A safety valve with a socket welded inlet connection, indicates an inlet size on the valve nameplate of 0.75". How does this work? If the inlet piping is 0.75" NPS, Sched 80, the pipe ID is 0.742". But if the inlet piping is 0.75", Sched 160, the pipe ID is only 0.619". Wouldn't the Sched 160 piping create an inlet flow restriction?
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