Pressure Loss Calculator

This calculator works out the pressure loss in valves. Enter values below including the flow rate and the pressure loss will be displayed.

Kv values


Size DN

Kv value

Flow rate

Please enter flow rate, measurement and specific gravity.

Flow rate


KvL / min

Specific gravity

Pressure lost through valve. (Bar)

All calculations are only given as a guide and this information should not be considered as replacing or superseding your duty of professional care with regard to suitability, design or specification. Glynwed Pipe Systems (trading as Durapipe UK) nor any other subsidiary of the Aliaxis Group accepts any legal responsibility for the content of these calculators.