ANSI B109 Family of Standards For Gas Displacement Meters and Service Regulators

The B109 Committee oversees the development and maintenance of consensus standards related to gas meters and service regulators. View the latest B109 Committee Roster and the current B109 Committee Procedures.

Currently, there are five B109 standards that have achieved recognition by the American National Standards Institute (ANSI):

Purchase a copy of each standard in the AGA Publication Store.

Please contact Luis Escobar at lescobar@aga.org if you are interested in becoming a member or observer of ANSI B109, or if you would like to be part of the review process for any of the standards above.

Submitting Proposed Changes:

The ANSI B109 Standards are under continuous maintenance therefore anyone may propose changes to the standards at any time. Each change will be considered by the B109 Committee at their next meeting, and may be referred to a standard-specific task group for their review and recommendation before the next B109 Committee meeting.

If you have a proposed change to any of the standards above, please fill out this form and submit to the B109 Committee Secretary, Luis Escobar at lescobar@aga.org. 

Announcements:

2024 Fall Committee Meeting

The B109 Committee will meet on Wednesday, September 20, 2023 at the Omni William Penn in Pittsburgh, PA in conjunction with the 2023 AGA Operations Section Fall Committee Meetings. Meeting agenda posted in August 2024. Draft Minutes available here.

Newly Reaffirmed Standards: B109.1 and B109.3

The American National Standards Institute (ANSI) approved the reaffirmation of the existing B109.1 and B109.3 Standards on April 16, 2024. Read the announcement in the April 26, 2024 edition of the ANSI Standards Action newsletter. Reaffirmation is when a standards committee (B109 Committee in this case) reviews an existing standard and determines it is current and doesn’t need immediate revision. Both standards were last updated in 2019. This reaffirmed standard became available for purchase on August 28, 2024.

New Standard: B109.5 Commercial and Industrial Service Regulators

The American National Standards Institute (ANSI) approved the new B109 Standard for elf-Operated Diaphragm-Type Natural Gas Service Regulators For Nominal Pipe Size up to and including 2 inches (50 mm) and inlet pressures up to 125 psig (861.8 kPa) with outlet pressure of 20 psig (138 kPa) or less not covered in ANSI B109.4 on April 16, 2024. Read the announcement in the April 26, 2024 edition of the ANSI Standards Action newsletter. This new standard became available for purchase on August 1, 2024.

[CLOSED] ANSI Public Review: B109.1 and B109.3 Standards

The B109 Committee has decided to reaffirm the B109.1 Standard (Diaphragm-Type Gas Displacement Meters (Under 500 Cubic Feet Per Hour Capacity)) and the B109.3 Standard (Rotary-Type Gas Displacement Meters) without change from the 2019 edition of each standard. Public comments on the reaffirmation of these standards are due to the lescobar@aga.org by April 1, 2024 and must be submitted on this Public Comment Form.

[CLOSED] 2nd ANSI Public Review: B109.5 Standard

The portion of the draft new proposed B109.5 Standard (Self-Operated Diaphragm-Type Natural Gas Service Regulators for nominal pipe size up to and including 2 inches (50 mm) and inlet pressures up to 125 psig (861.8 kPa) with outlet pressures of 20 psig (138 kPa) or less not covered in ANSI B109.4) is available for review and comment. Public comments are due to lescobar@aga.org by February 25, 2024 and must be submitted on this Public Comment Form.

New Standard: B109.6 Single Path Ultrasonic Gas Meters

The American National Standards Institute (ANSI) approved the new B109 Standard for Single Path Ultrasonic Gas Meters (Under 1400 Cubic Feet Pet Hour Capacity) on January 9, 2024. Read the announcement in the January 19, 2024 edition of the ANSI Standards Action newsletter. This new standard became available for purchase on January 26, 2024.

[CLOSED] ANSI Public Review: B109.5 Standard

The Draft of the new proposed B109.5 Standard (Self-Operated Diaphragm-Type Natural Gas Service Regulators for nominal pipe size up to and including 2 inches (50 mm) and inlet pressures up to 125 psig (861.8 kPa) with outlet pressures of 20 psig (138 kPa) or less not covered in ANSI B109.4) is available for review and comment. Public comments are due to lescobar@aga.org by October 2, 2023 and must be submitted on this Public Comment Form.

2023 Fall Committee Meeting

The B109 Committee will meet on Wednesday, September 20, 2023 at the Omni William Penn in Pittsburgh, PA in conjunction with the 2023 AGA Operations Section Fall Committee Meetings. Meeting agenda posted in August 2023.

[CLOSED] ANSI Public Review: B109.6 Standard

The Draft of the new proposed B109.6 Standard (Single Path Ultrasonic Gas Meter under 1400 cubic feet per hour capacity) is available for review and comment. Public comments are due to lescobar@aga.org by July 3, 2023 and must be submitted on this Public Comment Form.

2022 Fall Committee Meeting

The B109 Committee met on Wednesday, September 14, 2022 at the Disneyland Hotel in Anaheim CA in conjunction with the 2022 AGA Operations Section Fall Committee Meetings. Meeting agenda posted in August 2022.

[CLOSED] Comment Period: Scope Revision

AGA has submitted revisions to the scope of the accreditiation on file with ANSI for the B109 committee. The revised scope is as follows: “Accredited Standards Committee B109 is responsible for the development and maintenance of standards for gas meters, gas service regulators and related devices that are used in the revenue measurement of fuel gas. For both new types and newly constructed meters and service regulators, these standards include: definitions, construction criteria, performance criteria, test methods, in-service performance criteria, installation requirements/practices, and equipment.” Please submit any comments or questions by July 11, 2022 to Luis Escobar, lescobar@aga.org.

Published

ANSI approved the revised B109.4 Standard on October 22, 2021 (announcement on page 28 of the October 19th ANSI Standards Action newsletter). The standard now addresses regulator slam-shuts, including slam-shut test procedures and marking requirements. ANSI B109.4-2021 was added to the AGA publication store on November 24, 2021 and is now available for purchase.

New Standards Project

AGA submitted a Project Initiation Notification (PINS) to ANSI for the development of a new standard: BSR B109.6-202x, Single Path Ultrasonic Gas Meters (Under 1400 Cubic Feet Per Hour Capacity). Directly and materially affected interests wishing to receive more information or to submit comments must contact Luis Escobar (lescobar@aga.org) by December 12, 2021. Read the announcement in the November 12, 2021 edition of the ANSI Standards Action. 

[CLOSED] ANSI Public Review: B109.4 Standard

The Revision Draft of the B109.4 Standard (Self-Operated Diaphragm-Type Natural Gas Service Regulator for nominal pipe size 1-1/4 inches and smaller with outlet pressures of 2 psi and less) is available for review and comment. Public comments are due to  lescobar@aga.org by August 23, 2021 and must be submitted on this Public Comment Form. No public comments were received.

New Standards Project

AGA submitted a Project Initiation Notification (PINS) to ANSI for the development of a new standard: BSR B109.5-202x, Self-Operated Diaphragm-Type Natural Gas Service Regulators for Nominal Pipe Size Up To 2 Inches (50.8 mm). Directly and materially affected interests wishing to receive more information or to submit comments must contact Luis Escobar (lescobar@aga.org) by June 26, 2020. Read the announcement in the May 29, 2020 edition of the ANSI Standards Action. 

Revised B109 Committee Procedures

In May 2020, the committee updated our patent policy to bring it into alignment with the latest version of the ANSI Essential Requirements. Read the ANSI B109 Procedures here.

History of the Development of ANSI B109:

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