Lug Type PTFE Seat & Disc Butterfly Valves with Worm Gear

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 product describes a lug butterfly valve featuring a CF8M (AISI 316) stainless steel body and disc, operated by a manual hand lever. The lug design allows dead-end-service – the valve can be installed at pipeline ends without a downstream flange. Available with replaceable seats (EPDM, NBR, FKM, PTFE) for various media. Sizes DN50-DN2000 with customizable pressure ratings (PN10, PN16, Class 150) and flange standards (EN 1092, ANSI B16.5, etc.). Suitable for seawater, chemical processing, high‑purity water, and corrosive industrial applications. Fully customizable as an OEM product from Tianjin Worlds Valve Co., Ltd.

This article explores the rise of Tianjin as a premier destination for industrial valve manufacturing in 2026. It highlights the city’s strategic location within northern China’s supply chain, the logistics advantage of Tianjin Port, and recent multinational expansions by Honeywell and Emerson. The piece also profiles domestic leaders like Tianjin Galaxy Valve and fast‑growing OEM specialist Tianjin Worlds Valve Co., Ltd., which offers fully customizable butterfly valves, gate valves, check valves, and strainers with certifications including ISO 9001 , CE, UKCA, WRAS, and ACS. Government policies supporting advanced manufacturing and the region’s complete ecosystem from casting to finished products are also discussed. For international buyers, Tianjin combines cost competitiveness, strict quality testing, and logistical efficiency—making it a compelling sourcing alternative to southern Chinese manufacturing hubs.