GEMÜ R477

The GEMÜ R477 Tugela double eccentric manual metal butterfly valve provides secure flow isolation for high performance industrial fluid applications. The GEMÜ R477 accommodates nominal sizes from DN 50 to DN 600, regulates operating pressures up to 40 bar, and withstands media temperatures ranging from -40°C to 230°C. Key Performance Capabilities: Friction Optimised Actuation: The GEMÜ R477 integrates a double eccentric construction to separate the disc directly from the seat, reducing mechanical friction to extend component service life and prevent unplanned maintenance downtime. Active Leakage Prevention: The GEMÜ R477 features a continuous shaft with a temperature resistant graphite bearing and PTFE gland packing, allowing readjustment during operation to minimise leakage and ensure continuous pipeline flow. Manual Actuation Control: The GEMÜ R477 integrates an aluminium hand lever or gearbox hand wheel operator, delivering secure mechanical flow regulation to eliminate process downtime during manual pipeline interventions. Guaranteed Flow Isolation: The GEMÜ R477 achieves EN 12266-1/P12 leak rate A bubble-tight sealing, preventing costly fluid loss and eliminating system failures across demanding fluid handling networks. Safety & Compliance: Explosive Environment Security: The GEMÜ R477 features an antistatic fixture to secure ATEX compliance, preventing ignition risks to guarantee facility safety within volatile industrial zones. Emissions & Food Grade Compliance: The GEMÜ R477 achieves TA Luft and FDA conformities, ensuring plant engineers standardise one double-eccentric manual valve across strict emission controlled environments and sanitary processing lines. Note: The permissible maximum operating pressure depends strictly on the specific working medium temperature applied to the GEMÜ R477 configuration.