---
kind: "section"
citation: "49 C.F.R. § 179.103-4"
title: "49"
number: "179.103-4"
heading: "Safety relief devices and pressure regulators."
url: "https://uscodex.org/cfr/49/179.103-4"
---

# §179.103-4. Safety relief devices and pressure regulators.

- (a) Safety relief devices and pressure regulators must be located on top of the tank near the center of the car on a nozzle, mounting plate or recess in the shell. Through or stud bolts, if used, must not enter the tank.
- (b) Metal guard of approved design must be provided to protect safety relief devices and pressure regulators from damage.

## Notes

### Amendments

[Amdt. 179-10, 36 FR 21348, Nov. 6, 1971]

### Authority

Authority: 49 U.S.C. 5101-5128; 49 CFR 1.81 and 1.97.

### Source

Source: 29 FR 18995, Dec. 29, 1964, unless otherwise noted. Redesignated at 32 FR 5606, Apr. 5, 1967.

### Amendments

[Amdt. 179-10, 36 FR 21348, Nov. 6, 1971]