Pipework Sizing Guide

Check your hydraulic pipework size and rating

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Hydraulic pipework design guide

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Suggested exercises and observations

1. Use the above app to size the appropriate pipework for your worked project example.

♦ Set the maximum flow rate using the left-hand slidebar.

♦ Set the maximum working pressure.

♦ Set the maximum fluid velocity. There should be a different standard value for the pressure, return and suction lines of every hydraulic system.

♦ Select the pipe material.

♦ Select the most appropriate pipework size from the list provided.

♦ Repeat for the pressure, return and suction lines and compare with your project example if one is available.

For more details on using this app see our pipework design guide section.

Experiment 1: There are many different types of hydraulic fittings available.

Question 1: Why would you select one fitting type over another?

Each industry, market or manufacturer generally has a standard type of fitting that they are happy works in their equipment. Often there are modern versions of these fittings that must be used.

Experiment 2: Pipework is sized to ensure the flow rate does not exceed a specific fluid velocity.

Question 2: Is the maximum rated fluid velocity the same in all pipes?

No. The pressure, return and suction pipes will all have different fluid velocity values.

Experiment 3: Hydraulic fittings have continuously developed over many years with significant improvements to reduce leakage and failures.

Question 3: Describe some of the improved features of modern fittings?

Face seals provide a safer, more reliable joint than cutting rings. Including an elastomer seal reduces leakage.