Many water authorities are demanding water storage tanks that are connected to mains water has the mains protected from contamination, this is achieved  with a Type AB Airgap.

400 * 80mm Screened Spillover weir

Screened with grade 316 stainless steel mesh so that the weir comply's with water regulations.

Suitable to create Cat 5 Backflow Prevention ( Type AB Airgap ), by fitting the weirs into the walls of the tank or fitting a raised ballvalve with the weirs onto the lid of the tank.

Type AB Airgaps

1 No. Weir suitable for inlets upto 1"

2 No Weirs suitable for inlets upto 1.5"

4 No. Weirs Suitable for inlets upto 2"

Larger Weirs can be specially made for larger inlets, please contact our offices for these weirs.