Norton 78E/F-RA-LH-690 78-B/F Series Surface Door Closer Dark Bronze Painted

78-B/F SeriesTraditional Door Closer

The 78-B/F Series is a surface closer with traditional styling that offers multiple sizes within a single size aluminum alloy shell. Templates for installing this closer are the same for all closer sizes. Only two springs are needed for 78-B/F closers to accommodate the complete range of door sizes. These can also be adjusted to meet the exact power requirements of the application.

Features:

• Choice of adjustable spring power
• B/D - Spring size 2, 3, or 4
• E/F - Spring size 5 and 6

• Handed
• (closer spring can be reversed in the field)

• Heavy-duty arms available: Parallel Rigid and Unitrol®

• 10-year limited warranty

Certifications:

• ANSI/BHMA A156.4, Grade 3

• UL / cUL listed for use on fire rated doors

• UL10C listed for positive pressure fire test

• This product is manufactured in an ISO 9001, ISO 14001 facility

• Listed by the New York City Materials and Equipment Acceptance Division

Explanation of Features: Aluminum Alloy Shell:

• Norton® closer shells are constructed of a special aluminum alloy, carefully selected to accommodate individual closer characteristics and operating conditions.

Adjustable Spring Power:

• Clock-type coil spring affords a wide range of closer power. Permits a fine adjustment of the closer to the environment.

Rack & Pinion Operation:

• Provides a smooth transmission of power for control of the door through its full opening and closing cycle.

Adjustable Sweep/Latch Speed:

• A dual purpose regulating valve, hex-key operated, permits independent adjustment of both sweep and latch speed.

Adjustable Backcheck Cushioning:

• An independent regulating valve, hex-key operated, provides an adjustable hydraulic cushion to the door opening speed toward the end of the opening cycle.
• This feature is standard with all but delayed action closers. Backcheck is not available with delayed action closers.

Non-Hold Open Arm:

• Standard closer will be supplied with a non-hold open arm.
• This arm is non-handed (field reversible).

Hold Open Arm:

• Closer arm has adjustable hold open feature (90° to 180°).
• Arm is handed.Order by suffixing "HA" to the Model number.

Warranty:

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

Field Reversible:

• Closer spring can be field-reversed to accommodate the hand of the door.
• It is recommended that wherever possible the closer be ordered handed.
• Parallel hold open arms and delayed action closers are not reversible.

Spring Power:

• Choice of adjustable spring power: B/D - Spring size 2, 3, or 4 E/F - Spring size 5 and 6