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Die GEMÜ 491 PTFE seal butterfly valve has a metal actuator and is pneumatically operated. The disc and shaft are one piece; the body and liner are available in different designs. The butterfly valve is available in nominal sizes DN 40–900 (1½"–36") and in wafer and lug body versions.
Features
- Suitable for isolating and control functions with gaseous and liquid media
- Seal material 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 specifications
- Connection: Flange
- Actuator: Pneumatic
- Seal material
- Body material: ; 1.4301, stainless steel; EN-GJS-400-18-LT; S355J2G3 steel
- Conformities: EAC; 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
