The VIANS VI-S203 is a concealed hydraulic door closer designed for fire doors and commercial applications. Installed within the door leaf and frame, it provides controlled and smooth door closing while maintaining a clean appearance and reducing vandalism risk.

Product Parameters

Product Details

• Tested for up to 1,000,000 operating cycles
• Hydraulic oil resistant to low temperatures down to -55°C
• Rocker arm made from high-quality carbon steel
• Double-painted surface with anti-corrosion treatment (96-hour corrosion resistance)
• Optional positioning function
• Optional back-check function
• Precision sealing design to prevent oil leakage
• High-quality die-cast aluminum alloy body with dual-layer protective paint
• Two hydraulic valves controlling two-stage automatic door closing
• Can be installed on the door leaf or door frame