PTFE Lined Butterfly Valves are a type of butterfly valve made of polytetrafluoroethylene (PTFE). PTFE is a synthetic material commonly used in various applications, including plumbing, food and beverage, packaging, and medical devices. PTFE is also used in the production of medical devices, such as stents and heart valves.
In medical devices, PTFE is often used as a lined valve. A lined valve is a type of butterfly valve with a layer of PTFE coated with a thin silicone film. The thin film of silicone acts as a seal to keep air and liquid out of the valve and prevents air from leaking into the valve. Lined butterfly valves are commonly used in medical devices to prevent air from leaking into the valve and causing tissue damage. When used in medical devices, lined butterfly valves are often used to line blood vessels.
This way, lined butterfly valves can prevent blood from leaking into the vessel. Lined butterfly valves are also commonly used in food packaging to prevent air from leaking into the packaging and causing spoilage. In this way, lined butterfly valves prevent air from leaking into the packaging and causing spoilage.
PTFE Lined Butterfly Valve Specification
| Size Range | : | 40 mm to 400 mm |
| Design | : | Split Body – Wafer Type |
| End Connection | : | Wafer Type to sandwich between two flanges as perANSI B16.5 / DIN PN 10 / DIN PN 16 |
| Design Standard | : | BS EN 593:2004 (Formerly BS 5155) |
| Testing Standard | : | BS EN 12266-1&2 (2003) |
| Face to Face | : | API 609 / DIN 3202 K1 / BS 5155 / ISO 5752 / BS EN 558-1/2 |
| Lining Thickness | : | 3mm to 5mm |
| Body / Disc M.O.C. | : | Ductile Iron GGG40.3 / ASTM A395, Cast Steel ASTM A216 Gr. WCB, ASTM A351 Gr. CF8 (S.S.304), ASTM A351 Gr. CF8M (S.S.316) |
| Lining Material Options | : | PTFE – ASTM D 4895, PFA – ASTM D 3307, FEP – ASTM D 2116 |
| Test and Inspection | : | Hydraulic Test : Body (Shell) – 20 Kg/Cm, Seat – 11 Kg/Cm |
| Spark Test | : | 15 K.V.D.C. |
| Operation | : | Gear Box, Pneumatic Actuator, Electro-Pneumatic Valve Positioner, Electrical Actuator, Solenoid Valve, Limit Switch, Air Filter Regulator |
| Pneumatic Test | : | Seat – 6 Kg/Cm |
Salient Features
- Integral Actuator Mounting Flange
- Enhanced Resilient 360 degrees Elastomeric Energizer
- ‘Maintenance Free’ High Performance Design
- Dynamically Loaded Mechanical Shaft Seal
- Chambered PFA Raised Face Flange Sealing
- Dynamic Live Loaded Seal Design give super safe operation.
- Precision Spherically Molded & Machined One Piece Disc/Stem
- Minimum 3mm Thick PFA Liner
- Bubble Tight Closer provides process efficiency
- ISO 5211 Mounting Flange
- High Strength A193 B7 Fasteners
- Radially Loaded Atmospheric Seal
- Blowout Proof Stem
Applications
- Highly Corrosive
- Toxic Media
- Acids
- Ultra Pure Water
