How can you convert psig to foot head for circulator sizing charts?

To convert psig (pounds per square inch gauge) to foot head, the appropriate method is to multiply the psig value by 2.31. This conversion is based on the relationship between pressure and the height of a fluid column, where 1 psi is equivalent to approximately 2.31 feet of water column.

This conversion factor emerges from the understanding that the weight of water creates pressure. Specifically, for every psi of pressure, you can elevate a column of water by approximately 2.31 feet. Therefore, if you're operating with pressure measurements in psig and need to understand the equivalent height in terms of a water column for applications such as pump sizing or circulator selection, using this multiplier gives you the correct height in feet.

This relationship is vital for ensuring that systems are appropriately sized and function optimally within their designed parameters. Understanding these conversions is crucial for steamfitters when interpreting specifications on circulator sizing charts.