The 7500 Series Door Closer offers customers the ideal combination of superior performance, strength and quality. Ideal for interior or exterior doors in facilities that demand realiability.
7500: Adjustable spring sizes 1 through 6 (ADA Compliant)
7500: Tri-Style packaging for regular, top jamb or parallel arm mounting
7700: Sized springs 2,3,4,5,6 with 50% power adjustment
7700: Bi-packed for regular or top jamb mounting
Non-handed
Rack-and-pinion design
Cast aluminum body
2-3/16" (56mm) projection
1-1/2" (38mm) diameter piston
5/8" (16mm) diameter pinion journals
Staked valves
Standard, separate and independent, latch, sweep and backcheck intensity valves
Backcheck positioning valve
NorGlide fluid
Molded plastic cover
All standard arm applications allow doors to swing 180°, conditions permitting
Self-drilling screws
Slide Tracks: push or pull side mounting
Optional Features:
Heavy-duty arms: Regular Rigid, Parallel Rigid, CloserPlus, CloserPlus Spring™ and Unitrol
Corrosion resistant model (non-hold open only). Specify 7500SS
Metal cover. Specify M suffix
Lead lined metal cover. Specify MLL suffix
Enhanced backcheck. Specify EBC suffix
Delayed action with pressure relief valve
Retrofit plates
Closers for interior and exterior doors shall be full rack-and-pinion type with cast aluminum alloy body. Closers shall be surface mounted and shall project no more that 2-3/16" (55mm) from the surface of the door. Closers shall be non-handed to permit installation on doors of either hand. Closer fluid shall contain lubricity and anti-oxidation agents. Closer fluid shall maintain stable viscosity to allow door closer to perform in temperatures ranging from extremely high to as low as -40°F. Closers shall have multi-size spring power adjustment to permit setting of spring from size 1 through size 6. Closers shall have two non-critical valves, hex key adjusted, to independently regulate sweep speed and latch speed. Closers shall have backcheck cushioning controlled by a hex key adjusted valve. Closers shall have backcheck position controlled by a hex key adjusted valve. [Closers shall have adjustable delayed-action closing controlled by a hex key adjustable valve.] [Closers shall be highly corrosion resistant and shall have all external body components of aluminum, brass or stainless steel material and all fasteners of stainless steel.] Regular arm and top jamb closers shall have a non-hold open shoe permitting 15% ( +/–7-1/2% ) power adjustment. **Closers shall be enclosed in a [molded resin cover] [plated or sprayed metal cover]. Closers to be Norton [7500] [7500M] [7500SS].
**For special arms insert the appropriate specification.
7700 Series
Closers for interior and exterior doors shall be full rack-and-pinion type with cast aluminum alloy shell. Closers shall be surface mounted and shall project no more that 2-3/16" (55mm) from the surface of the door. Closers shall be non-handed to permit installation of doors of either hand. Closer fluid shall contain lubricity and antioxidation agents. Closer fluid shall maintain stable viscosity to allow door closer to perform in temperatures ranging from extremely high to as low as -40°F. Closers shall have power adjustment to permit a 50% increase in power over the minimum closing force for each size. Closers shall have two non-critical valves, hex key adjusted, to independently regulate sweep speed and latch speed. Closers shall have backcheck cushioning controlled by a hex key adjusted valve. Closers shall have backcheck position controlled by a hex key adjusted valve. [Closers shall have adjustable delayed action closing controlled by a hex key adjustable valve.] Regular arm and top jamb closers shall have a non-hold open shoe permitting 15% (+/– 7-1/2%) power adjustment.** Closers shall be enclosed in a [molded resin cover] [plated or sprayed metal cover]. Closers to be Norton [7700] [7700M].
**For special arms insert that appropriate specification.
**Unitrol Arm
Door closers shall have a fixed door stop feature effective at one point selected at installation, from 85°-110° in five-degree increments. Door stop shall be cushioned by a shock-absorbing heavy-duty spring action effective at the [soffit plate] [arm shoe] pivot. [Closers shall be provided for parallel arm installation using rigid steel main arm and secondary arm lengths proportional to the door width.] [Closers shall be provided for top jamb installation using steel, rigid main arm and telescoping secondary arm adequate for the frame reveal of the openings.]
**CloserPlus Arm
Door closers shall have a field reversible door stop. Door closer shall have a feature with selectable on and off ball and detent hold open. Hold open tension shall be adjustable effective at one point selected at installation, from 85°-110° in five degree increments. [Hold open mechanism shall have engage/disengage selection actuated by thumbturn]. Closers shall be provided for parallel arm installation using a forged rigid steel main arm and secondary arm.
**CloserPlus Spring™ Arm
Door closers shall have built-in door stop [and holder] effective at one point selected at installation, from 85°-110° in five-degree increments. Door stop mechanism shall be reversible and have a buffer spring that engages prior to the dead stop feature, reducing shock loads to the door and frame assembly. Door stop mechanism shall be attached to soffit plate. [Hold open mechanism shall have engage/disengage selection actuated by thumbturn]. Closers shall be provided for parallel installation using a forged rigid steel main arm and secondary arm.
