GEMU 498 Edessa Motorized butterfly valve | GEMU Valves Importer and Supplier
2 min readNov 29, 2022
The GEMÜ 498 Edessa PTFE lined butterfly valve is motorized. Various metal or plastic on/off or control actuators are available. 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 250 and in standard installation lengths ISO 5752/20 | EN 558–1/20 | API 609 category A (DIN 3202 K1) in wafer and lug body versions.
Features
- Suitable for chemically corrosive media
- 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
Technical specifications
- Media temperature :-20 to 200 °C
- Ambient temperature:-20 to 95 °C
- Operating pressure :0 to 10 bar
- Nominal sizes:DN 25 to 250
- 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 / silicone | PTFE TFM™/EPDM | PTFE TFM™/FKM | PTFE TFM™/silicone | PTFE/EPDM | PTFE/FKM
- 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 | SIL | TA Luft (German Clean Air Act) | USP
