has anyone heard of this type of tubing and know where or what i can use to tie into it? The house burned down in the 2018 fires and I don't want to trench 400' down my driveway. If I have to I will turn a stainless barb and weld it to a pipe stub but would rather find something off the shelf. Any ideas anyone?

 

[Terry]

I would guess that a barbed 1-1/4" fitting works for that.
In poly they made 1" ID and 1-1/2" ID but I've never heard of 1-3/8". I have seen poly expand over time with high pressure.
In my neighborhood we've all been replacing our poly lines as they go bad.

 

[Sponsor]

 

[Reach4]

Looks like 1-1/4 SIDR 7 polyethylene pipe. That size, that Terry suggested, should be easy to find barbs for. Heat the end of the pipe in boiling water to get the barb in. Use two worm gear stainless steel clamps with the worm gears on opposite sides.

http://www.jmeagle.com/sites/default/files/PEWaterandSewer_web.pdf See table 7.

 

[Jeff H Young]

Got a question for you. The service is 50 years old . Your house burned down. I know those aint cheap houses. arent you running fire sprinklers ? We typicaly use the same line to feed house and fire sprinklers . 1 1/4 I dought big enough , up to fire sprink desighn I hope its withen spec.
Im sorry for your loss hope you had code upgrades if so the insurance might have to pay for adding the sprinklers ( I hope) which might cover a new water service as well

 

[MACPLUMB]

His house was burned in the WOOLSEY FIRE in 1918 no fire sprinkler would
save a house or any building in that type of fire, it would over OVERWHELM
the sprinkler system

CA. LIC. PLUMBING/FIRE SPRINKLER CONTRACTOR SINCE JAN 1989

 

[Jeff H Young]

missed the point master plumb.. Im saying I think he will require firesprinklers? is that 1 1/4 line 400 foot long going to supply enough volume ? no need for new supply? You being lic sprinkler installer might know if sprinklers are needed in malibu ca. I allways had to increase my water service line inch and a half or 2 inch on big homes with long service. but its been awhile.