◆ PTFE lined butterfly valve(Teflon lined butterfly valve) is mainly in WCB body lining PTFE, F46, and other plastics, mainly used in chemical anti-corrosion, often used in corrosive liquids such as nitric acid and sulfuric acid.

Design Feature+

◆ Concentric design

◆ Non Pin stem

◆ Low torque

◆ Zero leakage

◆ Low torque

◆ Self cleaning

◆ Blowout-proof stem

◆ ISO 5211 top flange

Design Standard+

◆ Design: API 609

◆ Face to face: ISO5752-20 / ISO5752-13

◆ End connection: ASME B16.5 / ASME B16.47 /EN1092-2

◆ Test: API598

Technical Specification+

◆ Size: 2”~80”(DN50~DN2000)

◆ Class: 150Lb(PN10,PN16)

◆ Connection: Double flange / U-Type Flange / Wafer / Lug

◆ Operation: Manual / Worm Gear / Pneumatic actuator / Electric actuator

◆ Temperature: -20°C to +180°C

◆ Application: Sewage treatment / Desalination of sea water / Chemical / Corrosion media

Material Option+

◆ Body: WCB

◆ Disc: WCB / Stainless steel(CF8,CF8M,CF3,CF3M) /

◆ Duplex stainless steel(4A,5A,6A) /

◆ Hastelloy alloy(N-12MV,CW-12MW,CW-2M) /

◆ Inconel alloy(CY-40,CW-6MC) /

◆ Monel alloy(M35-1) /

◆ Aluminium bronze alloy(C95400,C95500,C95800,AB2C)

◆ Stem: SS420 / 17-4PH / F304 / F316 / K500

◆ Seat: F46 / PTFE

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Concentric PTFE Seat Butterfly Valve