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DGHT0D4/6045/KH4F

Highway D400 4 flange gully grate 425mm x 425mm clear opening with 100mm frame depth (made to order)

Specification Knowledge base

Stock code Range Clear opening
(mm)		 Base opening
(mm)		 Overall frame
(mm)		 Frame depth
(mm)		 Waterway area
(cm²)		 Options My Wrekin
DGHT0D4/6045/KH4F Highway 425 x 425 600 x 450 775 x 625 100 1,750

Features

  • Non rocking 3-point suspension design, for silent operation.

    3 point suspension

  • Meets the requirements of CD 534 v0.1.0 (formerly HA 104/09).

    CD534 v0.1.0

  • Captive hinges reduce theft risk whilst allowing easy lifting.

    Captive hinges

  • The enlarged frame corners help to dissipate loads onto the foundation, providing a longer service life and increased reliability.

    Enlarged frame corners

  • Frame gussets are supports which reinforce the corners where the frame sections meet, distributing stress evenly, preventing damage to the frame or the access cover.

    Gussets icon

  • Keyway lifting points are provided on the frame for safe handling.

    Keyway lifting point in the frame

  • Holes in the frame flange where mortar can pass between the underside and top side, creating an interlock, providing greater strength.

    Mortar Apertures icon

  • Surface texturing above and below the flange enables better mortar engagement, reducing any lateral movement which could result in cracking.

    Textured mortar engagement flange surface

Images

Specification

General information

Stock code
DGHT0D4/6045/KH4F
Primary material
Ductile iron
Range
Highway
Category
Gully grate
Flanges
4

Standards, classes and groupings

Standards
BS EN 124-2
DMRB
MCHW
CD 534 v0.1.0
BS EN 124 Class
D400
BS EN 124 Group
3
4
Third party certified
Kitemark
CD 526 hydraulic capacity
Q

Dimensions

Frame shape
Rectangular
Manhole shape
Rectangular
Overall frame (A x B)

775 mm x 625 mm
Clear opening (C x D)

425 mm x 425 mm
Frame depth (E)
100mm
Base opening (F x G)

600 mm x 450 mm
Waterway area
1,750cm²

Available options

Accessories

Stock code Description My Wrekin
PC/UNIFORM/151076 Uniform chamber adjustment unit 760mm x 100mm x 15mm
PC/UNIFORM/251076 Uniform chamber adjustment unit 760mm x 100mm x 25mm
PC/UNIWEDGE/755012 Uniform support wedge 120mm x 50mm x 75mm
YPCR/U12.5 12.5Kg Unipak® rapid curing polyester resin mortar
YPCR/U25 25Kg Unipak® rapid curing polyester resin mortar
SCREWLIFT Simple and rapid manhole frame levelling system. Simply push the bushes into the holes in the flange and adjust the levelling screws to the required height.

Downloads

BIM model - DGHT0D4-6045-KH4F - 302.ifc
BIM File-Login required
Kitemark Certificate.pdf
Certificate-pdf
Highway range specification clauses.pdf
Specification clause-Login required

Notes

  • Can be manufactured on request, please contact the sales team for more information.
  • The D400 load capability of these Group 3 products also offers the benefit of making them suitable for exposure to Group 4 traffic types. Where 3-flange D400 Gully Grate assemblies are employed, we recommend that they are installed against a kerb, not in an open highway location. All values stated are nominal within 2.5% tolerance.

Knowledge base

Access cover being installed

Knowledge Base / Frequently Asked Questions

Ductile iron access cover FAQs

Frequently asked question questions about our ductile iron access cover range of products.
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Manhole cover range comparison chart

A comprehensive feature comparison of our market leading Tristar, Highway and Unite ranges of access cover.
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Knowledge Base / Product and specification guidance

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Guidance on surface oxidation on iron castings, including what our covers are coated with and why we do this.
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Knowledge Base / Standards and conformity

Operation and maintenance of BS EN 124 ironwork

The complete operation and maintenance (O&M) manual for all Wrekin BS EN 124 ironwork.
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Knowledge Base / Standards and conformity

CD 526 hydraulic capacity classifications

A guide to the ‘P, Q, R, S & T,’ ratings are classifications listed in Highways England DMRB document CD 526 and how they are calculated to indicate a gully grating’s hydraulic capacity (or effectiveness at evacuating water from a hard standing area. e.g. carriageway).
Access cover being installed

Knowledge Base / Standards and conformity

Understanding BS EN 124 groups and classes

BS EN 124:2015 divides access covers and gully grates into classes by static test load. It also categorises the various places where they may be installed from Group 1 to Group 6. This article will guide you through the groups and classes.
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Sewers for Adoption (7th edition) contains guidance for the design and construction of sewers that will be adopted by Sewerage Undertakers in England and Wales in accordance with Section 104 of the Water Industry Act 1991. This helpful guide will take you through what you need to know.
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    Learn how to accurately measure manhole covers and gully grates with our helpful guide.
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    What information is on product labels?

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    A large number of our Unite and Highway covers provide the facility for a retrofittable badge to be installed in the cover, without the need for welding. In addition, this location can also be used to install communications antennas within the cover, removing the need to adjust the surrounding road surface.

    This article discusses the potential applications of this technology.
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    Knowledge Base / Product and specification guidance

    On-site coating of ductile cast iron parts

    Where the loss of barrier coatings has occurred, usually through trafficking and/or light corrosion, a site-applied paint coating may be successfully brush-applied to refresh the surface finish of ductile iron parts.
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    Knowledge Base / Product and specification guidance

    Ductile iron product symbols

    Guidance on the symbols and iconography displayed on Wrekin ductile ironwork.
    Access cover being installed

    Knowledge Base / Standards and conformity

    A guide to conformity marking and voluntary third-party certification

    Helpful information that guides you through applicable conformity marking and voluntary third-party certification requirements in the UK.

    1. Wrekin Products Ltd is continually seeking to improve our products and therefore reserves the right to alter product specifications without prior notice.
    2. It is the responsibility of all users to satisfy themselves the above data is current.
    3. Installation details are available on request.
    4. All Wrekin products are supplied subject to our Terms and Conditions of Sale

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