1. Pipe sizing by hand, £ 60
How to use the pipe sizing charts in IGEM/UP/2 in a fully-developed pressure loss allocation method, together with some little-known tips and tricks for sizing natural gas systems up to 75 mbar operating pressure.
2. Pipe Diameter Calculator (PDC), £ 240
The PDC is a spreadsheet app for sizing commercial and domestic natural gas and LPG systems. Data can be imported and exported as files. Works in kW or cubic metres per hour. See the demo and User Guide in the Downloads section for more details. The price includes optional training and/or ongoing support with using the PDC. You can bring your own line diagram to use as a case study if you wish.
If you don't want to buy the PDC or do the training, we offer a pipe sizing service. Just email us a sketch of the system on the specification sheet in the Downloads section. £ 12 plus £ 0.60 per appliance.