Butterfly Valves

Lined Wafer Butterfly Valve with Worm Gear Operator

 

Lined Wafer Butterfly Valve with Worm Gear Operator

 

 

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Lined Wafer Butterfly Valve with Worm Gear Operator:
This lined wafer butterfly valve with worm gear drive is a centerline type designed for corrosive fluid pipelines. The ductile iron body is internally lined with fluoroplastic (PTFE/FEP/PFA), creating a full isolation layer between the medium and the valve body to prevent corrosion. The worm gear handwheel provides low-torque operation for reliable manual control. The wafer connection allows compact installation between two flanges, making it ideal for chemical processing plants, pharmaceutical production lines, wastewater treatment and other corrosive medium applications. It is available in PN10/PN16 pressure grades and DN50 to DN300 sizes, with different lining materials to match different corrosive media and temperature requirements.

Key Technical Specifications

ItemSpecification
TypeLined Wafer Butterfly Valve
ActuatorWorm Gear Handwheel
Nominal PressurePN10 / PN16 MPa
Working TemperaturePTFE/FEP lining: -40℃ ~ 180℃
Applicable MediumCorrosive liquids, acids, alkalis, salts, organic solvents
Connection TypeWafer
Lining MaterialPTFE / FEP / PFA
Body MaterialDuctile Iron
Size RangeDN50 ~ DN300

Main Component Materials 

Valve Body: Ductile Iron
Butterfly Disc: Stainless Steel (304/316)
Valve Stem: Stainless Steel
Lining & Seat: PTFE / FEP / PFA
Product Features
1. Full Lined Corrosion Protection: Fluoroplastic lining completely isolates corrosive media from the valve body.
2. Low Torque Worm Gear Operation: Smooth and easy opening/closing with worm gear handwheel.
3. Compact Wafer Installation: Saves installation space and reduces project cost.
4. Multiple Lining Options: Different lining materials available to suit various corrosive conditions.
5. Reliable Sealing: Soft-seated design ensures zero leakage under rated working conditions.
Application Industries 
1. Full Lined Corrosion Protection: Fluoroplastic lining completely isolates corrosive media from the valve body.
2. Low Torque Worm Gear Operation: Smooth and easy opening/closing with worm gear handwheel.
3. Compact Wafer Installation: Saves installation space and reduces project cost.
4. Multiple Lining Options: Different lining materials available to suit various corrosive conditions. 5. Reliable Sealing: Soft-seated design ensures zero leakage under rated working conditions.