Zone Assembly

Zone Assembly

Size 50mm (2"), 65mm (2½”), 80mm (3") 100mm (4"), 150mm (6") 200mm (8")
Maximum Working Pressure 12 Bar (175 psi)
Standards BS5306 (Part 2) and BS EN 12845.
Connections Groove to ISO6182 / AWWA C606
Test & Drain Valve: Rp 1-1/4 (1-1/4” BSPP) for DN50, Rp 2 (2” BSPP) for DN65 - DN200

The Rapidrop zone assembly is a compact unit that fulfils the requirements of BS5306 (Part 2) and BS EN 12845. It is used where sprinkler systems are divided into zones, typical applications include shop units and high rise buildings. The flow switch will detect water flow as a result of a sprinkler head or test valve activation. This signal indicates in which zone the activation has taken place. A signal is also received from the isolation valve when it is fully open and when it starts to close. When required the isolation valve can be closed to isolate the system downstream of the valve.

Optional test and drain valve can be fitted or supplied with the zone assembly, bespoke solutions available on request.


  • Butterfly Isolation Valve Model 216 - FM Approval, UL Listed, VdS
    and CE Certificates
  • Water Flow Detector Model WFDEN - FM Approval, LPCB, Vds
    and CE Certificates
  • Easy to install, complete assembled fabricated unit
  • Fixed IP67 metal RAL3002, double outlet junction box. Installed on the isolation valve for easy end of line resistor installation
  • Pre-wired junction box with terminals connecting to the isolation valve and flow switch (SPDT contacts)
  • LPC FP200 Gold external Fire resistant cable



Size Dimensions (mm)  Weight (KG)
50mm (2") 60.3 981 15
65mm (2.5") 73.0 997 17
65mm (2.5") 76.1 997 17
80mm (3") 88.9 997 19
100mm (4") 114.3 1016 23
150mm (6") 165.1 1048 38
150mm (6") 168.3 1048 38
200mm (8") 219.1 1033 54