The following example analyzes the two relief valve systems, shown below, subject to the simultaneous firing of both valves.
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Process Steam Conditions - 450 psi, @ 650°F
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Relief Valve Orifice - JOHNSON #34A-06 2.141 in. ID.
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Valve Opening Time - 8.0 milliseconds
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Valve Closing Time - 8.0 milliseconds
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Relief Duration - 1.0 second
