Underground hydrant

The underground hydrants sunk into the ground provide an easily accessible supply of fire-fighting water for the fire brigade.

Underground hydrant

Underground hydrant


  • Maintenance
  • Installation
  • Consulting
  • Acceptance
  • Planning & project engineering
  • Commissioning
  • Instruction / Training
  • Support from CWS fire protection officer


  • Different versions of underground hydrants available

Underground hydrant - advice & maintenance

Underground hydrants are fittings that are "sunk" into the ground and connected to the water supply. They are usually located under a street cap and are used by the fire brigade to draw water for firefighting on site. Underground hydrants are marked from the outside by signs indicating their exact location. A standpipe is required to draw off water and is attached to the underground hydrant by means of a claw. The main shut-off valve is operated from above with a hydrant key. There are the following variants of underground hydrants:

  1. Height-adjustable underground hydrants
  2. Tele-hydrants (nominal diameters DN 80 and DN 100)

Maintenance of underground hydrants

Underground hydrants must be inspected by a competent person at least once a year. With a maintenance contract from CWS Fire Safety, regular maintenance is carried out automatically, ensuring that important deadlines are always met.
Important specification for installation and operation: When installing and operating underground hydrants, the regulations of DIN 14462 and the Drinking Water Ordinance apply. A direct connection to the drinking water installation is not permitted in every case. We will be happy to advise you on all questions relating to drinking water protection in connection with underground hydrants.

All-round service from CWS: CWS Fire Safety offers you the planning, installation, acceptance and repair of underground hydrants. Please contact us if you have any questions about firefighting water systems and hydrants. We are at your service throughout Germany.


  • No spatial restrictions, as the underground hydrant can be lowered into the ground

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