Lug butterfly valve with ductile iron body, CF8M disc, and field-replaceable soft EPDM seat. Dead-end service capable. Sizes DN50‑DN600, PN10/PN16/Class 150. Easy maintenance, corrosion resistant. OEM customizable. ISO 9001 certified.

This lug butterfly valve features a CF8 stainless steel body and polished disc, PTFE seat, and pin-secured stem. The polished disc reduces torque and prevents media buildup. PTFE seat provides chemical resistance and bubble-tight shut-off. Lug body allows dead-end service. Size range DN50-DN1200, pressure PN10/PN16/Class 150. Ideal for chemical, food, and high-purity applications. OEM customizable, ISO 9001 certified. Manufactured by Tianjin Worlds Valve Co., Ltd.

This comprehensive guide explains how to select a wafer butterfly valve based on pipeline size, flow rate, pressure rating, temperature, and media compatibility. It covers key features (compact design, 90° operation, low pressure drop), material selection for body/disc (ductile iron, stainless steel, aluminum bronze, duplex) and seat (EPDM, NBR, Viton, PTFE), plus installation best practices and maintenance tips. The article highlights Tianjin Worlds Valve Co., Ltd. as a reliable OEM/ODM manufacturer offering full customization, international certifications (ISO 9001, CE, UKCA, WRAS, ACS), and factory‑direct support for water, chemical, HVAC, marine, and industrial applications.

This DN300 double eccentric flanged butterfly valve features a ductile iron body and disc with an electric actuator for automated on/off control. The double offset design reduces wear and operating torque, extending seat life. Ideal for water, wastewater, and industrial applications. Fully customizable. ISO 9001 certified OEM manufacturer.

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 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.