This article introduces double flanged butterfly valves – the heaviest, most rigid butterfly valve design with integral flanges on both ends for bolted pipeline connections. Self-supporting and capable of handling high pressures (PN16–PN40) and large diameters (DN50–DN2000+), these valves are ideal for water supply, wastewater, chemical processing, power generation, and oil and gas applications. As an LRQA-certified ISO 9001:2015 OEM/ODM manufacturer with over 15 years of export experience, Tianjin Worlds Valve Co., Ltd. offers fully customizable solutions to meet specific project requirements.

Double flanged butterfly valve for heavy-duty systems: ductile iron body, CF8M disc, vulcanized EPDM seat for zero leakage and metal isolation. Electric actuator (on-off/modulating with feedback), PN16, fully customizable. Certified ISO 9001, CE, UKCA, WRAS, ACS; 100% pressure tested with traceable certs. Factory direct, 15–40 days lead time.

Tianjin Worlds Valve is a direct ISO 9001 butterfly valve manufacturer with 19+ years of experience. We offer wafer, lug, flanged, PTFE-lined and triple eccentric valves from DN50 to DN3000, exported to 50+ countries with full after-sales support.

This 14” double flanged butterfly valve features a WCB body, CF8 disc, vulcanized Viton (FKM) seat, and SS304 stem, rated Class 150LB. The permanently bonded Viton seat provides excellent resistance to oils, fuels, acids, and high temperatures up to 200°C. Ideal for chemical processing, oil & gas, and high-temperature industrial applications. Manufactured by an ISO 9001 certified OEM supplier.

This 2” double flanged butterfly valve from Tianjin Worlds Valve combines a 1.4462 super duplex disc, vulcanized EPDM seat, and ductile iron body with customizable epoxy coating (any RAL). The non-replaceable seat ensures leak-proof sealing, while the super duplex disc provides twice the strength and superior chloride resistance for seawater and chemical applications. Hand lever operated, PN10/PN16/Class 150, fully customizable. ISO 9001 certified OEM.

This comprehensive guide details the five essential design pillars that distinguish a high-quality butterfly valve: disc design and material, seat sealing performance, body and connection construction, stem integrity, and bearing/actuation systems. It explains how these features directly impact valve lifespan, reliability, and total cost of ownership. The article also provides a practical pre-purchase checklist for engineers and buyers, covering pressure ratings, material compatibility, certifications, and supplier support. Highlighting the expertise of Tianjin Worlds Valve Co., Ltd., it illustrates how their certified, customizable butterfly valves are engineered to meet demanding global industrial standards.

This Heavy Duty Electric Butterfly Valve with Double Flanged is designed for critical applications that demand robust construction, reliable automation, and long-term performance under high pressure, high cycle, or harsh environmental conditions. Combining a durable double-flanged body with a precision electric actuator, it provides a complete, maintenance-friendly solution for remote and automated flow control in water, wastewater, power, and industrial processing.

The Bare Shaft Double Flanged Butterfly Valve provides a fundamental and versatile flow control solution designed for seamless integration with any actuation system. Featuring an unfinished shaft extension and robust double-flanged construction, this valve serves as the ideal core component for customized automation across water, HVAC, and industrial processing applications.

The Electric Actuator Double Flanged Butterfly Valve integrates robust flanged construction with precise electric actuation to deliver reliable automated flow control in demanding industrial applications. This complete package solution ensures optimal performance in water treatment, HVAC, chemical processing, and other automated systems requiring remote operation and precise modulation.

As an ISO 9001-certified manufacturer, we provide full material traceability and performance testing. Custom configurations are available to meet specific pressure, temperature, and media requirements.