Company details for Althon Ltd

Althon Ltd

  • 0160 (Display number) 01603 488700
Vulcan Road South
Norwich Norfolk NR6 6AF United Kingdom

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Product Information

Hand Stop Gate

Stockcode:

Althon PHA-G HDPE Hand stop gates are a simple manually operated valve for small dimension openings and low pressures. Our handstop gates are design to isolate and control the flow of water discharging from pipes or to manage water levels. Manufactured in HDPE with an EPDM Seal the Hand Stop gate is available to suit 150, 200, 250, 300, 400 & 500mm Dia. openings.  Above this size Penstocks are a better option because of the weight. 

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About us

Established in 1982, Althon Ltd have over 37 years’ experience in the design and manufacture of bespoke drainage and water management products, creating specialist solutions that are supplied throughout the construction industry. 

Based in Norfolk, our company strives to meet the strict guidelines set out by the Sewers for Adoption and Severn Trent, working closely with the construction sector to ensure that all commercial and industrial environments are treated with equal importance.  Our specialist solutions have been highly recommended throughout the UK for many years.

Here at Althon, we pride ourselves on the fact that we have supplied to over 50 countries worldwide, employing over 70 individuals who understand the importance of water management and are fully committed to completing projects as efficiently as possible.  Our reputation has grown rapidly over the years due to our ultimate dedication and desire to succeed within the industry.  Our full range of bespoke precast concrete headwalls have been proven to be a cost-effective alternative to the regular pipework that is used commonly in ponds, rivers, ditches, swales and other tidal areas. 

Athlon Ltd are best known for our good customer service and high-quality solutions that have achieved outstanding results for many years.  Some of these products include;

Precast Concrete Headwalls – Headwall specification tools, sewers for adoption headwalls, rectangular concrete headwalls, precast headwalls for box culverts, splayed wing wall headwalls.

Flow Control & Flood Prevention – Penstocks, hand stop gate, flap valves, orifice plates, Wastop inline non-return valves, safety chains, Tideflex, stoplogs.

Drainage Channel Range – Shallow concrete channels, high capacity channels, heavy duty concrete channels. Steel façade channels, GRP lightweight channels, light/medium duty channels.

Gratings & Penstock Chambers – Outfall safety grilles, penstock manhole chambers, concrete slit traps, inspection chambers, sloped and circular trash screens, penstock endwalls.




 

Articles/Press Releases

  • 12/11/2024 - Flow control on headwalls 🌊
    We manufacture concrete headwalls with precast baffle blocks on the spillway.
  • 10/06/2024 - Circular Pipe Mounted Gratings
    When you don't have a flat surface to fix to we can fabricate a hinged lockable pipe mounted grating.
  • 02/05/2024 - SFA Inlet and Outlet Headwalls
    🖥️ We have just launch a new section to our website for SFA Inlet and Outlet headwalls
  • 09/04/2024 - Eco 1 🍃
    All Althon headwalls are manufactured using a trademarked eco1™ concrete mix design.
  • 09/04/2024 - Great Yarmouth's Herring Bridge Project
    In 2023, Althon supplied a number of precast concrete headwalls, to Great Yarmouth’s Third River Crossing (Herring Bridge).
  • 13/03/2024 - Reducing CO2e in our precast concrete headwalls
    All Althon headwalls are manufactured using a trademarked eco1™ concrete mix design.
  • 05/03/2024 - Bespoke Headwall
    A recently completed bespoke headwall.
  • 23/02/2024 - Large Headwalls
    Some photos taken at the factory to show the progress on our SP27L and SP40L headwalls.
  • 22/02/2024 - CHAS Certificate 2023/2024
    We are delighted to share that Althon has been awarded CHAS accreditation for this coming year, after demonstrating compliance with the CHAS standard in line with the requirement of SSIP Core Criteria and UK H&S Legislation.
  • 12/02/2024 - Local headwalls in Norfolk
    We have recently supplied several headwalls to Great Yarmouth’s third river crossing know as Herring Bridge.
  • 12/02/2024 - Coloured precast concrete headwalls
    Althon are now able to offer coloured headwalls for aesthetically sensitive areas. Our coloured concrete headwalls can help the installation blend into the surrounding landscape.
  • 26/07/2022 - Level Invert on Headwalls
    The photo above is one of our smaller RSFA headwalls (RSFA18B 01 1150) showing a great example of when a customer requires the pipe ID at level invert.
  • 02/11/2021 - Approved Mammal Shelf to be used on HS2
    Althon have recently been approved to supply mammal shelves to the Align/ HS2 project.
  • 13/11/2020 - Althon CPD course now available
    'Specifying the right headwall for your application'
  • 14/10/2020 - Pre-fitted Manhole Chamber Accessories
    Althon are able to pre-fit step irons and penstocks into our precast concrete manhole chambers, this means the concrete does not have to be drilled on site.
  • 08/06/2020 - Mammal Ledges & Shelves
    Althon have just launched a new range of mammal ledges in GRP and mammal shelves in HDPE.
  • 04/06/2020 - Certified CPD Member
    Althon Limited are pleased to announce that they are now a certified CPD Member.
  • 13/05/2020 - Anglian Water Approved Headwalls
    Althon Ltd are pleased to announce that their ‘Sewers for Adoption’ range of Headwalls have been approved for use on projects that are to be adopted under a Section 104 agreement by Anglian Water Services Ltd.
  • 09/03/2020 - Sewers for Adoption - range of Headwalls
    Althon Ltd are pleased to announce that their ‘Sewers for Adoption’ range of Headwalls have been approved for use on projects that are to be adopted under a Section 104 agreement by Anglian Water Services Ltd.
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