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RPZ Valve Servicing and Testing

An RPZ or Reduced Pressure Zone Device (RPZD, RPZ or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination due to backflow and back siphonage.

RPZ valves must be tested on an annual basis, and in some cases every six months in order to meet local water authority requirements. Tests must be carried out by an accredited tester.


  • Are fully trained and accredited to complete all RPZ works
  • Provide installation, commissioning, testing and repair services across the whole of the UK
  • Can carry out any pipework alterations to comply
  • Provide free annual test reminders
  • Competitive prices – we aim to beat any written like-for-like quotations.
RPZ Valve Servicing and Testing