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Priority Demand Valves
WRAS-approved priority demand valves to BS 9251:2021 — isolating the cold water supply to divert all available water to the sprinkler system.
Overview
Built to prioritise the sprinkler system
AquaGuard offer a large range of WRAS-approved priority demand valves compliant with BS 9251:2021, designed to isolate the building’s cold water supply on a signal from the sprinkler flow switch and divert all available water to the sprinkler system. All valves are pre-wired and tested in-house to ensure reliability and ease of installation.
A large choice of valve options and sizes is available — motorised ball valves from 1/2″ to 2″ and motorised butterfly valves from 2″ to 12″, all WRAS approved and failsafe closed.
Features
Why specify an AquaGuard PDV
WRAS approved
All valves are WRAS approved and failsafe closed as per BS 9251:2021.
Pre-wired & tested
Pre-wired for fast, easy installation and tested in-house for peace of mind.
Low voltage & IP rated
12V / 24V valve voltage for safety, with IP-rated components throughout.
Monitored & alarmed
Volt-free alarm output contacts, flow switch input and optional tank level switch input.
Technical information
Valve options & sizes
| Installation type | Valve type | Valve size range | Supply / valve voltage | PDV control box size |
|---|---|---|---|---|
| Domestic — Cat 1 | Motorised ball valve, failsafe closed | 1/2″ to 1″ | 230V in / 12V DC | 100 × 100 × 50 mm |
| Residential — Cat 2,3,4 | Motorised ball valve, failsafe closed | 1″ to 2″ | 230V in / 24V DC | 200 × 150 × 80 mm |
| Residential — Cat 2,3,4 | Motorised butterfly valve, failsafe closed | 2″ to 12″ | 230V in / 24V DC | 200 × 150 × 80 mm |
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Talk to the team — pre-built, tested and ready to install.