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Where do we use a door coordinator

Door coordinators are also known as selectors and are used to control the closing sequence of a pair of doors when both leaves are furnished with latching hardware and one leaf latches into the other or has an overlapping astragal.
Gravity Door Selector for Hollow Metal Doors
Soffit Mounted Door Coordinator for Door Frame
Spring Loaded Door Coordinator for Double Door
What does Door Coordinator do
The door coordinator is mainly for the service of fire rated doors, and its function is to control the closing sequence of the left and right doors. If the double door cannot be closed in order due to personnel entering and exiting during a fire, and a door gap problem occurs, the fire and smoke prevention requirements of the design cannot be achieved. The installation of the door coordinator can solve the problem of the sequence of closing the double-leaf fire door, so that the fire door can play a reliable role of fire prevention, smoke prevention and partition.
 
 
What is door coordinator?
 
Door coordinators are used to control the closing sequence of a pair of doors when both leaves are furnished with latching hardware and one leaf latches into the other of has an overlapping astragal. Typically, these openings will have a vertical rod exit device or automatic flush bolts installed on the inactive leaf of the opening and a mortise, bored of preassembled lock or latch or mortise exit device on the active leaf. If the active leaf closes first, the projected latch-bolt will prevent the inactive door from being able to close. In these cases, the inactive leaf must close before the active leaf, ensuring the opening returns to the closed and latched position.
The builders Hardware Manufacturers Association (BHMA) established industry standards to distinguish the differences between the types of door coordinators. These standards are recognized by the American National Standards Institute (ANSI) and are published by BHMA. Standard A156.3 – Exit Devices establishes the criteria for determining the grade of coordinators.
 
There are three types of coordinators: 
soffit-mounted, gravity and spring loaded
Soffit-Mounted Coordinators:
Soffit-mounted coordinators consist of a rectangular shaped tube that is attached directly to the soffit of the head of the door frame. A bolt projects from the edge of the coordinator holding the active leaf open until it is released by the trigger mechanism on the inactive leaf end of the coordinator. As the inactive leaf closes it compresses a trigger releasing the bolt holding the active leaf open, and allows the active door to close.
Soffit-mounted coordinators are available in primed steel and a limited number of plated finishes. Primed steel coordinators can be painted to match the frame, making them unobtrusive.
Brackets and Filler Bars
Auxiliary brackets are used with soffit-mounted coordinators to provide a secure anchoring base for parallel arm closer brackets, soffit-mounted strikes for surface vertical rod exit devices and arm brackets for overhead stops.
Filler bars are used to extend the body of soffit-mounted coordinator across the width of the opening.
 
Gravity Coordinators:
Gravity coordinators consist of a cast arm and pivot assembly that is mounted to face of the head of the door frame on the pull side of the opening. When the inactive leaf is opened the arm drops and holds the active leaf open until the inactive leaf closes. Next, the arm is pushed up and allows the active leaf to close. A roller on the end of the arm permits the coordinator to work smoothly and efficiently.
Gravity coordinators are typically used where aesthetics are less of a concern, due to the projection of the arm above the door. Because the arm is exposed, gravity coordinators are often subjected to vandalism.
Spring Loaded Door Coordinator:
A spring-loaded arm is released as the doors open. This arm holds the second closing leaf open until the first closing leaf is in a position to release it.
 
How to install gravity door coordinator?
 
1.Position the coordinator on outside of the top frame.
2.Mark two mounting holes on outside of the top frame if the coordinator is on correct position.
3.Drill and tap for #10-24 machine screws on metal door. Make 1/8" pilot drill on wood door.
4.For wood door application, a Strike Plate must be installed on top edge of the inactive door.
5.Mount the ADJ Door Bracket. 
This bracket will support the coordinator kept in projection when the doors are closed.
6.Test operation 
After complete installation, the pivotal lever will ride over the strike plate when the inactive door is closed. When active door and inactive door be opened at same time, the coordinator arm will drop down 20°. If the door closers are installed, the inactive door will be closed earlier than the active door as the active door be held by the coordinator arm at this time.

Door Coordinator Project

D&D door coordinator suitable for Residential Building, Office Building,Education, Healthcare, Hotel, Government applications.We can supply international branded quality at factory cost with mechanical guarantee and after sales service.
Government
Education  
Office Building
Healthcare
Commercial
Hotel

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D & D Hardware has established long business relations with customers from America, Europe, Middle East and Asia, Selling our items are proved to be profitable,collection approve by consultants,international branded quality with certifications from Intertek/UL.

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+86 139 2903 7292

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12th Floor , Building 2, No. 898, KeChuang Technical Zone, Jiangmen Avenue, Pengjiang District, Jiangmen City, Guangdong, China

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  NO.4 Bidg,Street 33,West Gaoxin Rd,High-tech Zone,Jianghai Dist.Jiangmen City,Guangdong,China
   +86 139 2903 7292
   +86 139 2903 7292
  +86 139 2903 7292
 David Jian(Managing Director)
 Ms Judy(Financial / Account Dept. )

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