Gas pipe sizing

Dave Larsen_7

can anyone tell me how many btu's can be delivered with a 3/4" gas line, 500 ft long on 2 lbs. and on 5 lbs?

Mitch_4

here you go

3/4" Black Iron, 2 PSIG: 448,000...5 PSIG: 705,000

3/4" Tubing, 2 PSIG: 196,000.... 5 PSIG: 382,000

All the above based on a 50% max pressure drop.

Mitch

bobbyg_2

Using the NFGC handbook 1988 it doesn't have 3/4" for 2# OR 5#. Questions to get you an answer:

1. Is this a straight length, or does it have elbows? You usually add 50% to allow for fittings to make it "equivalent length"

2. What kind of presure drop do you want. Generally the charts are for 10% pressure drop. (This will affect capacity - more drop = more capacity)