Installation: FAQs

How do you find out what the system maximum operating pressure is?

One way is to measure the supply pressure at a tap directly supplied from the mains at a time when there is little demand, such as at night.

Please note:

  • This will not take into consideration any transient or surge pressures which may be generated within the system. For example water hammer resulting from the rapid closure of a valve within the system.
  • Water fittings must be able of accommodating 1½ times the maximum operating pressure.





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Uncontrolled if downloaded. This is informative, non-statutory guidance and intended for general guidance purposes only; it is subject to change.

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