UNITY Hardware Ltd. Logo-professional architectural door hardware manufacturer 
UNITY DC4025 heavy duty door closer is a mainstream overhead door closer suitable for both interior and exterior door type. For the material, it is aluminum alloy pressure die-cast.
DC4025 Heavy Duty Door Closer Item List
| Item No. | Description |
| DC4025 | Door Closer with Standard Arm and BackCheck |
| DC4025DA | DC4025 with Delayed Action |
| DC4025ST | DC4025 with Slide-track Arm |
| DC4025DAST | DC4025 with Slide-track Arm and Delayed Action |
| DC4025HO | DC4025 with Hold Open Arm |
| – FMT | Add FMT suffix for order with DCCV40 cover |
Specification and Features
– Full Rack and Pinion Construction
Heat-treated rack and pinion immersed in high-grade oil to give a smooth action and minimum wear and tear
– Adjustable Power Size (EN2 – EN5)
Power Size can be adjustable by spring valve according to door width and weight variation.
| DC4025 | EN2 | EN3 | EN4 | EN5 |
| Маx. Door Width (mm) | 850 | 950 | 1100 | 1250 |
| Маx. Door Weight (kgs) | 40 | 60 | 50 | 100 |
| Маx. Opening Angle | 180° | 180° | 150° | 120° |
– Non-Handed
DC4025 can be universally fitted on both left and right-handed swing door
– Flexible Mounting Position
DC4025 can be installed on both pull and push side of the door and can be fitted and both door and frame.
– Adjustable Latch and Closing Speed
DC4025 is supplied with hydraulic controlled valves to adjust latch and closing speed.
– Adjustable Backcheck
Backcheck feature set and adjusted by an independent valve to protect doorset from violent opening.
Optional Features
– Delayed Action
An additional adjustable valve can be included to allow additional time before closing.
– Closer Cover: DCCV40
Metal cover available to cover mounting screw holes and create a clean appearance
– Door Hold-Open
The hold-Open arm allows the door to be held open at a preset angle for a special occasion
– Slide-track Arm Mounting
Slide-track arm mounting allows the minimum overall projection of closer from the door, which provides greater safety, smoother operation, and more appealing aesthetics
EN1154 Classification
| 4 | 8 | 4 | 1 | 1 | 3 |
| 2 |
Finishes
– Silver
– White
– Black
– Gold
– Other finishes available on request
