Aluminum Alloy Housing
Closer bodies are constructed of a special
aluminum alloy, carefully selected to
accommodate interactive 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 7500 and
series 7700 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. This permits the closer to be
positioned on either right or left hand doors
for most applications. 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.
Tri-Style® Packing
7500 comes with screws, brackets and soffit
plates to allow for regular, top jamb, and
parallel arm installations.
Adjustable Backcheck
Cushion Valve
Provides control of the door in the opening
cycle, beginning at approximately 75° of door
opening. It slows/cushions the door opening,
when the door is forcibly opened beyond its
pre-adjusted limits.
Adjustable Backcheck
Position Valve
Allows the door opening position, where
backcheck cushioning begins, to be adjusted to
a greater door angle, up to a maximum of 20°
farther (approximately 95°).
Standard Molded Cover
Is molded of high-impact U.L. listed material
and covers the entire closer body assembly.
This cover is non-handed for all applications.
Warranty
These closers carry a limited ten-year warranty
against defect, and life of the building on the
aluminum housing.
Closer Fluid
NorGlide® closer fluid is a specially formulated
multi-viscosity 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.
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