Some Technical Words

For the purpose of basic understanding, the following definitions shall apply:

 

Door Closer (Hydraulically Regulated):

A hydraulic door closer is equipment for closing of doors by the help of spring control valve such that the phase of closing is slowed down by the hydraulic damper.

 

Anti-Clockwise Door (Right Hand Door):

A door which, when viewed from above rotates in an anti-clockwise direction about its hinges while opening.

 

Clockwise Door (Left Hand Door) :

A door which, when viewed from above rotates in an clockwise direction about its hinges while opening.

 

A Right Door Closer :

A door closer which is required to be used on an anti-clockwise door

 

A Left Door Closer :

A door closer which is required to be used on a clockwise door.

 

A Universal Closer :

A door closer which is suitable for the working of both an anti-clockwise as well as for clockwise door without any change in the parts of closer. This is the most widely used type of door closer.

 

Closer Size :

A term used to describe the strength of a door closer. Generally, the greater the door width, the larger the closer size should be.

 

Closing Cycle :

This is a term used to describe the door swing from its fully open position to the fully closed position.

 

Handicap Code :

Also called barrier code or accessibility code, is a term used to describe a standard that is intended for use in making buildings and facilities accessible to the handicapped.

 

Hold Open :

Optional mechanical feature that is incorporated into the door closer arm assembly. Hold open arms cannot be used on “UL” or fire rated door assemblies.

 

Latch Speed :

The cycle of closing from about 10° to door closed. This cycle is controlled by a valve to either speed up (to overcome a latch bolt) or slow down the closing of the door. (keep the door quiet).

 

Multi-Size :

Door Closers with adjustable spring power, to permit the adjustment of closing power to meet the needs of most doors. They are available with normal power range adjustments (Sizes 2-6) or with barrier code and power range adjustments (Sizes 1-4).

 

Rigid Parallel Arm :

An exceptionally sturdy arm assembly, for parallel arm application only.