Engine_2014 : Steam Plants - 246/1951
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| Coast Guard Regulations (46 CFR Part 52) concerning boiler superheater safety valves require that the valve __________. |
| A) be set at a lifting pressure that is higher than the drum safety valve |
| B) have a drain opening tapped for not less than 1/4 in. NPS |
| C) be constructed with a cast iron body |
| D) have a threaded inlet connection if greater than 2 in. NPS |
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