Media Water
Valve type Flap valves
Construction Stainless steel
Thermoplastics
 
 
 

Althon designs and manufactures high-quality HDPE fish- and eel-friendly flap valves and fish-friendly flap gates.

Fish-friendly flap valves are designed to prevent harm to fish as they migrate through flood and flow control equipment.

  • Manufactured in HDPE and 316L stainless steel.
  • 50-year design life.
  • Typically designed to max 5Mwc (72hrs) and 1Mwc (50 years); can be tailored to suit specific requirements.
  • Can be factory-fitted to Althon's precast concrete headwalls and chambers.
  • Supplied with an EPDM seal, stainless steel fixings and chemical anchors for installation on site.


Althon designs and manufactures high-quality HDPE fish- and eel-friendly flap valves and fish-friendly flap gates.

Fish-friendly flap valves are designed to prevent harm to fish as they migrate through flood and flow control equipment.

  • Manufactured in HDPE and 316L stainless steel.
  • 50-year design life.
  • Typically designed to max 5Mwc (72hrs) and 1Mwc (50 years); can be tailored to suit specific requirements.
  • Can be factory-fitted to Althon's precast concrete headwalls and chambers.
  • Supplied with an EPDM seal, stainless steel fixings and chemical anchors for installation on site.


Interested in this product?
Call 01603 488700
OR
 
 
 
