Learn about our Jet Flow Gates

Jet Flow Gates are used as regulating gates to provide controlled discharge on outlet and bypass structures. They are most commonly installed for free discharge in the horizontal direction, but some are set at a downward angle or below tailwater for submerged discharge. The Jet Flow Gate is like a bonneted slide gate in appearance but includes a circular floating seat ring. The seat ring, or seal ring, is a tapered orifice and the primary design feature that contracts flow through the gate body and jet flow gate valve to safely discharge downstream. The contracting flow allows air to be introduced without cavitation or vibration.

A sliding gate leaf controls the opening and flow rate. The Jet Flow Gate can be throttled at any position including small openings under high head pressure. The ability to safely regulate flow and trouble-free performance records make the Jet Flow Gate an excellent choice for outlet works.

Steel-Fab has developed the capability to install a Jet Flow Gate within a larger Roller Gate. This arrangement allows controlled minimum flow to be provided without constructing a separate bypass structure.