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Manual metal butterfly valve

GEMÜ 497 Edessa

ConfigureTechnical data sheet
Manual shut-off valve with PTFE lining, stainless steel lever, 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 PTFE-sealing, centric GEMÜ 497 Edessa butterfly valve is manually operated. It has a metal hand lever or gearbox depending on customer requirements. 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 acc. to EN 12266-1/P12, leakage 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
  • Lockable hand lever
  • Optional stainless steel hand lever
Manual shut-off valve with PTFE lining, stainless steel lever, and flange connection – ideal for the chemical, pharmaceutical, and food industries with high corrosion resistance requirements.

Technical details

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 (GGG 40.3)
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
EAC
FDA
FMEDA
Functional safety
TA Luft (German Clean Air Act)

Downloads

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

    pdf (2 MB) -
    DE

  • bs_a_IND_03_sludge-drying-and-vapour-condensation_en

    pdf (634 KB) -
    EN

  • Product certificate RoHS - GEMÜ product collection

    pdf (450 KB) -
    DE/EN

  • Produktbroschüre Für hohe chemische Anforderungen Baureihe 490 Edessa

    pdf (606 KB) -
    DE

  • 02_Data_2021_01
    ValveSizer
    Version: 01.2021
    Interface: -
    Date: 2020-12-31T23:00:00Z

    zip (1 MB)

  • 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 MB) -
    FR

  • z_Data_2019_02
    ValveSizer
    Version: 02.2019
    Interface: -
    Date: 2019-01-31T23:00:00Z

    zip (1 MB)

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

    pdf (121 KB) -
    DE/EN

  • bs_a_IND_03_klaerschlammtrockung-und-bruedenkondensation_de

    pdf (606 KB) -
    DE

  • 01_setup_ValveSizer

    zip (47 MB)

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