Description

All floor springs have passed many opening and closing tests, meeting safe application standards. Bult-in pressure relief valve to protect the unit against any abuse from strong pressure or strong wind when closing the door Filled with high quality anti-icing hydraulic oil, ensuring smooth and flexible operation of mechanical parts at different temperatures. Door openning angel at **6°at your option *0°Stop device or non-stop device at your option. With single closing speed adjusting valves at **6°~0°to match different closing purposes . General designed is suitalbe for opening doors with left/right hand and single/double opening, accessories are available for each means. Adjustable axis is designed to install and adjust easily&precisely.