Flush bottom penstock design is used whenever a continuous smooth opening is desirable. Typical installations include waste water setting tanks, aeration tanks, sedimentation and flocculation basins.
The advantage of this penstock is to prevent the rubbish stay or block at the slot between the bottom of the penstock and the mounted wall. This is used for preventing the gate operation stuck and water leakage cause by the stuck at the bottom gapping.
This penstock is providing a flat plane across the bottom of frame while the gate is open by using EPDM seal. The seal is mounted to the frame with stronger support by corrosion resistant fasteners. The EPDM seal is design for easy replaceable without dismantle the frame. Bottom wedges will not used on the flush bottom closure.