- Model Type AT - Hydraulic-Mechanical Flow Regulators



For blockage free, continuous flow control of storm water retention system. Limiters have the task of restricting the pass forward flow to a predetermined value independent of the water level, allowing a constant flow. With the ALPHEUS-AT Flow Limiter, you are assured of a constant pass forward flow irrespective of head.

The ALPHEUS AT is the correct solution for controlling the pass forward flow rate where no power is available or desirable. The AT precisely regulates the predetermined flow rate irrespective of head conditions. The unit is factory calibrated by setting the outlet control plate to a predetermined height that will allow the desired pass forward rate to flow unhindered through the unit during normal dry weather flow. During storm conditions the outlet control plate causes the flow to back up within the unit, as it does the float rises. The float is linked to the inlet control plate that closes as the float rises. The inlet control plate controls the flow into the Alpheus unit and maintains the head within the unit at a constant, which in turn limits the flow out of the unit to the desired flow rate. As the incoming flow subsides the float falls and opens the inlet plate to allow greater flows into the unit. In the event of a blockage of the inlet control plate the float falls and the plate opens to punch the blockage through. Should the outlet control plate become blocked the float will rise above its normal pre-set level at which point it raises the outlet control plate to allow the debris to clear. The system is designed to operate frequently at low flow rates.

  • Suitable for semi-dry and dry installations
  • Automatic operation without power supply
  • Automatic de-blocking
  • Vertical flow curve
  • Constant flow, irrespective of upstream water head
  • incremental change of pass forward flow rate
  • Minimal maintenance
  • High-quality robust construction in stainless steel, material AISI 304 or 316TI

The ALPHEUS-flow limiter, type AT could be delivered with the nominal size of DN 100 to DN 500 and with a flow rate from 5 l/s to 438 l/s.

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