Calculates the normal pressure losses incurred during water reticulation through 12mm, 15mm 20mm & 28mm Polybutene-1 pipes.
* L/min relates to the NZBC G12/AS1 acceptable flow rates to sanitary fixtures.
| Outlet | Flow Rate L/s | Flow Rate L/min |
| Bath | 0.3 l/s at 45°C | 18 l/min |
| Sink | 0.2 l/s at 45°C | 12 l/min |
| Laundry Tub | 0.2 l/s at 45°C | 12 l/min |
| Basin | 0.1 l/s at 45°C | 6 l/min |
| Shower | 0.1 l/s at 45°C | 6 l/min |
** Allow 1m per fitting.
Pressure Loss Calculator Disclaimer:
Calculates the friction loss or pressure drop for water flowing through DUX PB-1 pipes and SecuraGold™ DR brass fittings.
No warranty of any kind is expressed or implied and no liability will be accepted by Marley New Zealand Limited for any costs arising directly or indirectly as a result or consequences of the use of this calculator.
This calculator is provided to assist users to understand the normal pressure losses incurred during water reticulation through Polybutene -1 pipes and while the formulae and calculations have been verified independently as accurate and have been based on the best available information at the time of publication no warranty of any kind if expressed or implied and no liability will be accepted by Marley New Zealand Limited for any costs arising directly or indirectly as a result or consequences of the use of this calculator.
Any queries or suggestions concerning this calculator and the information generated by it should be emailed to info@marley.co.nz
