GENERAL INFORMATION

Series 78-B/F

The Norton Series 78-B/F Traditional Surface Closers represent a combination of traditional styling and modern closer features. All closer sizes are contained within a single size aluminum alloy shell. Templates for installing this closer are the same for all closer sizes.

In addition only two springs are needed to accommodate the complete range of door sizes. One clock spring is adjustable to meet the closing force requirements for closer sizes 2, 3, and 4. One other larger spring can be adjusted to meet the closing force for closer sizes 5 and 6. Both springs are powerful enough to provide an additional 50% power increase over the minimum closing force for the largest size in their range: i.e. 50% over size 4 and 50% over size 6.

These Norton Traditional Surface Closers have an unusual ability to accommodate power adjustment to their environment. The adjustable clock coil spring provides a small incremental increase or decrease through a wide range of closer power. They can be adjusted to meet the exact power requirements of the installation. Sweep speed, latch speed and backcheck cushioning can also be adjusted to door, frame and variable conditions.

Suggested Specification

Closer for ______________ interior (and) exterior doors shall be rack-and-pinion type enclosed in a cast aluminum alloy shell. Closer spring shall be clock-type coil spring and shall be adjustable through a wide range of closing power. Hydraulic fluid shall be non-gumming and non-freezing. Closer shall be equipped with a single hex-key-operated regulating valve for control of both closing and latch speeds. Closer shall have adjustable backcheck. Closer shall be Norton Series 78-B/F Traditional Surface Closer or equivalent.

ANSI/BHMA/Federal Specs

The 78-B/F is designated as Grade 2 Traditional Type Surface Door Closer CCQ1000 w/o PT4A, 4C, 4D, 4F, 4H under FF-H-121D federal specifications and ANSI A156.4 specification.

U.L. Listing

All Norton Series 78-B/F Door Closers with non-hold-open arms are listed by Underwriters' Laboratories, Inc, for use on labeled fire doors.

Ordering Information

Use the following outline to select the correct Catalog Number for the type of closer you require. Suffix the closer size with the correct option designation desired.

Specify the finish by Norton Symbol, from page 78-B/F-2, i.e. 78-B/D-PAx DB

Finishes

All Norton Traditional Surface Closers and Accessories are available in the following sprayed finishes. Order sprayed finishes by the Norton Symbol.

*Available at extra cost. Closers can be ordered prime coated only, i.e. (SRI), or prime coated with finish coat, i.e. (SRI) x (DB).