What is a Dry Riser?
Dry Risers are a vital piece of fire protection equipment for buildings above 18 metres. They play a critical role in delivering considerable quantities of water in a high rise building. They can however be prone to serious neglect and vandalism so it is important to have them regularly maintained and serviced.

Tone Fire & Security will carry out a full annual pressure test and six monthly visual check to the current British Standard Code of Practice BS9990 using our own dry riser testing appliance.


Dry and wet risers are checked and pressure tested to 180 PSI or 12 bar for a minimum of 15 minutes. All insets and outlets are checked for leaks. If any valves have to be replaced a further pressure test will be carried out before certification is issued.

Our Six Monthly Visual Test involves a visual inspection only as required by BS9990 and any missing or damaged items are replaced.

For large premises with hydrants on sites, Tone Fire & Security will test flow meter rates and carry out a visual inspection of the location, H plate, cover and frost valve. The BS9990 clause 7 requires checking of pits, frames, covers and surface paving round edges of frames.

Our company is fully equipped to maintain and service Dry Risers across the South and South West regions. We currently have service contracts in Plymouth, Exeter, Taunton, Bristol, Bournemouth and Southampton. Upon satisfactory completion of a test, we will issue a Certificate of Conformity together with a copy of the detailed test report.

For more information on this specialist service and how we can assist you, please get in touch.

Your legal requirement for dry riser testing
The person responsible for a building or site is legally required to maintain all fire fighting equipment, including dry risers. The British Standard Code of Practice BS9990 requires a full annual pressure test and six monthly visual check for dry risers for buildings above 18 metres and below 60 metres (buildings over 60 metres/18 storeys require wet risers). Clause 7 of the Code states that inlets, landing valves, drain valves and landing valve boxes should be inspected every 6 months and recommends that wet tests be carried out annually when the main can be checked for leaks. BS9990 also states that maintenance and repairs should be carried out by a competent person.