AD400 Series
Popular style,Economic model for Home and Office use
Certificate & Approvals
Manufactured by quanlity assured ISO9001 factory
UL Approval & CE Certificate
500,000 cycles passed
Available Temperature
-45°C to 50°C
Model Door weight(KGS) Door width(mm) Mounting Function
Horizontal Vertical

Hold open

Back Check
AD401 0-30 850 165 19 Opt  
AD402 20-45 950 165 19 Opt  
AD403 40-65 1000 165 19 Opt Opt
AD404 60-85 1100 188 19   Opt
Available for 4 different power sizes and could be used on interior or exterior doors
Adjustable closing & latching speed
"1" --- Closing speed adjusting valve,range from 180° to 15°
"2" --- Latching speed adjusting valve,range from 15° to 0°
Built-in hold open(optional)
Built-in hold open function can be used to hold door open at angles 85 round.Available for Power 1,2,3
Adjustable Back-check Function(Optional)
Provides resistance within the door closer to prevent the door leaf from being thrown open. The angle and resistance of the back check can be varied according to your requirements. Normal operation range is 75° to 80°
Construction & Technical Details
Constructed with precise aluminum die-casting body with steel arm against rust.
Heat treated steel rack & pinion immersed in high grade oil operate a nest of coils to give a smooth precise action & minimum wear.
Piston and spindle has been heat treated for high strength.
Model AD401 AD402 AD403 AD404
BODY LENGTH (A) 180 180 180 204
BODY WIDTH (A) 42 42 42 46
BODY HEIGHT (A) 62.5 62.5 62.5 65.5