Leak protection

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Leak protection includes all measures to prevent or limit damage caused by leaky pipe systems that are used to transport liquids and gases . In a narrower sense, leak protection refers to water installations . The DIN 1988-200 standard refers to leakage detectors as part of tap water installations.

The German Gas and Water Association e. V. (DVGW) has developed the standard DVGW VP 638: 2004-11 “Leakage detectors for installation in drinking water installations, requirements and tests”, which deals with the requirements for detectors to protect against tap water damage.

Leak protection is characterized by three basic principles:

  1. leaks recognize
  2. Shut off the line system
  3. Alert

recognition

Various basic physical principles can be used to identify tap water damage. They are:

  1. Resistance measurements with water alarms or water sensors
  2. Flow measurements through turbines , in which volume , time or flow velocity can be used for detection
  3. Pressure measurements ; Here, damage is detected through a sudden drop in pressure or, in the case of micro-leaks, through a gradual drop in pressure.

Barrier

If a case of damage is detected, the commercially available leakage protection systems are shut off by a motor-driven ball valve or a solenoid valve .

Alerting

An alarm is issued after tap water damage has been detected. This is possible via acoustic, optical, electronic signals and via the Internet. If the user is present, damage can also be recognized by the fact that no more water can be drawn off. When the user is absent, reports via electronic signals and the Internet ensure effective alarms.

Individual evidence

  1. ↑ DIN 1988-200
  2. ↑ DVGW VP 638
  3. ^ Basic principles of leak protection , Institute for Loss Prevention and Loss Research of Public Insurers, see also: Brochure Market Overview Leak Protection , as of August 2016
  4. ↑ Detection of tap water damage , Institute for Loss Prevention and Loss Research of the Public Insurers eV
  5. ↑ Automatic locking of the installation , Institute for Loss Prevention and Loss Research of the Public Insurers
  6. ↑ Alerting in the event of tap water damage , Institute for Loss Prevention and Loss Research of the Public Insurers