3/4 supply line ??????

[64auto]

My plumber used 3/4 inch copper line to supply the garage. I have 1" pipe pvc pipe coming from the meter to the copper. Will this make me lose alot of pressure? The only reason I can figure he used copper is because this supply line will be under the concrete.

 

[MXtras]

3/4" will supply more than enough volume and pressure unless you plan to consume more than about 8 GPM.

Scott

 

[SteveL]

I wish my supply to the garage was 3/4"! My plumber was suposed to run 3/4" under the floor but I did not find out until it was too late that it was 1/2". I do not get the kind of pressure that I had hoped for.

You should be fine with 3/4".

 

[64auto]

Will the copper hold up good? I am afraid of a leak being under the lab. There Is only about 3ft under the slab.

 

[Vicegrip]

Inside dia of 1 inch PVC is close to the inside dia of 3/4 copper.

 

[Charles (in GA)]

1" PVC, sch 40 has an average inside diameter of 1.029" (and a max ID of 1.049 based on OD and min wall thicknesses) The cross sectional area of the bore (average pipe) calculates out to .8316 sq/in if I did my math correctly.

3/4 type L copper (thick wall) has an inside dia of .785" The cross sectional area of the bore is .484 sq/in

3/4 type M copper (thin wall, most likely what your plumber used) has an inside diameter of .811" The cross sectional area of the bore is .517 sq/in.

Copper specs are from the Copper Tube Handbook from the Copper Devolopment Association.

http://www.copper.org/resources/pub_list/pdf/copper_tube_handbook.pdf

The PVC specs I picked up off the web from Charlotte Pipe, a major manufacturer of PVC piping, and one other pipe supplier, Harvel.

http://www.charlottepipe.com/Documents/Industrial_Tech_Manual/Industrial_Tech_Manual.pdf

Charles