Automatic Hydraulic Door Closer Aluminium Alloy Adjustable Spring 15-45kg Doors Commercial

This hydraulic door closer is crafted from die-cast aluminum alloy, offering excellent sealing, hydraulic operation, and fully automatic closure from 0° to 90°. It’s stable, abrasion-resistant, weather-resistant, and designed to prevent oil leakage, ensuring quiet, automatic door closing and a long service life. Equipped with two valves that independently control closing and locking speed, the closer allows sectional adjustment of swing and locking speeds, enhancing safety by preventing hand pinching for greater peace of mind. Suitable for various door types—including fire doors, security doors, metal doors, wooden doors, and both left/right-opening doors—it can be installed inside or outside. It features 90° positioning, keeping the door open at any angle between 90° and 180°; simply pull the door within 90° for automatic closing, no external force or door stop needed. A detailed installation manual is included, so be sure to read it carefully and measure distances before installation to avoid improper mounting holes.