Norton Closers 7770MRL

Product Specification 1

Product Specification 2

Product Specification 3

Our experience is that you can find the right commercial door closures from Norton Door Controls. They have been designing and manufacturing door operating systems since 1880, and have a proven track record of innovation in developing new door operating systems.

This constant innovation and development is important to the person installing the door operating system and for the owner of the commercial facility where it will be in operation for years to come. In the first place it means years of reliable operation. But it also means that you will be able to find the right components for the job.

Norton Door Controls covers all the bases from simply preventing doors from slamming shut to full automated operation with energy saving features. These commercial door operating systems come in a wide variety of looks including a concealed system hidden in the door header.

Norton Door Controls is part of the ASSA ABLOY family of companies featuring top of the line doors and door operating components all designed to work together in one seamless system. We look to ASSA ABLOY to provide our customers with door solutions at a variety of costs and features.

You can too. From light duty to heavy traffic doors, Norton Door Controls has the type of commercial door closure you need.

The Security Closer Line uses Norton's 7500 and 7700 series door closers with a variety of regular rigid and parallel arms and track options. Fixed link arm assemblies, permanent joints, orbital riveted elbows, arm shoe, soffit joints and Torx screws with tread lock prevent disassembly. Norton's 7500/7700 and 8000 series door closers are also offered with some of the same arm options as the 7770/7570 but without the security cover. Torx screws are available standard for tamper resistance. These closers are utilized in schools and industrial environments where heavy abuse and vandalism may occur.

7570: Adjustable spring sizes 1 through 6 (ADA Compliant)

7700: Sized springs 2,3,4,5,6 with 50% power adjustment

Security arms – joints feature permanent, orbital riveted elbow and arm shoe/soffit plate joints which prevent disassembly

Adjustable backcheck cushioning and positioning

Torx drive machine screws with security pin

Optional Features:

Hold open

Slide track – push or pull mounting

Heavy-duty arms: Regular Rigid, Parallel Rigid, CloserPlus and CloserPlus Spring™

Delayed action

Enhanced backcheck

7570 Series

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" from the surface of the door. Closers shall be reversible but supplied with a handed metal cover. 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 1 through 6. Closers shall have two non-critical valves, hex key adjusted, to independently regulate sweep and latch speed. Closers shall have backcheck cushioning controlled by a hex key adjustable valve. Closers shall have backcheck position controlled by a hex key adjustable valve. [Closers shall have adjustable delayed action closing controlled by a hex key adjustable valve.] **Closers shall be enclosed in a [plated] [sprayed] metal cover. Closers to be Norton [7570]. Covers shall be fastened to the body at four points, two at the top and two at the bottom to prevent prying. **For special arms insert the appropriate specification.

7770 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" from the surface of the door. Closers shall be reversible but supplied with a handed metal cover. 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 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 and latch speed. Closers shall have backcheck cushioning controlled by a hex key adjustable valve. Closers shall have backcheck position controlled by a hex key adjustable valve. [Closers shall have adjustable delayed action closing controlled by a hex key adjustable valve.] **Closers shall be enclosed in a [plated] [sprayed] metal cover. Closers to be Norton [7570]. Covers shall be fastened to the body at four points, two at the top and two at the bottom to prevent prying. **For special arms insert the appropriate specification.

**Unitrol Arm

Door closers shall have built-in door stop 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 pivot. Closers shall be provided for parallel arm installation using rigid steel main arm and secondary arm lengths proportional to the door width.

**CloserPlus 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 attached to soffit plate. [Hold open mechanism shall have engage/disengage selection actuated by thumbturn]. Closers shall be provided for parallel arm installation using rigid steel main and secondary arms.

**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 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 reversible and attached to soffit plate. [Hold open mechanism shall have engage/disengage selection actuated by thumbturn]. Closers shall be provided for parallel installation using rigid steel main and secondary arms.