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// CODE SNIPPET

1308.7.5 Venting of Line Pressure Regulators

Los Angeles Mechanical Code > 13 Fuel Gas Piping > 1308.0 Gas Piping System Design, Materials, and Components > 1308.7 Gas Pressure Regulators > 1308.7.5 Venting of Line Pressure Regulators
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Line pressure regulators shall comply with the following:
  1. An independent vent to the exterior of the building, sized in accordance with the regulator manufacturer's instructions, shall be provided where the location of a regulator is such that a ruptured diaphragm will cause a hazard. Where more than one regulator is at a location, each regulator shall have a separate vent to the outdoors, or where approved by the Authority Having Jurisdiction, the vent lines shall be permitted to be manifolded in accordance with accepted engineering practices to minimize backpressure in the event of diaphragm failure. Materials for vent piping shall comply with Section 1308.5.

    Exception: A regulator and vent limiting means combination listed in accordance with CSA Z21.80 shall be permitted to be used without a vent to the outdoors.
  2. The vent shall be designed to prevent the entry of water, insects, or other foreign materials that will cause blockage.
  3. The regulator vent shall terminate not less than 3 feet (914 mm) from a source of ignition.
  4. At locations where regulators will be submerged during floods, a special anti flood-type breather vent fitting shall be installed, or the vent line shall be extended above the height of the expected flood waters.
  5. A regulator shall not be vented to the appliance flue or exhaust system. [NFPA 54:5.8.6.1]

Related Code Sections


1208.8.4 Fuel Gas Piping, Venting of Line Pressure Regulators
Line pressure regulators shall comply with all of the following: An independent vent to the exterior of the building, sized in accordance ...
Los Angeles Plumbing Code > 12 Fuel Gas Piping > 1208.0 Gas Piping System Design, Materials, and Components > 1208.8 Gas Pressure Regulators > 1208.8.4 Venting of Line Pressure Regulators
1308.7.4 Fuel Gas Piping, Venting of Line Pressure Regulators
Line pressure regulators shall comply with all of the following: An independent vent to the exterior of the building, sized in accordance ...
Los Angeles Mechanical Code > 13 Fuel Gas Piping > 1308.0 Gas Piping System Design, Materials, and Components > 1308.7 Gas Pressure Regulators > 1308.7.4 Venting of Line Pressure Regulators
1308.7.5 Fuel Gas Piping, Venting of Line Pressure Regulators
Line pressure regulators shall comply with the following: An independent vent to the exterior of the building, sized in accordance ...
Los Angeles Mechanical Code > 13 Fuel Gas Piping > 1308.0 Gas Piping System Design, Materials, and Components > 1308.7 Gas Pressure Regulators > 1308.7.5 Venting of Line Pressure Regulators
1310.0 Fuel Gas Piping, Venting of Gas Appliance Pressure Regulators
to the pilot. For manufactured gas, the need for a flame arrester in the vent piping shall be determined. Vent lines from an appliance pressure regulator ...
Los Angeles Mechanical Code > 13 Fuel Gas Piping > 1310.0 Venting of Gas Appliance Pressure Regulators
507.21 Water Heaters, Venting of Gas Appliance Pressure Regulators
manufactured gas, the need for a flame arrester in the vent piping shall be determined. A vent line(s) from an appliance pressure regulator ...
Los Angeles Plumbing Code > 5 Water Heaters > 507.0 Appliance and Equipment Installation Requirements > 507.21 Venting of Gas Appliance Pressure Regulators
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