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 ...

The GasGuard™ tamper-resistant locking valve cap helps prevent refrigerant ... and brass core easily screws and locks onto ¼-inch or 5⁄16-inch (6.35-mm and 7.93-mm) threaded refrigerant Schrader ...