AWWA Flange Suppliers – High-Quality AWWA C207 Flanges from Sumitec
Sumitec is a manufacturer and supplier of AWWA C207 flanges in the USA, serving waterworks, wastewater, and industrial piping projects. With over 30 years of experience and ISO 9001 certification, Sumitec produces flanges that comply with American Water Works Association (AWWA) standards.
Why Choose Sumitec Inc for AWWA Flanges?
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Each product is manufactured under ISO 9001 standards and complies with AWWA C207 specifications.
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Available product types include slip-on, blind, and ring-type flanges across all AWWA C207 classes: B, D, E, and F.
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Flanges are offered in carbon steel and stainless steel, with galvanized, painted, or custom finishes available.
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Quick responses to RFQs, compliance documentation, and free shipping for orders over $5,000 in the continental US.
What Are AWWA C207 Flanges?
AWWA C207 is the standard for ring, hub, and blind flanges for water pipes, both above and below ground. These flanges are made for steel pipes and fittings, are available in sizes from 4” to 144”, and can be welded to steel pipes per AWWA recommendations. Classes B, D, E, and F signify different pressure ratings (see below).
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Support available through US-based sales and technical teams.
Pressure Ratings Reference
| Flange Class | Pressure Rating (psi) |
|---|---|
| B | 85 |
| D | 150–175 |
| E | 275 |
| F | 300 |
These ratings apply to ring-type and blind flanges.
Where Are Sumitec AWWA Flanges Used?
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Municipal water distribution
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Wastewater and stormwater management
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Industrial process piping
Common Questions
Q: What is the bolt length for AWWA C207?
The length is determined as the sum of (2) mating flange thicknesses, gasket thickness, 2 times the nut thickness, and washer thickness.
Q: What is the difference between AWWA C207 and C228?
C207 refers to carbon steel flanges. C228 is the AWWA standard for stainless steel flanges. For stainless steel options, see AWWA C228 information here.
Q: What is the maximum pressure for C207?
The maximum pressure is 300 psi (Class F ring or blind type flange).
Commitment to Customer Success
Sumitec provides quotations, compliance documentation, and customer support throughout the order and project process. Questions or order issues are handled directly by the company’s US team.
Contact Sumitec for a quotation or technical consultation.
Free shipping on orders over $5,000 in the continental US. For more details and educational articles, visit our Sumitec Blog.
