【Common Issues in Haichuan Pipeline Design】--The often-overlooked requirements for setting up drain holes on safety valves
Thread Content
According to the \"Code for Design of Layout of Metal Piping in Petrochemical Industries\" SH/T3012-2011, 10.2.9: For the safety valve outlet pipe that leads directly upward into the atmosphere, a drainage hole with a diameter of 6 mm to 10 mm should be provided near the elbow at the lower end of this pipe.
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