The VIANS VI-S505 is a concealed hydraulic door closer designed for heavy doors in commercial and public buildings. Installed inside the door leaf and frame, it offers controlled door closing, improved aesthetics, and reduced risk of vandalism.

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