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Electromotive metal shut-off damper

GEMÜ 498 Edessa

ConfigureTechnical data sheet
Electrically operated butterfly valve with PTFE lining, stainless steel disc, and flange connection – ideal for the chemical, pharmaceutical, and food industries.

PTFE-sealing, centrally mounted butterfly valve

Product information

The GEMÜ 498 Edessa PTFE-sealing, centric butterfly valve is actuated by an electric motor. 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 Up to 1200 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.

Key features

  • 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
Electrically operated butterfly valve with PTFE lining, stainless steel disc, and flange connection – ideal for the chemical, pharmaceutical, and food industries.

Technical features

Parameters
Value
Media temperature
-20 to 200 °C
Ambient temperature
-20 to 95 °C
Operating pressure
0 to 10 bar
Nominal sizes
DN 25 to 1200
Housing 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
90° operating time
4 Up to 100 s
Protection class
IP 65, 66, 67, 68
Conformities
ATEX
EAC
FDA
FMEDA
TA Luft (German Clean Air Act)

Downloads

26 Results
  • Datenblatt GEMÜ 490, 491, 497, 498

    pdf, 2.26 MB, DE

  • Produktbroschüre Für hohe chemische Anforderungen Baureihe 490 Edessa

    pdf, 606 KB, DE

  • Product certificate RoHS - GEMÜ product collection

    pdf, 305 KB, DE/EN

  • Beiblatt / Supplement GEMÜ R488, 488, D488, 498, 428, 478, 728, 768, 748, B52, B54, B56, 9428, 723, 423 PE O4

    pdf, 90 KB, DE/EN

  • Käyttöohje GEMÜ 490, 491, 497, 498

    pdf, 973 KB, FI

  • Product brochure For aggressive chemical applications 490 Edessa series

    pdf, 606 KB, EN

  • Fiche technique GEMÜ 490, 491, 497, 498

    pdf, 2.11 MB, FR

  • Product certificate oil grease free - GEMÜ product collection K nr 0107

    pdf, 121 KB, DE/EN

  • Data sheet GEMÜ 490, 491, 497, 498

    pdf, 2.26 MB, EN

  • Application brochure Fertilizer production

    pdf, 1.32 MB, EN

  • Certificat du produit machinery - GEMÜ product collection

    pdf, 341 KB, FR

  • Руководство по эксплуатации GEMÜ 490

    pdf, 1.00 MB, RU

Suitable services

  • Expert knowledge for your applications

    Training

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  • Ensure longevity and reliability

    Maintenance

    Regular maintenance ensures consistently stable processes. Our service teams ensure the availability of your systems and reliably extend the service life of your components.

  • Fast, efficient, and precise

    Repair

    When it comes to repairs, every minute counts. Our experts analyze, repair, and test reliably - using original spare parts, technical precision, and a focus on minimizing downtime.

  • Intelligent networking with GEMÜ CONEXO

    Digital support

    CONEXO makes maintenance digital: RFID technology and mobile apps enable the unique identification of your components and document maintenance processes transparently.