Pressure Loss Chart For PE Tubing

An important consideration for both Drip Irrigation Systems and Sprinkler Irrigation Systems is pressure loss over distance for distribution, lateral and drip lines. The following chart illustrates basic pressure loss and flow capacity for both Poly Tubing and Schedule 40 PVC pipe.

Poly Tubing	Max. Flow GPM (GPH)	PSI Loss/100ft	Sch 40 PVC	Max. Flow GPM (GPH)	PSI Loss/100ft
1/2"	4.6 (276)	8.8	1/2"	4.6 (276)	7.7
3/4"	8.2 (492)	6.3	3/4"	8.2 (492)	5.6
1"	13.4 (804)	4.8	1"	13.4 (804)	4.2
1 1/4"	23 (1380)	3.1	1 1/4"	23 (1380)	3.1
1 1/2"	33.8 (2028)	2.9	1 1/2"	33.8 (2028)	2.9
2"	52.3 (3138)	1.9	2"	52.3 (3138)	1.9

Ref 280

Drip Irrigation Systems, Poly Tubing, Pressure Loss, Irrigation Direct Canada, Irrigation Supply Store