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PTFE/Teflon Seat Lug Butterfly Valve for Waterworks - Reliable China Suppliers & Factory, Sizes DN50-DN600
Features
- ✔ Two Piece Split Body is standard Ductile Iron with available Carbon Steel and Stainless Steel
- ✔ Solid Teflon boot seat with a Silicone Seat energizer
- ✔ Solid Teflon encapsulated Disc has a minimum 1/8" (3MM) of pure virgin PTFE over a Stainless Steel core
- ✔ Belleville springs top and bottom of seat assures constantly energized stem seal aligned with PTFE bearings
- ✔ True ISO-5211 mounting Pad AND stem
- ✔ Operators include Top Trigger, Bottom Trigger 10 position or flip the notch plate over for infinite position. Iron Gears and Stainless-Steel gears, Aluminum or Stainless Steel Pneumatic Actuators, Aluminum or 316 Stainless Steel Electric actuators — all handles are lockable and gears are lockable with locking attachment.
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 PN10 / PN16 / JIS / ANSI150 / AS Table D/E |
| 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)
Q
What body materials are available for this butterfly valve?
The valve body is available in standard Ductile Iron, as well as Carbon Steel (WCB), CF8 (Stainless Steel 304), and CF8M (Stainless Steel 316). The two-piece split body design ensures easy maintenance and reliable sealing performance.
Q
What is the PTFE encapsulated disc and why is it important?
The solid Teflon (PTFE) encapsulated disc features a minimum 1/8" (3mm) of pure virgin PTFE over a Stainless Steel core. This design provides excellent chemical resistance, tight shutoff, and long service life even in corrosive media applications.
Q
Which international standards does this valve comply with?
This butterfly valve complies with multiple international standards including API609, EN593, EN558-1 Series 20, DIN3202 K1, and ISO5752 for face-to-face dimensions. Flange drilling meets EN1092 PN10/PN16, JIS, ANSI150, and AS Table D/E. The mounting flange conforms to ISO5211.
Q
What actuator and operator options are available?
A wide range of operators are available: Top Trigger handle, Bottom Trigger handle (10-position or infinite position by flipping the notch plate), Iron or Stainless Steel gear operators, Aluminum or Stainless Steel Pneumatic Actuators, and Aluminum or 316 Stainless Steel Electric Actuators. All handles and gear operators support locking with a locking attachment.
Q
What are the pressure ratings for this valve?
The valve is rated for PN10, PN16, 150PSI, 200PSI, and ANSI Class 150 pressure classes, making it suitable for a wide range of industrial and commercial piping systems.
Q
What industries and applications is this PTFE butterfly valve suitable for?
This valve is widely used across many industries including HVAC systems, Water Supply & Sewage treatment, Food & Beverage processing, Chemical and Petrochemical processing, Power and Utilities, Paper and Pulp manufacturing, and Marine applications. Its corrosion-resistant PTFE lining makes it ideal for handling aggressive or hygienic media.