Spill Rate / Water Discharge Table

Why should you be concerned that it only takes 10 minutes to fill a backyard swimming pool? MORE

 Spill Rate / Water Discharge Table – measured in gallons per minute (gpm)*

Spill Rate / Water Discharge Table – measured in gallons per minute (gpm) *
Nominal Hose ID Diameters – Inches
PSI 1″ 1-1/4″ 1-1/2″ 2″ 2-1/2″ 3″ 4″ 6″ 8" 10" 12"
20 26 47 76 161 290 468 997 2895 6177 11108 17943
30 32 58 94 200 360 582 1240 3603 7689 13828 22335
40 38 68 110 234 421 680 1449 4209 8981 16151 26089
50 43 77 124 264 475 767 1635 4748 10131 18220 29430
60 47 85 137 291 524 846 1804 5239 11180 20105 32475
75 53 95 154 329 591 955 2035 5910 12611 22679 36633
100 62 112 180 384 690 1115 2377 6904 14731 26491 42790
125 70 126 203 433 779 1258 2681 7788 16617 29883 48270
150 77 139 224 478 859 1388 2958 8593 18336 32975 53264
200 90 162 262 558 1004 1621 3455 10038 21418 38517 62216

*The above values are for the flow through a 100 foot length of hose with a straight smooth bore rubber hose. This table is a calculated estimation. Differences in actual flow rates may be affected by hose and environmental conditions.

1600 gallons per minute flow thru a 3” hose at 200 psi. That’s 16,000 gallons in 10 minutes – enough to fill a standard size backyard swimming pool. Unless your job is filling swimming pools, then you should be concerned because 10 minutes is how fast a fitting ejection becomes an EPA nightmare. What’s in your hose?

Avoid the nightmare. Use the pressure rating chart and coupling selection guide to choose the appropriate fitting for the job.