Priority demand valves for BS 9251 2021
Position indicator
Valve fails safe in power loss/ flow/ low level
LED for power good
LED for flow switch activated
LEDs for valve position
Labelled for fitting/ wiring/ bypass/ testing
Alarm contact
BS 9251 2021 Priority demand valve 2.5" to 5"
priority demand valve Failsafe Butterfly[...]
Adobe Acrobat document [830.3 KB]
priority demand valve Failsafe Butterfly[...]
Adobe Acrobat document [830.3 KB]
BS 9251 2021 PDV 3/4" to 2" with WRAS approved valve and controller
BS 9251 2021 compliant priority demand valves, WRAS approved valve with controller for mains or tank fed systems
Priority demand valve data sheet BS 9251[...]
Adobe Acrobat document [902.6 KB]
BS 9251 2021 compliant priority demand valves, WRAS approved valve with controller for mains or tank fed systems
Priority demand valve data sheet BS 9251[...]
Adobe Acrobat document [902.6 KB]
3D modelled videos of residential towers with sprinklers
Double click the two images below
They will open in linkedin, but you don't have to log in.
The 2 videos explain the BS9251 rules and how to fit the product, bridging the gap between the various trades involved.
The valve is compliant with BS 9251 2021.
It is your decision if you think booster sets comply with BS 9251 2021