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PTFE Coated Wafer Type Butterfly Valve for Chemical Applications - China Suppliers & Factory Direct Sales
Features
✔Bubble-tight shut-off at full pressure rating
✔The seat and the disc are the only two valve parts in contact with the medium.
✔Superior design for erosive media.
✔Large number of material combinations available.
✔Standardized actuator flange for easy operator interchangeability.
✔Top bushing absorbs side thrust loads.
✔Hub seal provided by preloaded contact between flatted seat surface and disc hub area for positive sealing at all disc positions.
✔Field replaceable seat isolates the body and stem from the flow.
✔Molded-in O-rings provides flange sealing and eliminates need for gaskets.
✔Universal Mounting Flange — The cast-in actuator flange is universally designed in accordance with ISO 5211 standard dimensions.
✔The mounting flange can accommodate all types of operators such as: 10-position handle kits, gear operators, electric actuators, and pneumatic actuators.
Materials Of Main Parts
| ITEM | PART NAME | MATERIAL |
| 1 | Body Material | WCB / Ductile Iron / CF8 / CF8M Etc. |
| 2 | Seat Material | PFA / PTFE |
| 3 | Stem Material | SS420 / SS410 / SS416 / SS316 / SS304 / Duplex Stainless Steel Etc. |
| 4 | Disc Material | WCB+PTFE / CF8+PTFE / CF8 / CF8M / CF3M / CF8+PFA / WCB+PFA Etc. |
| 5 | Hand Lever | Malleable Iron / Stamping Steel / Aluminum / Stainless Steel |
| 6 | Bushing | PTFE / Bronze |
| 7 | O Ring | NBR / EPDM / VITON |
Valve Standard
| Category | Details |
| Type | Wafer |
| Face to Face | API609, EN593, EN558-1 Series 20, DIN3202 K1, ISO5752 |
| Flange Drilling | EN1092 PN6 / PN10 / PN16 / JIS 5K / 10K / ANSI150 / AS Table D/E / SANS |
| Mounting Flange | ISO5211 |
| Pressure Rating | PN10 / PN16 / 150PSI / 200PSI / Class 150 |
| Application | HVAC, Water Supply & Sewage, Food & Beverage, Chemical / Petrochemical Processing, Power and Utilities, Paper and Pulp, Marine |
Dimensions (mm)
More Details
Frequently Asked Questions (FAQ)
QWhat is a PTFE-lined butterfly valve and what are its main advantages?
A PTFE-lined butterfly valve features a PTFE or PFA seat lining that provides excellent chemical resistance and bubble-tight shut-off. Its main advantages include superior performance with erosive and corrosive media, minimal parts in contact with the flow medium, and a wide range of material combinations to suit various industrial applications.
QWhat pressure ratings are available for this butterfly valve?
This butterfly valve is available in pressure ratings of PN10, PN16, 150PSI, 200PSI, and Class 150, making it suitable for a wide range of industrial pipeline systems.
QWhich international standards does this valve comply with?
This valve complies with multiple international standards including API609, EN593, EN558-1 Series 20, DIN3202 K1, ISO5752 for face-to-face dimensions, and EN1092 / ANSI150 / JIS 5K/10K / AS Table D/E for flange drilling. The actuator mounting flange conforms to ISO5211.
QWhat types of actuators are compatible with this butterfly valve?
The universal ISO5211 mounting flange is designed to accommodate all common actuator types, including 10-position handle kits, gear operators, electric actuators, and pneumatic actuators, allowing easy operator interchangeability in the field.
QWhat industries and applications is this valve suitable for?
This PTFE butterfly valve is widely used across HVAC systems, water supply and sewage treatment, food and beverage processing, chemical and petrochemical industries, power generation and utilities, paper and pulp plants, and marine applications.
QIs the seat of this butterfly valve field replaceable?
Yes. The seat is fully field replaceable and effectively isolates the valve body and stem from the flow medium. Molded-in O-rings provide reliable flange sealing and eliminate the need for separate gaskets, reducing maintenance time and costs.