Installation Guide

25
Liquid Petroleum (LP) Gas Sizing Tables
5.3 Liquid Petroleum (LP) Gas Sizing Tables
Table 5.5 Low Pressure LP (Less than 11 in. w.c. with 0.5 in. w.c. drop)
Maximum Capacity of HOME-FLEX Underground® Poly Pipe in BTU/h (British Thermal Units per Hour) of
LiquidPropane(LP)Gas by Length of Piping Run
(Approximate 2,520 BTU/h LP Gas per 1 CFH; based on a 1.52 specic gravity of gas)
Inlet Pressure: 11 in. w.c. Pressure Drop: 0.5 in. w.c.
Intended Use: PE Pipe Sizing Between Integral Second-Stage Regulator at Tank or Second-Stage (Low-Pressure)
Regulator and Building
Run (ft.)
IPS Pipe Size (SDR)
½" (SDR 9.3) ¾" (SDR 11) 1" (SDR 11) 1¼" (SDR 10) 1½" (SDR 11) 2" (SDR 11)
10 340k 680k 1,230k 2,130k 3,210k 5,770k
20 233k 468k 844k 1,460k 2,210k 3,970k
30 187k 375k 677k 1,170k 1,770k 3,180k
40 160k 321k 580k 1,000k 1,520k 2,730k
50 142k 285k 514k 890k 1,340k 2,420k
60 129k 258k 466k 807k 1,220k 2,190k
70 119k 237k 428k 742k 1,120k 2,010k
80 110k 221k 398k 690k 1,040k 1,870k
90 103k 207k 374k 648k 978k 1,760k
100 98k 196k 353k 612k 924k 1,660k
125 87k 173k 313k 542k 819k 1,470k
150 78k 157k 284k 491k 742k 1,330k
175 72k 145k 261k 452k 683k 1,230k
200 67k 135k 243k 420k 635k 1,140k
250 60k 119k 215k 373k 563k 1,010k
300 54k 108k 195k 338k 510k 916k
350 50k 99k 179k 311k 469k 843k
400 46k 92k 167k 289k 436k 784k
450 43k 87k 157k 271k 409k 736k
500 41k 82k 148k 256k 387k 695k
k = 1,000 BTU/h EXAMPLE: 252k = 252,000 BTU/h = 100 CFH (Cubic Feet per Hour) of LP Gas
Less than 11 in. w.c. with 0.5 in. w.c. drop