- silent mode on off
- automatic hydraulic cushioning door closers
- latching speed control/dual valve closing
- precise sealed,preventing oil leakage
-this door closer is suitable for installing in stainless steel security door
- the installation modes of vertical,parallel and slide-rail type all can be chosen at will.
- the door closer can be chosen to stop or unstop at will.
- continuous adjustment of closing and latching speed:the fast speed can be adjusted to within 3s from 90 degree,slowness close can reach to 60s or more.