Media Air
Chemicals / process liquids
Food / drink
Process gases
Steam
Wastewater / effluent
Water
Valve type Butterfly valves
Construction Stainless steel
Steel
Thermoplastics
Max. pressure (bar) 10
Min. temperature (deg. C) -20
Max. temperature (deg. C) 200
Min. connection size (mm) 40
Max. connection size (mm) 900
 
 
 

GEMÜ 498 is a motorised butterfly valve designed for use with chemicals, corrosive media and high purity water. Various metal or plastic actuators are available in open/closed or control versions. The disc and shaft are one piece. The body is available in stainless steel, ductile iron or steel The body liner is PFA or PTFE. The butterfly valve is available in nominal sizes DN 40–900 (1½"–36") and in wafer and lug body versions.

Key features

  • Suitable for isolating and control functions with gaseous and liquid media
  • Seal material PFA or TFM™ (FDA 21CRF 177.1550)
  • Installation length acc. to ISO 5752/20, EN 558-1/20, JIS 10K
  • ATEX version available as an option
  • TA-Luft compliant
  • Extensive applications using a variety of materials

Technical data

Connection: Flange

Actuator: Motorised

Seal material: PFA or PTFE

Body material: 1.4301, stainless steel; EN-GJS-400-18-LT, ductile iron; S355J2G3 steel

Conformities: FDA; TA Luft (German Clean Air Act)

Max. operating pressure: 10 bar

Max. media temperature: 200 ° C

Min. media temperature: -20 ° C

Nominal sizes

DN 40 (1 1/2'')
DN 50 (2'')
DN 65 (2 1/2'')
DN 80 (3'')
DN 100 (4'')
DN 125 (5'')
DN 150 (6'')
DN 200
DN 250
DN 300
DN 350
DN 400
DN 450
DN 500
DN 600
DN 700
DN 900
DN 1000


GEMÜ 498 is a motorised butterfly valve designed for use with chemicals, corrosive media and high purity water. Various metal or plastic actuators are available in open/closed or control versions. The disc and shaft are one piece. The body is available in stainless steel, ductile iron or steel The body liner is PFA or PTFE. The butterfly valve is available in nominal sizes DN 40–900 (1½"–36") and in wafer and lug body versions.

Key features

  • Suitable for isolating and control functions with gaseous and liquid media
  • Seal material PFA or TFM™ (FDA 21CRF 177.1550)
  • Installation length acc. to ISO 5752/20, EN 558-1/20, JIS 10K
  • ATEX version available as an option
  • TA-Luft compliant
  • Extensive applications using a variety of materials

Technical data

Connection: Flange

Actuator: Motorised

Seal material: PFA or PTFE

Body material: 1.4301, stainless steel; EN-GJS-400-18-LT, ductile iron; S355J2G3 steel

Conformities: FDA; TA Luft (German Clean Air Act)

Max. operating pressure: 10 bar

Max. media temperature: 200 ° C

Min. media temperature: -20 ° C

Nominal sizes

DN 40 (1 1/2'')
DN 50 (2'')
DN 65 (2 1/2'')
DN 80 (3'')
DN 100 (4'')
DN 125 (5'')
DN 150 (6'')
DN 200
DN 250
DN 300
DN 350
DN 400
DN 450
DN 500
DN 600
DN 700
DN 900
DN 1000


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Gemü Valves Ltd
10 Olympic Way
Birchwood
Warrington
WA2 0YL
Tel: 01925 824044
Fax: 01925 828002
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GEMÜ 498 - PFA lined butterfly valve, motorised actuator