This hand lever wafer butterfly valve features a replaceable soft EPDM seat, allowing field maintenance without pipeline removal. Available 2" to 12" (DN50-DN300) with ductile iron body and CF8 disc. optional gear, electric, or pneumatic actuators. Seat materials (EPDM, NBR, Viton, PTFE) and disc materials fully customizable. Suitable for water, HVAC, mild chemicals, and oil services. ISO 9001 certified OEM manufacturer.

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.

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.

As an ISO 9001-certified manufacturer and supplier, we specialize in providing reliable fluid control solutions. Our PTFE Lined Valves are manufactured with precision and can be customized (OEM/ODM) to meet specific pressure, temperature, and connection standards, ensuring perfect compatibility with your system.

​The Wafer Type Soft Rubber Lined Butterfly Valve provides an economical and efficient solution for water treatment, irrigation systems, and general industrial services where reliable bubble-tight sealing and minimal maintenance are essential. This valve features a resilient rubber-lined design that ensures excellent sealing performance while maintaining a compact and lightweight profile for easy installation between pipeline flanges.

Are all butterfly valves the same? Not quite. Lug butterfly valves differ in installation, pressure handling, and maintenance. In this article, you will learn the key differences between lugged and non-lugged valves, helping you choose the right valve for your system.

Tianjin Worlds Valve Co., Ltd. introduces the Soft Seal EPDM Covered SS 2507 Disc Butterfly Valves with Wafer Type Design, specifically developed to handle the most challenging corrosive and abrasive media in seawater desalination, chemical processing, and offshore applications.