View all text of Subjgrp 88 [§ 154.500 - § 154.550]
§ 154.536 - Cargo tank gauging and measuring connections.
Unless the outward flow from a cargo tank is less than the flow through a circular hole of 1.4 mm (0.055 in.) in diameter, cargo tank connections for gauging or measuring devices must have the excess flow, shut-off, or quick-closing shut-off valves under § 154.530 or § 154.532.