Select branch and language

Select language

Personal AI assistant

Do you have any questions? Start a conversation.

Internal sales

For all sales-related matters:

Tel: +49 (0) 7940 123 8509

Contact

Service helpline

For all after-sales matters:

Tel: +49 7940 123 450

Contact the helpline

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

16 Results
  • Produktbroschüre Für hohe chemische Anforderungen Baureihe 490 Edessa

    pdf, 606 KB, DE

  • 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

  • Data sheet GEMÜ 490, 491, 497, 498

    pdf, 2.26 MB, EN

  • Application brochure Fertilizer production

    pdf, 1.32 MB, EN

  • Руководство по эксплуатации GEMÜ 490

    pdf, 1.00 MB, RU

  • Användarhandbok GEMÜ 490, 491, 497, 498

    pdf, 948 KB, SV

  • Betriebsanleitung / Operating instructions GEMÜ 490

    pdf, 928 KB, DE, EN

  • Product certificate TA-Luft - GEMÜ 49X

    pdf, 1.97 MB, DE, EN

  • 操作说明 GEMÜ 490, 491, 497, 498

    pdf, 1.17 MB, ZH

  • техпа́спорт GEMÜ 490, 491, 497, 498

    pdf, 2.15 MB, RU