GEMÜ 498 Edessa

The GEMÜ 498 Edessa PTFE-lined butterfly valve is motorized. Various metal or plastic on/off or control actuators are available. The disc and shaft are one piece; body and liner are available in different designs. The butterfly valve is available in nominal sizes DN 25 to 1200 (1½"–36"), in the standardized installation lengths: ISO 5752/20 | EN 558-1/20 | API 609 category A (DIN 3202 K1) available in wafer and lug body versions.

• Suitable for chemically corrosive media
• Bubble tight sealing, in accordance with EN 12266-1/P12, leak rate A
• High-quality selection of materials can be combined in different ways
• High level of plant reliability thanks to one-piece shaft and spring-washer-supported seal system
• Long service life thanks to shaft bearings and special disc and liner geometry
• Wide choice of motorized actuator types

• Media temperature :-20 to 200 °C
• Ambient temperature:-20 to 95 °C
• Operating pressure :0 to 10 bar
• Nominal sizes:DN 25 to 1200
• Body configurations:Lug | Wafer
• Connection standards:AS | ASME | DIN | EN | ISO | JIS
• Body materials:1.4404, block material | EN-GJS-400-18-LT, SG iron material | S355J2 + N, cast steel material | VE Duroplast, reinforced
• Body coating:Epoxy
• Liner materials:PTFE TFM™/EPDM | PTFE TFM™/FKM | PTFE TFM™/silicone | PTFE/EPDM | PTFE/FKM | PTFE/silicone
• Disc materials:1.4404 (316L), forged material | 1.4469, Duplex cast steel material | 2.4602 (alloy 22), block material | 3.7035, titan
• Disc coating:PFA
• Supply voltage:24 - 240 V AC/DC | 24 V AC, 50/60 Hz | 24 V DC
• Operating time 90°:4 to 100 s
• Protection class:IP 65, 66, 67, 68
• Conformities:ATEX | EAC | FDA | FMEDA | TA Luft (German Clean Air Act)