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A. AE3 & AB3 Series valves should be pressurized “IN” through the center port and flow “OUT” the side ports. AE3 & AB3 Series should never be pressurized “IN” the side ports or be exposed to backpressure greater than the inlet center port, as this will cause internal leakage through the valve. AE3K Series valves may be pressurized through any of the 3 ports.
