INOX DC90 Series Extra Heavy Duty Door Closer

The INOX DC90 Extra-Heavy Duty Door Closer is engineered for maximum durability and consistent, smooth door operation, even under high-traffic or heavy-use conditions. Its rugged cast-iron construction houses a rack-and-pinion mechanism that ensures controlled, reliable door motion through the full swing. Designed to accommodate a wide range of door sizes and weights, the DC90 is adjustable across power sizes 1 through 6, giving installers flexibility and confidence that it will perform under varied load conditions. With its robust build and precise hydraulic control, the DC90 is ideal for commercial, institutional, or other demanding environments where performance and longevity matter.

Review the manufacturer's page for more information.

Specifications

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

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 DCAM90HO Adjustable round slide arm for wide range of frame conditions. Can be mounted with parallel bracket.
	Cush Arm DCAM90CUSH Heavy duty forged arm with cush stop, parallel arm mount. Mount using frame reinforcement in stop.
	Hold Open Cush Arm DCAM90HCUSH 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 DCAM90EDA Parallel arm features forged, sold steel main and forearm for high traffic installation.
	Hold Open Extra Duty Arm DCAM90HEDA Parallel arm features forged, solid steel main and forearm for high traffic installations with hold open function adjustable at shoe.
	Sliding Track DCAM90ST 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 DCCV90F
	Metal Cover DCCV90FMT
	Metal Cover DCCV90FSS

Optional Function

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:

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.

Stocked Finishes

Stocked finishes are standard and available for quick shipping, generally within 3 to 5 business days. Other finishes are limited to particular levers and noted below.