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Flow control
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Flow control for stormwater, wastewater and process water infrastructure. Valves, penstocks, sluice and slide gates, flap and non-return valves. Tilting weirs, stoplogs, orifice plates, vortex regulators and flow control chambers. Regulate discharge, isolate flows, prevent backflow and mitigate floods in drainage networks, treatment plants and industrial facilities.
Flow control - helping you find the best solution for your project.

Inline 400mm penstock
Althon Inline Penstocks can be used in Surface, Sewer and Process Water applications. They are a Simple and Highly Effective way to Prevent Water Backflow into a system. The Alton Inline Penstock is for Isolation Inline with a Pipe system. The Althon Inline Penstock is guaranteed to a Maximum Pressure of 10MwC as the Penstock has been tested up to
Medium duty 900mm penstock
Althon medium duty penstocks can be used in surface, sewer and process water applications. They are a simple and highly effective way to prevent water backflow into a system. Althon medium duty penstocks have been developed for the majority of situations where a penstock is required. Medium duty penstocks are suitable for sealing pressures of 5MwC
1200mm penstock, HDPE and stainless steel
The Althon 1200mm HDPE Penstock, designed for use with 1200mm pipework, is suitable for surface, sewer, and water process applications. Made from HDPE and grade 316L stainless steel, it has a 50-year design life and is built to handle sealing pressures of 5MwC. The penstock requires minimal maintenance and is easy to install. Typically available
ASA manhole and hydrobrake penstock - 250mm
Designed for pipework up to 250mmm, the ASA Manhole & Flow Control Penstock is suitable for installation in manhole and flow control chambers: size: 250mm; fixing type: wall-mounted; materials: HDPE, stainless steel 316, EPDM, POM; working pressure: 5.0MwC on/off. Althon flow control penstocks are T-key operated with a non-rising spindle. Spindle
600mm penstock, HDPE and stainless steel
The Althon 600mm HDPE Penstock, designed for use with 600mm pipework, is suitable for surface, sewer, and water process applications. Made from HDPE and grade 316L stainless steel, it has a 50-year design life and is built to handle sealing pressures of 5MwC. The penstock requires minimal maintenance and is easy to install. Typically available
Medium duty 100mm penstock
Althon medium duty penstocks can be used in surface, sewer and process water applications. They are a simple and highly effective way to prevent water backflow into a system. Medium duty penstocks have been developed for the majority of situations where a penstock is required and are suitable for sealing pressures of 5MwC as standard: virtually no
StormBrake™ - vortex flow control system
StormBrake™ is a vortex flow control system developed by FP McCann for stormwater drainage applications. Designed to manage surface water run-off in urban environments, the unit uses vortex hydrodynamics to control flow rates without moving parts. It limits discharge rates by creating a vortex that reduces flow energy, helping to manage peak
1300mm penstock, HDPE and stainless steel
The Althon 1300mm HDPE Penstock, designed for use with 1300mm pipework, is suitable for surface, sewer, and water process applications. Made from HDPE and grade 316L stainless steel, it has a 50-year design life and is built to handle sealing pressures of 5MwC. The penstock requires minimal maintenance and is easy to install. Typically available
800mm penstock, HDPE and stainless steel
The Althon 800mm HDPE Penstock, designed for use with 800mm pipework, is suitable for surface, sewer, and water process applications. Made from HDPE and grade 316L stainless steel, it has a 50-year design life and is built to handle sealing pressures of 5MwC. The penstock requires minimal maintenance and is easy to install. Typically available
Medium duty 500mm penstock
Althon Medium Duty Penstocks can be used in Surface, Sewer and Process Water applications. They are a Simple and Highly Effective way to Prevent Water Backflow into a system. Althon Medium Duty Penstocks have been developed for the majority of situations where a Penstock is required. Medium Duty Penstocks are suitable for sealing pressures of 5MwC
Medium duty 600mm penstock
Althon Medium Duty Penstocks can be used in Surface, Sewer and Process Water applications. They are a Simple and Highly Effective way to Prevent Water Backflow into a system. Althon Medium Duty Penstocks have been developed for the majority of situations where a Penstock is required. Medium Duty Penstocks are suitable for sealing pressures of 5MwC
PHA-G hand stop gates
