Pipe flanges are incorporated in a wide range of industries such as waterworks, oil and gas, petrochemical, wind energy and so much more. Water Works is one of the leading industries we serve at Coastal Flange. The water works field uses pipe flanges to transfer water through distribution pipelines.
When it comes to the waterworks industry, the American Water Works Association (AWWA) and American National Standards Institute (ANSI) have created the framework for industry standards of water related pipe flanges. AWWA C207-18 (Revision of ANSI/AWWA C207-13) covers steel pipe flanges ranging in 4-inch diameter to 144-inches. AWWA C228-19 (Revision of ANSI/AWWA 228-14) includes stainless steel pipe flange joints for water services in size 2-inch through 72-inch diameter. Materials used in these standards are to comply with the requirements of the Safe Drinking Water Act and federal regulations regarding water systems.
AWWA C207-18 flanges consist of ring-type slip-on flanges and blind flanges. The purpose of this standard is to provide minimum requirements for a variety of steel flanges for attachment to steel water pipe and fittings. Materials for AWWA C207-18 are various types of carbon grades. There are four pressure classes in this category: Class B (86 psi), Class D (175-150 psi), Class E (275 psi), and Class F (300 psi).
AWWA C228-19 flanges consist of stainless-steel ring-type, slip-on flanges and blind flanges. The purpose of this standard is to provide minimum requirements for stainless-steel flanges for attachment to stainless-steel piping systems. There are five pressure classes in this category: Class SA (50psi), Class SB (86 psi), Class SD (175-150 psi), Class SE (275 psi) and Class SF (300 psi).
Coastal Flange is the leading manufacturer of large diameter AWWA pipe flanges in the United States. We carry stock in 4-inch to 96-inch AWWA flanges in all material grades. Our supply chains permit us with a quick turnaround time in flanges over 96 inches. Learn more about our AWWA product catalog here.