During one of our never-ending technical discussions, Jim Grubbs at Jim Grubbs Motorsports (JGM) suggested that we take a look at the flow difference between 30- and 45-degree valve seats. While ...
The agency's March 13 order gives owners 60 days to replace any 3-inch McKenzie UNNR ball valve in a tank car used to transport any hazardous material described in 49 CFR 172.101 and 90 days to remove ...
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