PRIORITY DEMAND VALVE FOR BS9251 2014

BS9251 2014 Priority demand valve with failsafe actuator Failsafe WRAS approved butterfly valve for large pipe systems

Failsafe WRAS approved butterfly valve 2.5" upto 6"

Electric actuator with 24VDC flow switch connection

Position indicator

Valve fails safe in power outage and closes  

LED for power good

LED for flow switch activated

Labels for fitting/ wiring/ bypass/ testing etc

A 3D gallery of our new 3D model video with all the sprinkler rules and additional guidance and recomendations- coming soon

Priority demand valve WRAS approved Fire sprinkler priority demand valve
  • Pre-wired 24VDC circuit
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  • Power good led
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  • WRAS approved solenoid valve
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  • Simple installation  mains plug 
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  • WRAS solenoids, 3/4",1", 1.25" 1.5" and 2"

 

 

Priority demand valve data sheet 3/4" to 2" WRAS approved solenoid valve, failsafe
Priority demand valve for compliance with BS9251 2014
priority demand valve data sheet.pdf
Adobe Acrobat document [308.3 KB]
Priority demand valve 2.5" to 4" WRAS approved failsafe actuated butterfly valve
priority demand valve Failsafe Butterfly[...]
Adobe Acrobat document [649.5 KB]

When required this can connect to the pump flow switch/ domestic water supply so that the domestic water supply is shut off in the event of a fire.

Rules description 3.13 "valve for isolating the supply to the domestic supply in the event of sprinkler activation"

 

Normally closed valve, energised open- safe for the sprinklers

 

The valve can be used for; Booster Pump Isolation, Town main household supply shut off, priority for mains boosted sprinkler pump, pririty for sprinkler tank infill

TANK LOW LEVEL MONITORING

When installing a domestic / residential sprinkler system system tank it is a requirement of BS9251 to have float switch monitoring the water level

WRAS approved for booster sets or dedicated tanks

 

 

Rule 5.2.7 Where the cistern provides a totally dedicated water supply for sprinklers, a low level alarm should be provided

 

This can easily integrate into all our pumped systems, making alarm connections simple

 

Grifen now supply a float, including;

5m connection cable

1" or 1/2" (same device) BSP tank adaptor

Monitors normally open or normally  closed

FLOWST8n and DUPLIC8 have a 24vdc low level monitoring circuit as standard. The float switch can be monitored by the main control panel and alarmed on the general fault