ANSI AWWA C207-23 PDF
Name in English:
St ANSI AWWA C207-23
Name in Russian:
Ст ANSI AWWA C207-23
Original standard ANSI AWWA C207-23 in PDF full version. Additional info + preview on request
Full title and description
ANSI/AWWA C207-23 — Steel Pipe Flanges for Waterworks Service, Sizes 4 In. Through 144 In. (100 mm Through 3,600 mm). This AWWA standard provides minimum requirements, dimensions, pressure-class ratings, material and marking requirements for ring-type (slip-on) and blind steel flanges used with steel water pipe and fittings.
Abstract
C207-23 specifies dimensional data, allowable working pressures (class B, D, E, F), material and fabrication provisions, purchaser options (for example gasket ID), marking and acceptance criteria, and tables of flange dimensions and bolt drilling for sizes 4 in. through 144 in. Major editorial and technical updates for the 2023 edition include updated acceptance language, added purchaser options, clarified gasket assembly stress wording, corrected bolt/drill notes and marking requirements, and added bibliography references.
General information
- Status: Current AWWA standard (2023 edition).
- Publication date: 2023.
- Publisher: American Water Works Association (AWWA).
- ICS / categories: 23.040 — Pipeline components and pipelines; specifically flanges, couplings and joints (ICS 23.040.60).
- Edition / version: C207-23 (2023 edition).
- Number of pages: 15 (PDF/printed edition length).
Scope
This standard covers ring-type slip-on flanges and blind flanges for steel pipe and fittings intended for waterworks service in sizes 4 in. through 144 in. It defines flange types, dimensional and drilling tables, pressure-class assignments (A/B/D/E/F or class-designated working pressures), material and fabrication requirements, marking, and purchaser options. The standard is intended for flanges to be welded to steel pipe or fittings and does not account for external bending moments from unsupported piping spans.
Key topics and requirements
- Flange types: ring-type slip-on (ring) and blind flanges for waterworks service.
- Dimensional tables: outside diameter, bolt circle, number and size of bolt holes, flange thickness for sizes 4–144 in.
- Pressure classes and working-pressure limits (classes include B, D, E, F with typical working pressures up to ~300 psi for highest class).
- Material and mechanical property limits for carbon/steel items used in water service; acceptable welding attachment practices.
- Gasket and bolting considerations, purchaser options (for example gasket ID), and assembly stress guidance.
- Marking, inspection and acceptance requirements; bibliography and normative references (including cross-references to related AWWA and ASTM/ASME documents).
Typical use and users
Used by municipal water utilities, design engineers, pipeline fabricators, flange manufacturers, procurement/specification writers, and contractors for specifying and supplying steel flanges in water distribution, treatment, pump stations and other waterworks infrastructure projects. The standard ensures interchangeability, consistent pressure ratings, and appropriate material and marking controls for water-service flanges.
Related standards
Commonly referenced standards include other AWWA standards for steel pipe and fittings (for example ANSI/AWWA C200 and C208), AWWA C228 (stainless-steel flanges), ASME/ANSI flange standards (ASME B16.5, B16.47) for flange pattern compatibility, and relevant ASTM specifications for bolting and materials. NSF/ANSI potable-water material requirements referenced in the 2023 revision are also noted where applicable.
Keywords
AWWA C207, steel flanges, ring flange, blind flange, waterworks, flange dimensions, bolt drilling, pressure class, welding, flange marking, ANSI/AWWA, pipeline components.
FAQ
Q: What is this standard?
A: ANSI/AWWA C207-23 is the AWWA standard that sets minimum requirements, dimensional tables, pressure-class ratings, material, marking and acceptance criteria for steel ring-type (slip-on) and blind flanges used in waterworks piping systems (4 in. through 144 in.).
Q: What does it cover?
A: It covers flange types (ring-type slip-on and blind), detailed flange dimensions and bolt drilling, allowable working pressures by class, material and fabrication requirements (including welding), gasket/bolting considerations and marking/acceptance criteria. It does not address external moments from unsupported pipe spans.
Q: Who typically uses it?
A: Municipal water agencies, consulting civil/mechanical engineers, flange and pipe manufacturers, fabricators, contractors and specification writers who need consistent, water-specific flange dimensions, ratings and procurement language.
Q: Is it current or superseded?
A: The C207-23 edition is the current (2023) published edition. Users should confirm they are referencing the 2023 version for the latest editorial and technical updates.
Q: Is it part of a series?
A: Yes — C207 is part of the AWWA suite of standards for steel pipe, fittings and accessories (for example C200, C208, C210, C213, plus the related stainless steel C228), and is often used together with other AWWA and ASTM/ASME standards for comprehensive piping specifications.
Q: What are the key keywords?
A: Steel flanges, ring flange, blind flange, AWWA C207, flange dimensions, bolt pattern, pressure class, waterworks, welding, marking.