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Division 4.2.2.2.6 Pressure Relief Valves

Original text. Later amendments are not shown.

Pressurise the pressure relief valve for 25 cycles. A test cycle consists of pressurising the pressure relief valve to the activation pressure causing the pressure relief valve to open and vent. Once the pressure relief valve is venting the inlet pressure shall be reduced causing the pressure relief valve to re-seat. The cycle time shall be a period of 10 ± 2 s. For the final cycle the activation pressure shall be reported and shall correspond to the activation pressure specified by the manufacturer within a range of ± 10 per cent.