The GEMÜ 490 PTFE seal butterfly valve has a bare shaft. 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.

• 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