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The following flow rate guide has been determined using Hayward’s Flow of Water Through Schedule 80 Plastic Pipe chart. It is the responsibility of the client to ensure velocity and flow rate suitability for their application.
Always refer to and follow the specific product literature and installation, operation and maintenance instructions to determine The maximum recommended fluid velocity through any plastic piping system or product. Higher fluid velocity can create excess water hammer effect, resulting in property damage, personal injury, or even death.
| Connection | Velocity | Approx Flow Rate lt/hr | |
| DN8 | 1/4" | 5 feet/sec | 275 |
| DN10 | 3/8" | 5 feet/sec | 525 |
| DN15 | 1/2" | 5 feet/sec | 870 |
| DN20 | 3/4" | 5 feet/sec | 1,580 |
| DN25 | 1" | 5 feet/sec | 2,600 |
| DN32 | 1-1/4" | 5 feet/sec | 4,325 |
| DN40 | 1-1/2" | 5 feet/sec | 6,320 |
| DN50 | 2" | 5 feet/sec | 10,560 |
| DN65 | 2-1/2" | 5 feet/sec | 15,100 |
| DN80 | 3" | 5 feet/sec | 23,050 |
| DN100 | 4" | 5 feet/sec | 40,850 |
| DN150 | 6" | 5 feet/sec | 92,690 |
| DN200 | 8" | 5 feet/sec | 161,800 |
| Connection | Velocity | Approx Flow Rate lt/hr | |
| DN8 | 1/4" | 8 feet/sec | 440 |
| DN10 | 3/8" | 8 feet/sec | 835 |
| DN15 | 1/2" | 8 feet/sec | 1,390 |
| DN20 | 3/4" | 8 feet/sec | 2,530 |
| DN25 | 1" | 8 feet/sec | 4,150 |
| DN32 | 1-1/4" | 8 feet/sec | 6,900 |
| DN40 | 1-1/2" | 8 feet/sec | 10,110 |
| DN50 | 2" | 8 feet/sec | 16,830 |
| DN65 | 2-1/2" | 8 feet/sec | 24,200 |
| DN80 | 3" | 8 feet/sec | 36,780 |
| DN100 | 4" | 8 feet/sec | 65,350 |
| DN150 | 6" | 8 feet/sec | 148,150 |
| DN200 | 8" | 8 feet/sec | 258,850 |
| DN250 | 10" | 8 feet/sec | 407,125 |
| DN300 | 12" | 8 feet/sec | 577,750 |
Monarch Asia Pacific Pty Ltd
Trading as Monarch Industrial Products
ABN 60 141 555 688
Unit 3, 8 Bult Drive, Brendale, QLD 4500
AUSTRALIA
Phone: +61 (0) 7 3889 9949
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Release: 26:1:0