Double Spring Door Closer A-051B - A-051B

1. Istallation Diagram:

2. Features:

1. Closing speed section 180-20 degrees and latching speed section 20-0 degree controlled by two independent hydraulic pressure valves.

2. Fine oil seal to prevent leakage.

3. High quality casting aluminum alloy body coated with three layers of glossy paint prevented from oxygenation.

4. The high-carbon steel geer shaft works smartly with least tranfigure through high frequency of hardening and tempering.

5. Well paintied moving arm against erodent.

6. Self closing with/without hold-open feature; non-handed.

7. Passed the fire-testing by National Center for Quality Supervision and Testing of Fire Building Materials.

8. Applicable for wood door,steel door,fire door,etc.

9. Colour options: Silver, black, gold,white. other options are available upon request.

10. OEM available.

11. Opptional materials: mirror,satin,titanium.

12. On time in full.

13. Installation types: vertical, parallell, sliding-rail on the door.

14. Self quality test for oil(temperature test), spring & operation of door closer(durability test)

15. Test cycles: at least 300000; durability: at least 2 years; with better accessories, more test cycles passed and longer durability

3. Function diagrams:

RAL to Order:

4. Production equipments:

5. Testing machines: