DGH0D4/4337/KTTristar D400 3 flange gully grate 430mm x 370mm clear opening with 100mm frame depth
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The Sea Starts HereWe've taken a notable step in environmental advocacy by updating our most popular Tristar gully gratings to include the phrase "The Sea Starts Here". This initiative aims to highlight the critical issue of water pollution among communities and the wider industry. The message serves as a poignant reminder that our actions on land reverberate through to our oceans, urging us to consider how we dispose of waste and the long-term effects on marine ecosystems. Find out more. Knowledge base
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). 
Knowledge Base / Standards and conformity Sewers for adoption 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. 
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. 
Knowledge Base / Product and specification guidance Understanding The Sea Starts Here It's crucial to note that this addition is purely a message of awareness; the quality and functionality of the Tristar gully gratings remain unaltered. These gratings have been steadfast in performance, offering durability and reliability that clients have come to expect from Wrekin Products. 
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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