Enquire
 


Related entries

  • Althon: Angled precast concrete headwalls
    Angled precast concrete headwalls
    Althon
    Althon's concrete angled headwalls are often specified where the outfall is on a bend and the water needs to flow from the headwall at an appropriate angle to the watercourse
  • Althon: Bespoke precast concrete headwalls
    Bespoke precast concrete headwalls
    Althon
    Althon offers a full design and build service for bespoke headwall requirements, resulting in the manufacture and supply of a precast bespoke headwall that is uniquely tailored to a specific set of criteria.
  • Althon: CSP box culvert headwalls
    CSP box culvert headwalls
    Althon
    The CSP range of precast concrete box culvert headwalls from Althon is designed to offer a cost-effective alternative to in-situ structures for connecting pipework discharging into open watercourses. Suitable applications...
  • Althon: H3C headwall, backwall height 800
    H3C headwall, backwall height 800
    Althon
    A one-piece reinforced concrete headwall to suit plastic or clayware pipes up to 300mm or PCC pipes up to 225mm. Stainless steel sockets are provided for the attachment of gratings; lifting points are cast in to each...
  • Althon: H6C headwall range, 1100-2050mm backwall height
    H6C headwall range, 1100-2050mm backwall height
    Althon
    A one-piece reinforced concrete headwall to suit plastic or clayware pipes up to 500mm or PCC pipes up to 450mm. Available with three standard backwall heights, 1.1m, 1.5m and 2m; lifting points cast in to each wingwall for...
  • Althon: H7C headwall range, 1100mm, 1550mm, 2050mm backwall
    H7C headwall range, 1100mm, 1550mm, 2050mm backwall
    Althon
    A one-piece reinforced concrete headwall to suit plastic or clayware pipes up to 525mm or PCC pipes up to 450mm. Available with three standard backwall heights, 1.1m, 1.5m and 2m; lifting points cast in to each wingwall for...
  • Althon: H8C headwall range,  1100 / 1500 / 2100 backwall height
    H8C headwall range, 1100 / 1500 / 2100 backwall height
    Althon
    A one-piece reinforced concrete headwall to suit plastic or clayware pipes up to 525mm or PCC pipes up to 450mm. Available with three standard backwall heights, 1.1m, 1.5m and 2.1m; lfting points cast in to each wingwall for...
  • Althon: H10C headwall range, 1250/1650/2130 backwall height
    H10C headwall range, 1250/1650/2130 backwall height
    Althon
    The H10C headwall is a one-piece structure for plastic, clayware or PCC pipes up to 900mm: available with 3 standard backwall heights; lifting points for safe handling; stainless steel sockets for attaching gratings;...
  • Althon: H20C headwall range, backwall heights 1.25/1.65/2.13m
    H20C headwall range, backwall heights 1.25/1.65/2.13m
    Althon
    The H20C culvert headwall is a sectional structure with rebated joint that is assembled on site around the drainage pipe. It is suitable for plastic or clayware pipes up to 1650mm or PCC pipes up to 1500mm. Available with...
  • Althon: H28C headwall range, backwall heights 1250, 1650, 2130mm
    H28C headwall range, backwall heights 1250, 1650, 2130mm
    Althon
    The H28C headwall is a sectional structure with rebated joint, assembled on site around the drainage pipe. It is suitable for plastic pipes up to and including 1650mm or PCC pipes up to and including 1500mm. It will also...
  • Althon: H40C headwall, backwall heights 1120 - 2340
    H40C headwall, backwall heights 1120 - 2340
    Althon
    A one-piece reinforced concrete headwall available in three widths and five standard heights. Particularly suitable for steep embankments. Due to the relatively narrow footprint of the unit (back to front) it is advisable to...
  • Althon: H42C headwall range, 1120 - 2340 backheight range
    H42C headwall range, 1120 - 2340 backheight range
    Althon
    The H42C is a one-piece reinforced concrete headwall available in three widths and five standard heights. Particularly suitable for steep embankments. Due to the relatively narrow footprint of the unit (back to front) it is...
  • Althon: H44C headwall range, backheight 1120mm - 2340mm
    H44C headwall range, backheight 1120mm - 2340mm
    Althon
    H44C is a one-piece reinforced concrete headwall range particularly suitable for steep embankments. The units are available in three widths and five standard heights. Due to the relatively narrow footprint of the unit (back...
  • Althon: H50C headwall, backwall height 815
    H50C headwall, backwall height 815
    Althon
    A one piece concrete headwall to suit pipes up to 600mm internal diameter. These headwalls can be used when the ditch bank is very shallow approx 1:3.3 They can be provided with fixings for grating, flap valves or with a...
  • Althon: H3G GRC headwall
    H3G GRC headwall
    Althon
    The H3G GRC headwall is a precast glass-reinforced cement headwall with an opening to suit 150mm diameter pipes and knockout webs to enlarge to 225mm and 300mm diameter pipes. Cost-effective alternative to in-situ structures...
  • Althon: Althon GRC small headwall
    Althon GRC small headwall
    Althon
    The Althon GRC small headwall is a lightweight, one-piece, recessed unit that is supplied with a unique anchorage system. For most situations where batter angle is not less than 45 degrees, and for use in minor water courses...
  • Althon: Althon GRC large headwall
    Althon GRC large headwall
    Althon
    The Althon GRC large headwall is a lightweight, one-piece, recessed unit that is supplied with a unique anchorage system. For most situations where batter angle is not less than 45 degrees, and for use in minor water courses...
  • Althon: AH10 left hand angled headwall
    AH10 left hand angled headwall
    Althon
    AH10 left-hand angled headwall is a precast reinforced concrete headwall for pipes with ID up to 900mm. They allow pipework entering a watercourse at an angle, or for an outfall to be sited on a river bend. Pipes can be...
  • Althon: AH10 C angled headwall range, backwall height 1250-2130
    AH10 C angled headwall range, backwall height 1250-2130
    Althon
    The AH10 C angled headwall is a standard one-piece precast reinforced concrete headwall for pipes with internal diameters up to 900mm. They allow pipework entering a watercourse at an angle, or for an outfall to be sited on...
  • Althon: CH20C culvert headwall range, backwall height 1250-2130
    CH20C culvert headwall range, backwall height 1250-2130
    Althon
    The CH20C culvert headwall is a sectional structure that is assembled on site around the box culvert. It is suitable for culvert openings up to 1500 x 1500mm. Available with 1.25, 1.65 or 2.1m high backwall. Standard,...
  • Althon: CH28C culvert headwall, backwall height 1.25 - 2.1m
    CH28C culvert headwall, backwall height 1.25 - 2.1m
    Althon
    The CH28C culvert headwall is a sectional structure with rebated joint that is assembled on site around the box culvert. It is suitable for culvert openings up to 2400 x 1500mm: up to 2400 x 1500mm culvert openings;...

Also by Althon

Althon address and contact details

Althon Ltd
Vulcan Road South
Norwich
NR6 6AF
Tel: 01603 488700
Fax: 01603 488598
View on map
 
Follow Althon
 
Not found what you're looking for? View other options

Ask Althon about

Fish- and eel-friendly flap valves