TANK VALVES, ACCESSORIES, FILL PIPES, AND DISCHARGE PIPES

Subpart 1. Shut-off valves. Shut-off valves must be: A. provided for all connections except those with a No. 54 (0.055 inch) drill size restriction, plugs, pressure relief valves, and thermometer wells; and B. located as close to the tank as practical. Subp. 2. Check valve. A check valve must be installed on the fill connection, if located below the maximum liquid level, and a remotely operated shut-off valve on other connections located below the maximum liquid level according to part 1513.0200 , subpart 8. Subp. 3. Refrigerated containers. A refrigerated container must be equipped with an approved liquid level gauging device and high liquid level alarm.