ACO Q-Penstock provides safe, dependable control of flows in surface water and flood management systems, helping you manage intense rainfall, protect critical assets and reduce the risk of localised flooding. 

They are also suitable for use in foul and combined sewage systems where reliable isolation and level control are essential. Whether you are creating offline storage, controlling discharge to watercourses or isolating sections for maintenance, ACO Q-Penstock gives you precise and reliable shut off when you need

Manufactured from lightweight HDPE with stainless steel 316L reinforcement, the units are easy to handle on site, simple to install and built to perform in aggressive environments. The robust construction delivers long term durability while helping to reduce whole life costs for asset owners and operators.

A curved, vertically moving door with a high performance EPDM seal provides tight shut off, keeps leakage to a minimum and significantly reduces the risk of blockages. 

ACO Q-Penstock HD

ACO Q-Penstock SD

Technical Info

Wall Mounted - Other options available (see below)

Maximum meter water column: 5Mwc (both sides)

Comply's with BS7775 & DIN-19569-4 class 4

Standard available sizes: DN 100-1500mm

50 Year Design Life

Technical Info

Wall Mounted

Maximum meter water column: 3Mwc (both sides)

Comply's with BS7775

Standard available sizes: DN 100-600mm

50 Year Design Life

Configurations and options

ACO offers alternative penstock configurations outside of the standard range to meet project requrements: 

• Rising spindle situation.
• Several manual and electrical operations
• Heavy duty penstocks with higher pressure on request.
• Square, rectangular or egg-shaped openings.
• Weir penstock with downwards opening
• Spigot mounting or flange mounting.

To enquire about Penstocks outside of the standard range please fill in the contact form below.