2nd ANSI Public Review of B109.5 Standard (New)

2 Section 5.3.2 External Leakage The leakage shall not exceed the requirements set forth below when the regulator is subjected to a back pressure of 5 PSIG or 1.5 times the maximum set point pressure, whichever is greater, through the regulator outlet with the vent and body inlet connection blocked. [...] For set points greater than 10 psig (69 kPa), lock-up pressure shall not be greater than 110% of set point. [...] gauge (3.48 kPa (1.74 – 5.22 kPa (0.49 kPa gauge) gauge) < Set < 1 gauge) psig 1 psig (6.89 kPA 2.0 psig max (13.8 0.1 psig (0.68 kPa gauge) ≤ Set ≤ 2 kPa gauge) gauge) psig (13.8 kPa gauge) 2 psig (13.8 kPa 3.0 psig max 10% of gauge gauge) < Set ≤ 20 (20.68 kPa gauge) setpoint pressure 10 psig (138 69 kPa gauge) 10 psig (69 kPa 3.0 psig max 5% of gauge gauge) < Set ≤ 15 (27.58 kPa gauge) setpoint. [...] 7 Section 5.4.4 Endurance Test A slam shut shall withstand 150 cycles of opening and closing of the valve under the following test method: a) Set the slam shut as described in Section 5.5.3 5.3.3, “Set Point.” b) The cycle test shall include 75 cycles at room temperature, 50 cycles at the lowest temperature in the specified range and 25 cycles at the highest temperature in the specified range. [...] For set points greater than 10 psig (69 kPa gauge), lock-up pressure shall not be greater than 110% of set point, See Section 5.3.3.