---
kind: "section"
citation: "46 C.F.R. § 154.546"
title: "46"
number: "154.546"
heading: "Excess flow valve: Closing flow."
url: "https://uscodex.org/cfr/46/154.546"
---

# §154.546. Excess flow valve: Closing flow.

- (a) The rated closing flow of vapor or liquid cargo for an excess flow valve must be specially approved by the Commandant (CG-ENG).
- (b) An excess flow valve allowed under [§ 154.532(b)](/cfr/46/154.532.md?p=b) must close automatically at the rated closing flow.

## Notes

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

### Authority

Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]