VIANS VI-S505 100KG Concealed Door Closer – Hydraulic Fire Door Closer with Hold-Open, Adjustable Speed, EN3-4

 Description

The VIANS VI-S505 Concealed Hydraulic Door Closer is a heavy-duty door closing solution designed for commercial buildings, offices, and public facilities. Featuring a durable aluminum alloy body, adjustable hydraulic closing speed, and EN3–4 spring power, it provides smooth and controlled door operation. Suitable for doors weighing 40–100kg and widths of 850–1250mm, it supports opening angles up to 180 degrees. With a concealed installation design, corrosion-resistant finish, and durability tested for up to 1,000,000 cycles, it delivers reliable performance and a clean, professional appearance.

Key Features

• Concealed Hydraulic Design: Installs within the door or frame for a clean appearance and reduced exposure to damage.
• Heavy-Duty Door Support: Suitable for doors weighing between 40kg and 100kg.
• Wide Door Compatibility: Supports door widths ranging from 850mm to 1250mm.
• Adjustable Closing Speed: Allows hydraulic closing speed adjustment for smooth and controlled door movement.
• Two-Stage Closing System: Equipped with two hydraulic valves for controlling different stages of automatic door closing.
• 180-Degree Opening Angle: Supports a maximum door opening angle of 180 degrees.
• EN3–4 Spring Power: Provides suitable closing force for compatible medium and heavy doors.
• Hold-Open Function: Supports holding the door open at a selected position for added convenience.
• Optional Back-Check Function: Available with back-check functionality to help control door movement during opening.
• High Durability: Tested for up to 1,000,000 opening and closing cycles for long-term reliability.
• Durable Aluminum Alloy Body: Manufactured from high-quality die-cast aluminum alloy for strength and durability.
• Strong Carbon Steel Rocker Arm: Features a high-quality carbon steel arm for reliable mechanical operation.
• Corrosion-Resistant Finish: Double-painted surface with protective anti-corrosion treatment tested for 96 hours.
• Precision Sealing Design: Engineered to help prevent hydraulic oil leakage and maintain consistent performance.
• Low-Temperature Hydraulic Oil: Uses hydraulic oil designed to resist temperatures as low as -55°C.
• Wide Operating Temperature: Suitable for operating temperatures ranging from -20°C to +55°C.
• Left and Right Door Compatibility: Suitable for both left-opening and right-opening doors.
• Flexible Installation: Can be installed in compatible door leaf or door frame configurations.
• Compact Mechanism: Main unit dimensions of 238 × 60 × 40mm with a fixing plate size of 188 × 19mm.
• Multiple Color Options: Available in Silver, Black, Milky, and Golden finishes.
• Professional Door Hardware: Ideal for offices, commercial buildings, public facilities, and other high-traffic door installations.