Speed Ajustable Double Action Door Closing Springs Yg-205A

Speed Ajustable double action door closing springs YG-205A
1. Filled with high quality anti-icing hydraulic oil, ensuring smooth and flexible operation of mechanical parts at different temperatures.
2. Door openning angel at 130°
3.90° /130° Stop device or non-stop device at your option.
4. With double closing speed adjusting valves at 130° ~0° To match different closing purposes.
5. General designed is suitable for openning doors with left/right hand and single/double opening, accessories are available for each means.
6. Adjustable and unadjustable axis is designed to install and adjust easily & precisely.
7. Passed durability test: 500, 000 times
8. Special oil used for the different temperature from -30Centigrade to 55Centigrade
9. Two-sided switch, inward or ourward opening(or closing) the door.
10. FARS Floor spring inspected by the national light association architectural hardware quality supervision and inspection center. It passed 0.5 million times durability test and its technical performance has complied to the national standard. It can be well used with all kinds of wooden doors, fireproof steel doors, aluminum doors and tempered glass doors.
11. Built-in redactor can prevent door or floor spring from damage in case of extreme exterior pressure or strong wind.
12. Constand tempreture device assures steady closing speed under significant difference in temperature.