---
kind: "section"
citation: "49 C.F.R. § 192.181"
title: "49"
number: "192.181"
heading: "Distribution line valves."
url: "https://uscodex.org/cfr/49/192.181"
---

# §192.181. Distribution line valves.

- (a) Each high-pressure distribution system must have valves spaced so as to reduce the time to shut down a section of main in an emergency. The valve spacing is determined by the operating pressure, the size of the mains, and the local physical conditions.
- (b) Each regulator station controlling the flow or pressure of gas in a distribution system must have a valve installed on the inlet piping at a distance from the regulator station sufficient to permit the operation of the valve during an emergency that might preclude access to the station.
- (c) Each valve on a main installed for operating or emergency purposes must comply with the following:
  - (1) The valve must be placed in a readily accessible location so as to facilitate its operation in an emergency.
  - (2) The operating stem or mechanism must be readily accessible.
  - (3) If the valve is installed in a buried box or enclosure, the box or enclosure must be installed so as to avoid transmitting external loads to the main.

## Notes

### Authority

Authority: 30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 et. seq., and 49 CFR 1.97.

### Source

Source: 35 FR 13257, Aug. 19, 1970, unless otherwise noted.