Glossary



  • Vent pipe

    A pipe open to the atmosphere which exposes the system to atmospheric pressure at its boundary. Interpretation given in Schedule 2: of the Water Supply (Water Fittings) Regulations and Scottish Water Byelaws read more

  • Verifiable blackflow prevention device

    "A verifiable backflow prevention device" means a device, consisting of one or more backflow prevention elements, which can be tested in-situ; usually achieved by the provision of test ports immediately upstream, and between, the mechanical read more