DC90 Series

Extra Heavy Duty Door Closer

ANSI/BHMA A156.43 Grade 1


  • Rack & Pinion operation provides smooth, constant control of door through full opening and closing cycle
  • Closer body constructed of high grade cast iron to stand up to high traffic conditions
  • Sweep speed control valve allows adjustment of door speed from open door's 90° position to approximately 10° from closed position
  • Latch speed control valve allows adjustment of door latch speed from approximately 10° down to door’s fully closed position
  • Includes self-tapping (SRT), sex nuts & bolts (SNB), and parallel arm (PA) bracket to allow for multiple ways to install
  • Adjustable back check valve provides control of door in opening cycle from approximately 75° of door opening. Valve cushions door opening when door is forcibly opened beyond its preadjusted setting
  • Standard cover molded from high impact materials
  • Adjustable through power range of 1 through 6
  • Confirms to opening force requirements of ADA and ANSI?BHMA standard A117.1 for interior doors
DC90 drawing


Power Size: 1 through 6 (adjustable; ships at 3); meets ADA barrier-free requirement
Body: Cast iron body with rack & pinion design
Pressure Valves: Separate and independent latch, sweep, and back-check pressure valves
Handing: Non-handed; can be installed on either left- or right-handed swing doors
Cover: Plastic full cover standard
Fasteners: SRT fasteners shipped standard
Piston: 38mm (1-1/2") diameter
Pinion Shaft: 18mm (45/64") diameter
Projection: 58mm (2-9/32") with full cover


  • ANSI/BHMA A156.4 Grade 1 Closers
  • ANSI A117.1 ADA Accessibility
  • UL Listed for ANSI/UL10B and UL10C up to 3 hours
  • UL 228 UBC Standard 7-2 (1997) NFPA 252
  • NFPA 80 National Fire Protection - Fire Door Assembly
  • NFPA101 National Fire Protection - Life Safety
  • ANSI/BHMA A156.18 Finishes

Standard Arm and Options


Regular / Parallel Arm

Regular arm with adjustable slider for wide range of frame conditions. Can be mounted to hinge (pull) side or top jamb.

For parallel arm, mount bracket mount on top of frame on push side of door. Frame should be reinforced for bracket.


Hold Open Arm


Adjustable round slide arm for wide range of frame conditions. Can be mounted with parallel bracket.


Cush Arm


Heavy duty forged arm with cush stop, parallel arm mount. Mount using frame reinforcement in stop.


Hold Open Cush Arm


Heavy duty forged arm with cush stop and hold-open parallel arm mount. Handle controls hold open function. Mount using frame reinforcement in stop.


Extra Heavy Duty Arm


Parallel arm features forged, sold steel main and forearm for high traffic installation.


Hold Open Extra Duty Arm


Parallel arm features forged, solid steel main and forearm for high traffic installations with hold open function adjustable at shoe.


Sliding Track

DCAM90STH - Hold Open Arm

Single-lever (Track) arm with surface-mounted closer for interior use on narrow head frames and top rails.


Plastic Full Cover


Metal Cover


Metal Cover


Optional Functions

Delayed Action Closing

An optional hydraulic adjustable feature adds a third speed (DA) range to the closing cycle. This feature becomes effective when the door is opened and released at any point beyond 70°. The amount of time delay depends upon the angle of door release and valve adjustment. The valve can be adjusted with 4mm hex key (provided) from no delay time up to maximum delay times of:

Delayed Action Closing

Pressure Relief Safety Valve

The (DA) hydraulic system contains a pressure relief valve. Any time the door is forced toward the closed direction while it is in the closing cycle, the valve will open and allow the door to close. This prevents damage to closer, arm, frame and door.

Suggested Applications

Delayed Action Closing allows slow-moving traffic to clear the opening before the door closer’s “normal” closing cycle begins. Healthcare, Hospitals and Nursing Homes facilities all use this feature. It gives sufficient time for persons in beds, wheelchairs or on crutches to pass through an opening without concern of the door closing on them. Delayed Action closers can also accommodate openings with movement of food service carts, hand trucks, and pallet jacks.


28 Aluminum Painted
20 Duro/Dark Bronze Painted
Graphite Black


Not all finishes are standard with each door closer. Custom finishes may be available with MOQ and extended lead times.