Reply To: T&P relief valve discharge line pressures

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#292124
Robert Stephen Morton
Participant

Jerry. Curious non plumber. The pressure at the Inlet of the pressure relief valve is 150PSI not the outlet. Te relief valve opens at 150psi & relieves the pressure. The relief valve drain is to drain undiminished & without any restrictions. If there were any restrictions, then the pressure at the outlet might be 150psi.
Bob

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