This wafer butterfly valve features a ductile iron body, CF8 disc, and a field-replaceable soft EPDM seat. Available from 2″ to 120″ (DN50-DN3000), it suits water, wastewater, and HVAC applications. All materials are fully customizable, and the replaceable seat reduces maintenance downtime.

This concentric wafer butterfly valve features a ductile iron body, CF8 stainless steel disc, and PTFE seat. The PTFE seat provides outstanding chemical resistance, a wide temperature range (-35℃to +200℃), and low friction operation. The concentric design ensures symmetric sealing, low torque, and bi-directional flow capability. Available DN50-DN600, PN10/PN16/Class 150. Suitable for chemical dosing, water treatment, food processing, and high-purity applications. Disc and seat materials are fully customizable for more aggressive service conditions. Manufactured by Tianjin Worlds Valve Co., Ltd., an ISO 9001 certified OEM supplier.

This product introduces a two-shaft wafer butterfly valve featuring a ductile iron body, CF8 stainless steel disc, EPDM seat, and worm gear operator. The two-shaft design uses independent upper and lower stems, simplifying maintenance and reducing the risk of seizure. The worm gear provides effortless self-locking operation with visual position indication. Available DN50-DN600, PN10/PN16, suitable for water, HVAC, and general industrial services. Disc and seat materials are fully customizable for more aggressive media.

This wafer butterfly valve from Tianjin Worlds Valve Co., Ltd. combines a CF8 (ASTM A351 Grade CF8) stainless steel disc with an NBR rubber seat, built into a ductile iron (GGG40) wafer body. The standard NBR seat performs well in oil, fuel, aliphatic hydrocarbon, and mild chemical media. Beyond this baseline configuration, all major components are fully customizable: disc materials include CF8, CF8M, Duplex 2205, Super Duplex 2507, and Aluminum Bronze; seat materials include EPDM, Viton (FKM), and PTFE. The product covers DN50–DN3000, fits PN10/PN16/Class 150 pipelines, and conforms to ISO 5752 face-to-face dimensions. Suitable for water treatment, oil handling, HVAC, food processing, and general industrial services.

Butterfly valves offer a compact, cost-effective solution for on/off and throttling control in large-diameter systems. Their quarter-turn operation ensures quick response, while resilient seats provide reliable sealing with low pressure drop. Ideal for water, HVAC, and general industrial services, they balance performance with easy maintenance where space and budget are key. For precise throttling or extreme service, globe or ball valves may be preferred.

Discover how butterfly valves, especially the resilient seated type, serve as the ideal choice for water treatment, HVAC, and industrial pipelines. This article details their core advantages—compact design, quick operation, reliable sealing, and cost-effectiveness—along with a professional selection guide. Explore high-quality, customizable solutions from Tianjin Worlds Valve Co., Ltd., an ISO 9001, CE, and WRAS certified manufacturer offering OEM/ODM support.

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.

This guide clarifies the naming conventions and key variants of industrial butterfly valves to aid in proper selection. It explains that terms like Wafer, Lug, Flanged, and Resilient Seated directly indicate critical design features such as connection type, sealing mechanism, and service capability.

The article details the specific applications of each type: compact Wafer valves for general use, Lug valves for dead-end service, Flanged valves for high-pressure systems, and Resilient Seated valves for bubble-tight shutoff. It provides a framework for specification by outlining four essential selection factors: connection type, offset design, seat material, and dead-end service needs.

Finally, it positions Tianjin Worlds Valve as a provider of ISO 9001-certified, customizable solutions across this full spectrum of butterfly valves for water, HVAC, chemical, and industrial applications.

Selecting the right butterfly valve for your system is a crucial decision that can affect the performance and longevity of your piping network.

The Full Stainless Steel Lug Butterfly Valve with Hand Lever offers unmatched corrosion resistance and reliable manual operation in aggressive, high-purity, and sanitary applications. Engineered entirely from stainless steel (typically SS316 or SS304), this valve is designed for durability and performance where other materials fail. Its key features include: