AWWA C207 Slip-On Flange (Steel-Ring & Hubbed Type)

AWWA C207 slip-on flanges are designed for waterworks and municipal piping systems requiring large-diameter, low-pressure flange connections. Manufactured in steel-ring or hubbed type construction, AWWA C207 slip-on flanges provide reliable performance for steel pipe applications in water transmission and distribution projects.

Available in Class B, D, E and F pressure ratings, AWWA C207 slip-on flanges comply with AWWA C207 dimensional and material requirements and are commonly used in water supply, wastewater and industrial water systems.

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AWWA C207 Slip-On Flange Specifications

• Standard: AWWA C207

• Flange Type: Slip-On Flange

• Construction: Steel-Ring / Hubbed Type

• Pressure Classes: Class B, D, E, F

• Typical Application: Waterworks & municipal piping

• Pipe Compatibility: Steel pipe

AWWA C207 flanges are available in sizes from 4” through 120” nominal pipe sizes. Available in Ring and Blind. All of the above can be ordered in both carbon and stainless steel grades.

AWWA C207 Slip-On Flange Pressure Classes

Class B

AWWA C207 Class B slip-on flanges are typically used for low-pressure water transmission systems where large-diameter piping and economical flange solutions are required.

Class D

Class D is one of the most commonly specified pressure ratings for municipal water supply and wastewater systems, offering a balanced combination of pressure capacity and cost efficiency.

Class E

AWWA C207 Class E slip-on flanges are designed for applications requiring higher pressure ratings, such as long-distance water transmission pipelines and elevated pumping systems.

Class F

Class F provides the highest pressure rating under AWWA C207 and is selected for demanding waterworks applications where increased design pressure and safety margins are required.

AWWA Flanges can be made of A105 Flange grade.widely used in  steel water pipe connection.

AWWA C207-18 STEEL PIPE FLANGES FOR WATERWORKS SERVICE—SIZES 4 IN. THROUGH 144 IN. (100 MM THROUGH 3,600 MM)

	Brida AWWA C207 Steel-Ring (Brida plana):
	AWWA C207 Steel-Ring Class B  AWWA C207 Steel-Ring Class D  AWWA C207 Steel-Ring Class E  AWWA C207 Steel-Ring Class F

	Bridas AWWA C207 Ciega (Blind flange):
	AWWA C207 Ciega Class B  AWWA C207 Ciega Class D  AWWA C207 Ciega Class E  AWWA C207 Ciega Class F

	Bridas with Hub
	AWWA C207 Hub Class D  AWWA C207 Hub Class E

Materials Available for AWWA C207 Slip-On Flanges

AWWA C207 slip-on flanges are available in a range of carbon steel materials suitable for waterworks and municipal piping applications. Material selection is based on project specifications, pressure requirements and environmental conditions.

Commonly supplied materials include:

• Carbon Steel (A36 equivalent) – widely used for general water transmission and distribution systems

• Carbon Steel ASTM A105

All materials used for AWWA C207 slip-on flanges comply with applicable AWWA C207 requirements and are selected to ensure reliability, durability and long-term service performance in waterworks applications.

Steel-Ring vs Hubbed AWWA C207 Slip-On Flange

AWWA C207 slip-on flanges are available in steel-ring and hubbed designs.
Steel-ring flanges are commonly used for large-diameter applications due to their reduced weight and material efficiency. Hubbed slip-on flanges provide additional rigidity and are preferred where enhanced structural support is required.

The choice between steel-ring and hubbed construction depends on pipe size, installation conditions and project specifications.

AWWA C207 Slip-On Flange vs AWWA B16.5 Flange

AWWA C207 slip-on flanges and ASME B16.5 flanges are designed for different application standards. AWWA C207 flanges are primarily used in waterworks and municipal piping systems, focusing on large diameters and lower pressure ratings.

In contrast, ASME B16.5 flanges are intended for industrial piping systems with higher pressure-temperature ratings and smaller nominal pipe sizes. For water transmission and distribution projects involving large-diameter steel pipe, AWWA C207 slip-on flanges are generally the preferred solution.

Applications of AWWA C207 Slip-On Flanges

• Municipal water supply pipelines

• Water transmission and distribution systems

• Wastewater treatment facilities

• Industrial water and utility projects

Related AWWA C207 Flanges

• AWWA C207 Blind Flange

• AWWA C207 Hubbed Flange