PRV Sizing Tool

PRV Sizing Tool: Finding the right dimension for pressure-regulating valves

Selecting the correct valve dimension is important for securing the optimum design of the piping system. This calculation tool helps you to select the correct dimension of the pressure-regulating valve for your application.

  • First, select the valve type, pipe diameter, pressure range and the desired unit (metric or imperial) from the valve data.
  • Next, enter the desired pressure (P1 or P2) and the flow Q as control variables. 
  • The calculation tool will then display the hysteresis curve for the valve in the selected dimension. The point on the curve represents the working point created under the specified parameters. Use the slider below the curve to regulate the valve dimension and you’ll immediately find the result displayed in the curve.

If the operating point is in the yellow range, you should set a smaller dimension for your valve in the slider below the curve. If the graph does not show an operating point, check that the selected flow rate is within the maximum flow of the selected valve and that the pressure matches the pressure range selection.

Valve Information

Valve Type 
Type 586 Pressure Retaining Valve
Pipe Dimension 
16DN10 (3/8")
Pressure Range 
0.5 - 9 bar
Units 
Metric

Performance Data

Inletpressure P1 (bar) 
Flow Q (l/h) 


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Hysteresis Curve 16DN10 (3/8")
0
67
133
200
267
333
400
467
533
600
667
733
800
867
933
1000
0
1
2
3
4
5
6
7
8
9
10

Contact

Georg Fischer Piping Systems Ltd

Ebnatstrasse 111

8201 Schaffhausen

Switzerland

GF logo on the headquarters building