Althon PHA-G HDPE hand stop gates are a simple manually-operated valve for small dimension openings and low pressures: manufactured in HDPE with an EPDM seal; available to suit 150, 200, 250, 300, 400 and 500mm diameter openings. Above this size Penstocks are a better option because of the weight; maximum on and off seating pressure is equal to
Medium duty 700mm penstock
Althon Medium Duty Penstocks can be used in Surface, Sewer and Process Water applications. They are a Simple and Highly Effective way to Prevent Water Backflow into a system. Althon Medium Duty Penstocks have been developed for the majority of situations where a Penstock is required. Medium Duty Penstocks are suitable for sealing pressures of 5MwC
Storm King® advanced hydrodynamic vortex separator
Storm King® is an advanced hydrodynamic vortex separator and floatables control device that delivers exceptional removal of TSS, BOD and other materials at Combined Sewer Overflow (CSO) sites, preventing damaging pollutants from reaching the environment during heavy rainfall and surge events: floatables, gross solids, neutrally buoyant material
Medium duty 150mm penstock
Althon Medium Duty Penstocks can be used in Surface, Sewer and Process Water applications. They are a Simple and Highly Effective way to Prevent Water Backflow into a system. Althon Medium Duty Penstocks have been developed for the majority of situations where a Penstock is required. Medium Duty Penstocks are suitable for sealing pressures of 5MwC
Medium duty 1250mm penstock
Althon Medium Duty Penstocks can be used in Surface, Sewer and Process Water applications. They are a Simple and Highly Effective way to Prevent Water Backflow into a system. Althon Medium Duty Penstocks have been developed for the majority of situations where a Penstock is required. Medium Duty Penstocks are suitable for sealing pressures of 5MwC
ASA manhole and hydrobrake penstock - 150mm
Designed for pipework up to 150mm, the ASA Manhole & Flow Control Penstock is suitable for installation in manhole and flow control chambers: size: 150mm; fixing type: wall-mounted; materials: HDPE, stainless steel 316, EPDM, POM; working pressure: 5.0MwC on/off. Althon flow control penstocks are T-key operated with a non-rising spindle. Spindle
Penstock valves - HDPE and stainless steel water flow control gates
Althon penstock valves are made from HDPE and stainless steel 316L and are used for controlling and isolating water flow in drainage and flood prevention systems. Designed for wall mounting, inline installation, or use in manhole chambers, these valves suit a range of pipe and chamber sizes and square or non-standard openings
1000mm penstock, HDPE and stainless steel
Althon heavy-duty penstocks with 1000mm opening are used in surface, sewer and process water applications, and are suitable for on/off-seating pressures of 10MwC. Manual or actuated operation. Stainless steel construction. W1300mm x D379mm x H1265mm
Inline 150mm penstock
Althon Inline Penstocks can be used in Surface, Sewer and Process Water applications. They are a Simple and Highly Effective way to Prevent Water Backflow into a system. The Alton Inline Penstock is for Isolation Inline with a Pipe system. The Althon Inline Penstock is guaranteed to a Maximum Pressure of 10MwC as the Penstock has been tested up to
Hydro-Brake® Drop - self-activating conveyance and flow control
Hydro-Brake® Drop is a compact, self-activating conveyance and flow control system that dissipates the energy of dropping water, enabling customers to convey water from great heights whilst preventing the damage and nuisance effects associated with falling water. Using vortex technology to minimise erosion, corrosion, noise and odour, Hydro-Brake
1100mm penstock, HDPE and stainless steel
The Althon 1100mm HDPE Penstock, designed for use with 1100mm pipework, is suitable for surface, sewer, and water process applications. Made from HDPE and grade 316L stainless steel, it has a 50-year design life and is built to handle sealing pressures of 5MwC. The penstock requires minimal maintenance and is easy to install. Typically available
Hydro-Brake® Orifice - flow control for site discharge
The Hydro-Brake® Orifice flow control provides water quantity management for surface, foul or combined water. It is ideally suited to sites where there are minimal on-site storage/attenuation constraints, generous discharge consents or the need for a low-cost, low-complexity flow control solution. Hydro-Brake® Orifice features precision cut
Medium duty 400mm penstock
Althon Medium Duty Penstocks can be used in Surface, Sewer and Process Water applications. They are a Simple and Highly Effective way to Prevent Water Backflow into a system. Althon Medium Duty Penstocks have been developed for the majority of situations where a Penstock is required. Medium Duty Penstocks are suitable for sealing pressures of 5MwC

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