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Safety Gates, LLC.
PO Box 154
Adrian, OR 97901

Automatic Trip Gate Details

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The Automatic Trip Gate is simply a dam on a hinge. The thick upstream plate (a) and the lever arm (b) are sized to resist the hydraulic forces present during normal operation when the gate is in standby. There is a trough (c) which partially fills when water begins to flow over the upstream plate. Holes (d) in the trough are provided to avoid filling the trough with rainwater or minor spillover. The hole sizes and spacing can be varied to control the rate at which the trough fills and the gate trips. A grate (e) is provided to prevent debris from falling into the trough. A trim plate (f) can be attached to the top of the upstream plate at small height increments so that the spillover can be made to vary when the multiple units are installed. If this technique is employed the gates will trip sequentially.

The hinge (h) is a stainless steel pin with a molybdenum impregnated bushing. Standard bulb and tail seals (g) are provided to stop leakage around the gates.

A plunge pool (i) to cushion the gate when it trips is formed by constructing a concrete wall (j). A drain equipped with a gate valve (k) is provided so that the pool can be drained. A picking point (I) is provided for raising the gate following tripping. It can be reset while the canal or reservoir is in operation using a small crane or a permanent lifting mechanism. A small heater can be used to keep the pool from freezing.

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The gates are supplied with all steel parts and hinges including end plates to be embedded in the customer's concrete foundations and walls. The gate can be coated during manufacturing or at the site following installation.



Installation

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Operation

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