• HydroFlap Backwater Gates
HydroFlap Non-Return Flaps

Reliable backwater protection for
canals and constructions

The Function

Steinhardt® HydroFlap Non-Return Flaps allow water to flow in only one direction. They are easy to open and secure when closed due to flexible cover bearings.

  • Fixed by wall flange or DIN flange to Client‘s requirement.
  • Material: stainless steel, bearings brass/zinc alloy, flexible seal.

Suitable for Flood Protection

Steinhardt® HydroFlap Non-Return Flaps protect against discharging into floodwater. Unwanted flooding of the sewer network becomes a thing of the past. 

The HydroFlap Non-Return Flaps are manufactured
from stainless steel and operate reliably even after long periods of inaction. They consist of a frame fixed to a concrete wall, durable bearings and a robust flap (please indicate maximum h/UW). Optional counter-weights can be designed to lessen resistance.

Areas of Application

  • sewer systems
  • tank and stormwater overflows
  • sewer overflows
  • receiving water outlets
  • pump stations
  • flushing sumps
  • ponds

The Advantages of  HydroFlap Non-Return Flaps
DN 200 up to 1200 mm

  • stainless-steel construction
  • material 1.4301 (V2A)
  • 1.4571 (V4A) on request
  • flange with connecting dimensions acc. to DIN 2501
  • flexible cover bearings ensure easy opening and secure closing
  • robust construction
  • easy mounting
  • complete with sealing material and stainless-steel fixings