Gear Operated PTFE Lined Butterfly Valve Gearbox Driven Corrosion‑Resistant Lined Butterfly Valve
- Gear Operated PTFE Lined Butterfly Valve adopts worm‑gear gearbox driving structure together with complete PTFE lining, specially built for large‑size corrosive medium pipeline.
‑ Worm‑gear gearbox operation, reduce operating torque for large‑bore valve
‑ Handwheel gear drive, stable switching action, position locking function
‑ Full PTFE lining for valve body and disc, resist acid, alkali and solvent corrosion
‑ Bubble‑tight soft sealing performance, zero‑leak shut‑off
‑ Robust carbon steel valve body for overall structural stability
‑ Available in wafer, lug and flanged connection ends
‑ Simple manual operation without power supply requirement
‑ Convenient installation, adjustment and on‑site maintenance
‑ Suitable for large diameter working conditions where direct handle cannot operate
‑ Strict hydrostatic shell and sealing test before shipment
‑ Support OEM, ODM for special medium and size customization
‑ Complete inspection reports and technical documentation supplied
‑ Factory direct supply for chemical, pharmacy and environmental protection orders
Mainly applied in chemical plant, pharmaceutical industry, waste water treatment, pickling workshop and environmental protection engineering pipeline. Used for cut‑off and throttling regulation of acid, alkali, salt solution and various strong corrosive fluid, especially for large‑caliber piping system.
Gear Operated PTFE Lined Butterfly Valve transfers torque through worm‑gear gearbox to drive butterfly disc rotate 90 degrees. Gearbox reduces operating force and can lock valve position. When disc parallels pipeline direction, medium flows through; rotate 90 degrees, disc presses PTFE lining seat to block flow channel and realize tight shut‑off. PTFE lining isolates corrosive medium from metal valve body to prevent chemical erosion.
Product Type: Gear Operated PTFE Lined Butterfly Valve
Standard: ASME B16.5
Pressure Class: Class150
Size Range: DN50‑DN1000
Connection: Wafer, Lug, Flanged
Body Material: Carbon Steel
Lining Material: PTFE
Operation: Worm‑gear Gear Operated (Handwheel)
Applicable Medium: Acid, Alkali, Salt solution, Strong corrosive chemical fluid
Working Temperature: ‑20℃ ~ +180℃
Each gear operated PTFE lined butterfly valve passes pressure and sealing inspection, packed in heavy‑duty plywood export cases. Custom marking and project‑required documents are supported for overseas bulk orders.
Port Size: DN50~DN1000
Pressure Rating: PN10~PN16
Design Standards: API 609, ASME B16.34, API 598, ISO 5208
Body Material: GGG40, optional ductile iron
Disc Material: 2507 duplex steel, optional 2205 duplex
Lining/Seat: PTFE, optional PFA
End Connections: Wafer Type
Structure: Midline, soft-seal, manual/pneumatic/electric
Temp Range: -20℃~120℃ (PTFE), -20℃~200℃ (PFA)
Leakage Class: ANSI/FCI Class VI
Test Standard: 1.5×rated (shell), 1.1×rated (seat)
Media: Corrosive fluid, acid, base, solvent
Certifications: ISO 9001, CE, FDA (optional)
Drive Options: Manual/lever, pneumatic, electric