Lined Butterfly Valve Ptfe Pfa Fep
- Place of Origin:
- Wenzhou,China
- Packing:
- Suitable Packing for Sea/Air Transport
- Connection:
- Flange
- Pressure:
- PN10,PN16,150LBS
- Temperature:
- PTFE:-29℃ ~180℃, PFA:-29℃~200℃, FEP:-29℃~150℃
- Gasket:
- PTFE, PFA, FEP,etc;
A lined butterfly valve provides flow isolation for corrosive process media with a fluoropolymer barrier between the fluid and metallic valve body. The electric actuated PFA configuration adds repeatable quarter-turn operation, while the flanged connection suits fixed piping systems. The specified pressure options are PN10, PN16 and 150 LBS, with PFA service from -29°C to 200°C.
Why the Fluoropolymer Layer Matters
The lining forms the wetted boundary, so material selection should match process chemistry, temperature and operating conditions. A ptfe lined butterfly valve can suit services where PTFE compatibility is preferred. PFA lined butterfly valves are suited to applications requiring a wider temperature range, while a fep lined butterfly valve can be considered when FEP matches the process conditions. Actual medium compatibility should always be checked against the operating envelope.
| Selection factor | Engineering significance | Check before ordering |
|---|---|---|
| Lining material | Determines chemical and temperature compatibility | Medium, concentration, temperature |
| Flange interface | Determines piping fit and assembly method | Flange standard, pressure class, bolt pattern |
| Electric actuator | Provides repeatable quarter-turn movement | Torque, fail position, duty cycle |
| Disc and seat sealing | Influences shutoff integrity and operating torque | Leakage requirement, cycling frequency |
| Flow direction | Supports the required isolation strategy | Pressure direction and operating mode |
Where Electric PFA Lining Fits
The flanged valve configuration is suitable for gaseous and liquid service. Typical industries identified for this valve type include chemical and petrochemical processing, food and beverage, pulp and paper, water and brewing. Bidirectional flow capability also suits piping systems where operating direction may vary.
For automated service, actuator sizing should consider more than nominal valve size. Differential pressure, disc torque, seat friction and cycling frequency all influence actuator selection. Pairing the pressure class and temperature range with the required operating torque creates a more reliable specification.
A Practical Selection Path
Selection starts with medium, concentration, temperature, pressure and flow direction. The lining is then matched to chemical exposure, followed by flange dimensions and electric actuator requirements. Pressure-test records, material identification, inspection documents and installation drawings add useful purchasing evidence.
A strong lined butterfly valve specification connects material compatibility, operating limits and automation requirements in one clear process, making technical comparison and quotation decisions more consistent.
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