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Product Overview

D220W: 1/2" to 2"
D220CW: 15mm to 28mm
Compression to BS EN 1252-2 and taper female threaded to BS EN 10226-2
DZR Brass

*Please refer to Datasheet for full technical information

  • WRAS Approved Product
  • KIWA
  • BIM File Available

D220W: 1/2" to 2"
D220CW: 15mm to 28mm

Double Check Valve – DZR Brass

  • Double check valves are used to prevent the risk of backflow and back siphonage contamination in domestic dwellings, public and commercial buildings
  • WRAS Approved for use with wholesome (potable) water to 85°C (85°C for threaded and 60°C for Compression)
  • Compression version supplied with ends complying with BS EN 1254-2 for use with BS EN 1057 R250 (half hard) copper tube or female taper threads complying with BS EN 10226-2
  • Shell pressure rating for D220W and D220CW is PN16 with a maximum inlet/working pressure of 16 bar
  • Compliant with BS EN 13959 ‘Anti- pollution check valves’ family E type D