Table of Contents
What is a gravity coordinator?
Gravity Coordinators are non-handed and when the active door is open, coordinator prevents active door from closing until inactive door bypasses. As inactive door continues closing, roller rides over strike plate on the door bracket, holding arm above active door.
What does a door coordinator do?
A door coordinator helps to ensure that the correct door leaf closes first so the doors can close and latch properly (here’s a video). BUT – when the door has manual flush bolts and no closer on the inactive leaf, the coordinator serves no purpose. The inactive leaf is closed and latched manually (by a person).
What is a coordinator on a fire door?
(7) Coordinator ensures that door leaves close in proper sequence (pairs only). The same situation occurs when a pair of fire doors is equipped with an overlapping astragal – the proper leaf has to close first. The function of a coordinator is to ensure that the leaves of a pair close in the proper sequence.
When the active leaf of a pair of doors latches into the inactive leaf which of the following hardware items is used to ensure the door leaves close in the proper sequence?
Coordinator – A device used on a pair of doors to ensure that the inactive leaf closes before the active leaf. This device is necessary when both doors have closers and either of the following is true: 1) There is an overlapping astragal; or 2) The latchbolt of the active door needs to engage into the inactive leaf.
What is a flush bolt?
Flush bolts are recessed into the door edge (top and bottom) and slide upward or downward into the jamb (or threshold) to keep the door closed. Flush bolts are available in square and rounded corners and in various sizes and finishes to match up with your existing or new door hardware.
What is a door Astragal?
Attached to the meeting edge of single or double doors, astragals are vertical components designed to seal off gaps that leak air, water, noise, light, and debris. They can also function to detain gases, smoke, or flames in the event of a fire. Last, astragals can increase the security of door locks and strikes.
Where do you use a flush bolt?
Flush bolts are used to secure the inactive leaf of a pair of doors, projecting into the frame head and into a floor strike. In this application, the active leaf would typically have a lockset which latches into a strike mounted on the edge of the inactive leaf.
How does a flush bolt work?
Flush bolts are used on pairs of doors to secure the inactive leaf, projecting into the frame head and into a floor strike. An automatic flush bolt is projected when the active leaf closes and depresses a trigger on the edge of the door. When the active leaf is opened, the automatic flush bolt retracts.
Which side of door does astragal go on?
3. Decide where the astragal should be installed. In order for the astragal to function properly, it should be installed on the pull side (the side where the doors pull toward you) of the active leaf on reverse bevel doors. On regular swing doors, the astragal is installed on the push side of the inactive leaf.