Dry/Wet Riser Systems Brochure

Rising mainsA rising main is a system of pipe work and valves that enables water to bedelivered for fire fighting purposes to all floors in buildings over 18 metreshigh. It consists of a vertical pipe with landing valves fitted in cabinets oneach floor that act as outlets, enabling the fire service to connect into thewater supply.Rising mainsA dry riser system can be charged with water by pumping from a fireservice appliance via an inlet breeching fitted in a cabinet on theoutside of the building at ground level. An air release valve is fitted atthe highest point to enable the riser to be fully charged.A wet riser system is a pipe kept permanently charged with water thatis immediately available for use on any floor on which a landing valveis provided. Wet risers are necessary for buildings over 60 metres highwhere fire service pumps cannot supply the necessary water pressurevia a dry riser. When pumps and tanks are installed to providesufficient water pressures then there may be a requirement forpressure regulating valves.Twin inlet breechingKidde inlet breechings are manufactured to BS 5041-3. Inlets 65 mm(2½") male instantaneous to BS 336 with integral non-return valves,25 mm (1") drain valve, and rubber blank caps and chains.Suitable for use with a 100 mm (4") rising mainSG Iron body with Gunmetal fittingsFlanged outlets either 100 mm BS 4504 NP 16 or 4" BS 10Table DVertical or horizontal mountingTwin inlet cabinetsRecessed into the external wall of the buildingHigh quality steel for strength and durabilityWired glass door panel and cylinder lockAttractive red polyester coated finishCabinets for single inlet breechings and foam inlets available onrequestDry rising mainsQuadruple inlet breechingSuitable for use with a 150 mm (6") rising mainSpheroidal graphite bodyFlanged outlets either 150 mm BS 4504 NP 16 or 6" BS 10Table DQuadruple inlet cabinetRecessed into the external wall of the buildingHigh quality steel for strength and durabilityWired glass door panel and cylinder lockAttractive red polyester coated finishLanding valveGate pattern outlet valve manufactured to BS 5041-2 in Gunmetal Body and internals designed for low working pressureCompact with excellent flow characteristicsFlanged inlets either 65 mm BS 4504 NP 16 or 2½" BS10 Table DOutlet 2½" female instantaneous to BS 336Straps and padlocks, blank plugs and chains are provided Dry rising mainsOutlet cabinetHigh quality steel for strength and durabilityPainted steel box with a door with a breakable wired glasspanel and cylinder lockAir release valveProvides automatic release of air from a dry riser when it isbeing charged with water, and admission of air when it is beingdrainedInlet connection 1" male BSP to BS 2779Drain valveFitted at the lowest point of a dry riser in cases where parts ofthe system are installed below the inlet breeching25 mm (1") drain valve to BS 5154Landings valvesGlobe pattern valves available in horizontal, oblique, bib-nose orright-angle configurationsManufactured to BS 5041-1 and BS 5154 with Gunmetal bodiesand major working parts in manganese bronzeBody and internals designed for low working pressureCompact with excellent flow characteristicsFlanged inlets either 65 mm BS 4504 NP 16 or 2½" BS10 Table DOutlets 2½" female instantaneous to BS 336 1 Horizontal valve2 Oblique valve3 Bib-nosed valve4 Right-angle valve1 2 3 4Wet rising mainsPressure regulating valvesEnsure uniform downstream pressure regardless of fluctuation insupply pressureRapid response to varying downstream conditionsManufactured to BS 5041-1 in GunmetalHorizontal, oblique, bib-nose or right-angle configurationsavailableInlet pressure up to 20 bar5 6 7 85 Horizontal PRV6 Oblique PRV7 Bib-nosed PRV8 Right-angle PRVTwin inlet breeching Quadruple inlet breechingHorizontal twin inlet cabinetVertical twin inlet cabinetOutlet cabinet Landing valveQuadruple inlet cabinetAir release valveTechnical dataLanding valvesPressure release valves1 Horizontal valve2 Oblique valve3 Bib-nosed valve4 Right-angle valve5 Horizontal PRV6 Oblique PRV7 Bib-nosed PRV8 Right-angle PRV1 23 45 67 8Kidde Products - Building Protection Division, Station Road, High Bentham, Lancaster LA2 7NA UKTel: +44 (0)1524 264000 Fax: +44 (0)1524 265180 general.enquiries@kiddeuk.co.uk www.kiddeproducts.comKidde operates a continuous programme of product development. The right is thereforereserved to modify any specifications without prior notice and Kidde should be contacted toensure that the current issue of all technical data sheets are used. 6316-2/09.07