49 CFR § 229.111 - Water-flow indicator.

---
identifier: "/us/cfr/t49/s229.111"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 229.111 - Water-flow indicator."
title_number: 49
title_name: "Transportation"
section_number: "229.111"
section_name: "Water-flow indicator."
chapter_name: "FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "229"
part_name: "RAILROAD LOCOMOTIVE SAFETY STANDARDS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 20103, 20107, 20133, 20137-38, 20143, 20168, 20701-03, 21301-02, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89."
regulatory_source: "45 FR 21109, Mar. 31, 1980, unless otherwise noted."
cfr_part: "229"
---


# 229.111 Water-flow indicator.

(a) Steam generators shall be equipped with an illuminated visual return water-flow indicator.

(b) Steam generators shall be equipped with an operable test valve or other means of determining whether the steam generator is filled with water. The fill test valve may not discharge steam or hot water into the steam generator compartment.