This is a compact unit that delivers a fixed amount of treated water from the Johkasou tank to the next chamber.Adjust the flow with partitions and weirs to alleviate sudden inflows. It suppresses load fluctuations in downstream aeration, sedimentation, and disinfection, contributing to stable operation.

The main body and gate plate are made of PVC, which has excellent corrosion and chemical resistance, and is rigid enough to resist deformation even in a tank interior. It is a material that has high processability such as cutting and bonding, and is easy to handle for maintenance and repair.

The return port and transfer port are connected to the VP piping with adhesive using DV-S socket connection. The inlet is TS-L connection, which uses a TS elbow to match the pressure piping.