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Butterfly valve with free shaft end made of metal

GEMÜ 490 Edessa

ConfigureTechnical data sheet
Butterfly valve with PTFE lining and flange connection – ideal for the chemical, pharmaceutical, and food industries with high corrosion resistance requirements.

PTFE-sealing, centrally mounted butterfly valve

Product information

The GEMÜ 490 Edessa PTFE-seated, centric butterfly valve has a free shaft end. Disc and shaft are one piece, body and liner are available in different designs. The butterfly valve is available in the nominal sizes (1″ - 48″), in the standardised installation lengths: ISO 5752/20 | EN 558-1/20 | API 609 category A (DIN 3202 K1) in the wafer and lug body variants.

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
Butterfly valve with PTFE lining and flange connection – ideal for the chemical, pharmaceutical, and food industries with high corrosion resistance requirements.

Technical features

Parameters
Value
Media temperature
-20 to 200 °C
Ambient temperature
-20 Up to 95 °C
Operating pressure
0 Up 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/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
Conformities
ATEX
EAC
FDA
FMEDA
TA Luft (German Clean Air Act)

Downloads

22 Results
  • Product certificate FDA - GEMÜ 49X PFA Code P

    pdf, 64 KB, DE, EN

  • Declaration of Conformity pressure - GEMÜ 49X PTFE

    pdf, 125 KB, EN

  • Produktbroschüre Für hohe chemische Anforderungen Baureihe 490 Edessa

    pdf, 606 KB, DE

  • Betriebsanleitung / Driftsvejledning GEMÜ 490 da

    pdf, 1.34 MB, 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

  • Konformitätserklärung pressure - GEMÜ 49X PTFE

    pdf, 125 KB, DE

  • Data sheet GEMÜ 490, 491, 497, 498

    pdf, 2.26 MB, EN

  • Instruções de operação GEMÜ 490 ptb

    pdf, 942 KB, PT

  • Application brochure Fertilizer production

    pdf, 1.32 MB, EN

  • Руководство по эксплуатации GEMÜ 490

    pdf, 1.00 MB, RU