49 CFR § 192.355 - Customer meters and regulators: Protection from damage.
---
identifier: "/us/cfr/t49/s192.355"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 192.355 - Customer meters and regulators: Protection from damage."
title_number: 49
title_name: "Transportation"
section_number: "192.355"
section_name: "Customer meters and regulators: Protection from damage."
chapter_name: "PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "D"
subchapter_name: "PIPELINE SAFETY"
part_number: "192"
part_name: "TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 and 49 CFR 1.97."
regulatory_source: "35 FR 13257, Aug. 19, 1970, unless otherwise noted."
cfr_part: "192"
---
# 192.355 Customer meters and regulators: Protection from damage.
(a) *Protection from vacuum or back pressure.* If the customer's equipment might create either a vacuum or a back pressure, a device must be installed to protect the system.
(b) *Service regulator vents and relief vents.* Service regulator vents and relief vents must terminate outdoors, and the outdoor terminal must—
(1) Be rain and insect resistant;
(2) Be located at a place where gas from the vent can escape freely into the atmosphere and away from any opening into the building; and
(3) Be protected from damage caused by submergence in areas where flooding may occur.
(c) *Pits and vaults.* Each pit or vault that houses a customer meter or regulator at a place where vehicular traffic is anticipated, must be able to support that traffic.
[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-58, 53 FR 1635, Jan. 21, 1988]