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• ANSI/BHMA A156.4, Grade 1 certified
• UL listed
• UL10C compliant for positive pressure
• ADA compliant (8301 and 8501)
• Non-handed
• Staked valves
• Standard, separate and independent, latch, sweep and backcheck intensity valves
• Cast aluminum body
• Rack-and-pinion design
• 1-1/4" (32mm) diameter piston
• 5/8" (16mm) diameter pinion journals
• 2-1/8" (54mm) projection (standard covers)
• All standard arm applications (with slim, full or metal covers) allow doors to swing 180 degrees, conditions permitting
• Shipped with slim-line plastic cover
• 10-year limited warranty

Aluminum Alloy Housing
Closer bodies are constructed of a special aluminum alloy, carefully selected to accommodate interaction with steel components and operating conditions.

Rack & Pinion Operation
Provides a smooth constant control of the door through its full opening and closing cycle. 180° door swing can be achieved when door, frame, hardware and arm function do not interfere.

Non-Handed
With few exceptions all series 8300/8500 and series 8301/8501 door closers are non-handed and can be installed on either right- or left-hand swing doors. Pinion shaft extends vertically through the closer body in both directions. Some options will require that the hand of the closer be specified.

Sweep Speed Control Valve
Allows adjustment of door speed from the doors full open position down to approximately 10° from the closed position.

Latch Speed Control Value
Allows adjustment of door speed from approximately 10° down to the door’s fully closed position.

Adjustable Backcheck Valve
Provides control of the door in the opening cycle, beginning at approximately 75° of door opening. It cushions the door opening when the door is forcibly opened beyond its pre-adjusted limits.

Standard Molded Covers
Molded of high-impact U.L. listed material. These covers are non-handed for all applications.

Warranty
Limited ten-year warranty for defects and life of the building on the aluminum housing.

Closer Fluid
NorGlide® door closer fluid is a specially formulated hydraulic fluid that contains lubricity and anti oxidation agents that provide optimum performance and efficiency. This fluid complements the interaction of the door closer's aluminum housing with its steel and zinc components, while maintaining stable viscosity to allow the door closer to perform in temperatures ranging from extremely high to as low as -40° F.