Flowrates - Model PTFE -Lined Butterfly Valve

• 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

Body Types and Available Configurations

Wafer DN50-300 (Can be made from DN350 to DN1200 with lug body and unthreaded holes.)

Lug : DN25-1200

• 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

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.