PTFE Lined Butterfly Valves
The world’s leading modular PTFE-lined butterfly valve, built to the highest quality standards for safe handling of aggressive media.
- Safe handling of corrosive media thanks to a unique sealing system
- A regulating pressure package guarantees the specified contact pressure and maximum tightness over the entire lifetime of the equipment
- Specially designed for use with aggressive media such as chlorine gas, hydrofluoric acid and sulfuric acid
- Above-average overall performance thanks to a technically proven but constantly improved sealing system
Design Advantages of Flowrates PTFE Butterfly Valves
- Reduced friction and increased service life thanks to spherical design elements
- Rounded and polished sealing surfaces of the disc reduce the torque and allow the use of smaller and cheaper actuators
- The one-piece valve disc, precisely dimensioned to within tenths of a millimeter, always remains securely anchored in the valve
- Injection molded elastomer inserts with a complex design ensure maximum tightness over an increased service life
Body Types and Available Configurations
Wafer DN50-300 (Can be made from DN350 to DN1200 with lug body and unthreaded holes.)
Lug : DN25-1200
Industrial Applications of PTFE Coated Valves
Butterly valve lined with PTFE/PFA or mod. PTFE/PFA for high chemical demands. To shut off and control corrosive and abrasive liquids or gases.
face to face :ISO 5752, Basic Range 20 EN 558-1, Basic Range 20
HEAD FLANGE : According to EN ISO 5211
MAX. OPERATING PRESSURE :
DN25-450: 10 bar
DN500-600: 6 bar
DN700-1200: 3 bar
CONNECTION STANDARDS :
PN10-16 (DN25-150)
PN10 (DN200- 600)
PN6 (DN700-1050)
ANSI CL150
TEMPERATURE RANGE :
-60 °C up to +200 °C (see Catalogue, p.9: Pressure / Temperature diagram)
IN-SHOP TESTING
- Porosity Test of Disc Coating (PFA) and Liner (PTFE / mod.PTFE) acc. to EN 60243-1
- Leakage Test acc. to EN 12266-1/P12
- Leakage Rate A
- Check of Torque
Quality Certifications and Compliance
- TA-Luft: Compliance Leakage Certificate according to Position 5.2.6.4. of the Technical Instruction Air (TA-Luft), VDI 2440.
- Compliance of the Safety Requirements of the European Pressure Equipment Directive 2014/68/EU.
- Atex 2014/34/EU compliant Version for explosive surroundings Group II, Zones 0, 1, 2 (and 20, 21, 22 respectively).
- Food: Food (EC) 1935/2004; FDA.
