PTFE lined butterfly valves are used to shut-off, throttle and regulate highly corrosive gases, liquilds, slurries and powers providing a bubble tight shut-off.
These valves are designed to handle a variety of applications in the semi conductor, chemical, petrochemical, pulp and paper, mining, food and beverage, sugar refining, sewage, air pollution control, oil and gas and shipbuilding industries. Is therefore your best choice for controlling highly corrosive and abrasive fluids.
Without pin design: Double D transmission between disc and shaft is strong and reliable.
Stainless steel retainer preventing stem blow-out.
Hard back ring keeping the rubber from seat distortion.
Multi-standard alignment holes suitable for various standard of flanges.
Sizes / Pressure Classes
10 bar for DN50-DN600
Design Codes & Product Standards
Flange: EN1092 PN10, PN16. ASME B16.5 CLASS125, CLASS150
Face to face: EN558 Series 20, API609 Table 1
Body: Ductile iron, carbon steel, stainless steel
Disc: PTFE, SS304, SS316, SS316L, EN 1.4410, EN 1.4529
Seat: PTFE with EPDM backup, PTFE with VITON backup (depending on temperature)
Operation: Hand lever, gear box, pneumatic actuator, electric actuator, hydraulic actuator
Hand lever, gear box, pneumatic actuator, electric actuator