TriWay wheel-safe gully grates

TriWay Wheelsafe

Ductile iron hinged double triangular gully grates

A revolutionary design by Wrekin gives the best solution for grate security and high safety for narrow wheel users.

This grate has the unique Wrekin Tri-Way system of captive hinges that combine with a double triangular seating to allow single unit opening with an anti-theft feature. The Wheel-Safe grate design prevents trapping of small narrow wheels in any direction. This gully grate gives safe passage for wheelchair and pushchair users when moving off a pavement and for cyclists on the road the grate prevents wheel trapping and wheel deflection.
Note that for Group 4 compliance grates must have four flanges, whereas Group 3 may have three. TriWay Wheel-Safe offers both Group 3 and Group 4 compliant grate versions.

Key features

D400 symbol For use in a D400 carriageway environment, Group 3 and 4 types available TriWay Wheelsafe gully grate
wheel-safe symbol Greatly reduces the risk of buckling, deflection and trapping narrow wheels
kitemark symbol All fully comply with BS EN 124:2015 and are Kitemarked by BSI
HA104-09 Complies fully with UK Highways Authority specification HA 104/09
gully grate linkage A unique and patented articulated coupling links two double triangular units allowing the benefits of three point suspension together with the advantages of single unit opening.
Anti-theft captive hinge Captive hinges reduce theft risk whilst allowing easy lifting for gully cleaning TriWay Wheelsafe gully grate
reversible hinge symbol Due to the unique design, hinging is reversible allowing the grating to hinge correctly for the traffic flow direction
waterway symbol Up to 900cm² waterway area
non-rock symbol Three point suspension on covers for non-rock stability
ductile iron symbol Manufactured from strong and highly durable ductile iron

Sizes and availability

Wrekin product code Group Clear opening size (mm) Frame depth (mm) Over frame size (mm) Waterway area (cm²)
DGHT0D4/4337/KP 3 430 x 370 100 520 x 520 900
DGHT0D4/4337/KP4F* 4 430 x 370 100 520 x 570 900

*Tapers at base to 450×390 clear opening
Available options:
Screw-locking to deter unauthorised access to the gully chamber (will require standard extended-shank socket set tooling to engage/disengage locking screw.
60+ PSRV anti-slip coating to top surface.

  • Download PDF data sheet

    Tri-Way wheel-safe gully grates

    1.68 MB | Version 108-1411C | PDF format

    Tri-Way wheel-safe gully grates
  • Installation guidance

    New build installation of highway ironwork

    430.10 KB | Version | PDF format

    New build installation of highway ironwork

    Installation of replacement highway ironwork

    561.27 KB | Version | PDF format

    Installation of replacement highway ironwork