49 CFR 230.51 - Number and location.

Regulations last checked for updates: Jun 13, 2025

Title 49 - Transportation last revised: Jun 06, 2025

View all text of Subpart B [§ 230.23 - § 230.65]

§ 230.51 - Number and location.

Every boiler shall be equipped with at least two water glasses. The lowest reading of the water glasses shall not be less than 3 inches above the highest part of the crown sheet. If gauge cocks are used, the reading of the lowest gauge cock shall not be less than 3 inches above the highest part of the crown sheet.

authority: 49 U.S.C. 20103,20107,20702; 28 U.S.C. 2461 note; and 49 CFR 1.89

source: 64 FR 62865, Nov. 17, 1999, unless otherwise noted.

cite as: 49 CFR 230.51