A single piece Stop Gate is normally designed for installation at the bottom of the channel with a civil work apron wall extending up from the top of the opening, to deck level. However, the Stop Gate can be supplied in sections with one section arranged to locate above the other so that it extends above the highest water level thereby obviating the necessity for a concrete apron wall.

A preformed neoprene seal is fitted around the periphery of the Stop Gate. This seal arrangement is suitable for sealing in indirection with an on-seating head.

The Stop Gate is fitted with side guidance rollers and to align the seals on the sealing face. A cill sensing device is also incorporated to prevent accidental release of the lifting beam in the event of the Stop Gate jamming in the guides whilst being lowered.

The Stop Gate is designed for installation in still water conditions although alternative designs incorporating heavy duty rollers on the edges of the gates are available for applications where the gate has to be positioned during flow conditions.

Application
Brackett Green Travelling Band, Rotating Cup and Drum Screens for water and sewage applications need only be isolated for routine maintenance.

The provision of Stop Gates allows the channel to be closed whenever required to facilitate routine inspection of the screening equipment or pump intakes. Careful planning of a multi-screen installation can enable a minimum number or Stop Gates to be used. Care should be taken whenever to standardise wherever possible on Stop Gate size to enable a minimum unit number to be utilised at various locations on the installation.