Tel: +44 (0) 1543 264 034 Fax: +44 (0) 1543 414 367Email:
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DRY RISERS

A "Dry Riser" is a system of pipe work and valves that enables water to be delivered for fire fighting purposes to all floors in buildings over 18 metres high. It consists of a vertical pipe with landing valves fitted inside cabinets on each floor that provides outlets, enabling the fire service to connect into the water supply.
The system can be charged with water by pumping from a fire service appliance via an Inlet Breaching valve fitted inside a cabinet on the outside of a building at ground level. There is an air release valve fitted at the highest point to enable the riser to be fully charged. On each floor there is a landing valve inside an outlet cabinet.

DRY RISER EQUIPMENT

Twin Inlet Breeching (Quadruple Inlet breeching also available )

These are manufactured to BS5041-3, inlets 65mm (2 1/2”) male instantaneous to BS 336 with integral non-return valves, 25mm (1”) drain valve, and blank caps and chains.                                  

  • Suitable for use with a 100mm (4”) rising main.
  • SG Iron with Gunmetal fittings.
  • Flanged outlets either 100mm BS4504 NP16 or 4” BS10 Table D.
  • Vertical or horizontal mounting.              

Twin Inlet Cabinets (Quadruple Inlet cabinet also available)

  • Recessed into the external wall of the building.
  • High quality steel for strength and durability.
  • Wired glass door panel and cylinder lock.
  • Attractive red polyester coated finish.

Outlet cabinet

  • High quality steel for strength and durability.
  • Painted steel box with a door with a breakable-wired glass panel and cylinder lock.

Landing Valves

  • Globe pattern valves available in horizontal, oblique or right-angle configuration.
  • Manufactured to BS 5041 and BS 5154 with Gunmetal bodies and major working parts in manganese bronze.
  • Body and internals designed for low working pressure.
  • Compact with excellent flow characteristics.
  • Flanged inlets either 65mm BS 4504 NP 16 or 2 ½” BS10 Table D.
  • Outlet 2 ½” female instantaneous to BS 336.

Air release valve

  • Provides automatic release of air from a dry riser when being charged with water and admission of air when it is being drained.
  • Inlet connection 1” male BSP to BS 2779.

Drain valve.

  • Fitted at the lowest point of a dry riser in cases where parts of the system are installed below the inlet breaching.
  • 25mm (1”) drain valve to BS 6154.

 
AFS Systems Ltd, Lichfield, United Kingdom. WS14 9EY
Tel: +44 (0) 1543 264 034 Fax: +44 (0) 1543 414 367

Email: