Door Closer Terminology

Door closers are significant bits of door hardware and they are basic and essential parts in all fire appraised and handicap available accessible assemblies. They additionally help upgrade security, give comfort and they help with keeping up room temperatures. Door closers can be befuddling now and again, however this article will simplify common door closer terminology and provide you with a better understanding of this basic bit of equipment!

Latching Speed : Latching speed valves enable adjustment of the last few degrees (15 – 0) of closing. This is an especially helpful feature to prevent the door from slamming into the frame. If this phase is too slow the door may not latch, whilst allowing it to close too fast could create a finger-trapping hazard.

Closing Speed : Closing speed valves enable adjustment of the speed at which the door closes after being opened. In other words it is the time frame from the start of door closing to certain degree before door hits it latch point.

Delayed Action : This feature provides prolonged closing time. It delays the closing cycle between 120 & 70 degrees. This allows extra exit time to assist the passage of trolleys, wheel chairs, elderly people, etc.

Back Check : This feature of door closer provides “resistance” to prevent the door from being thrown open (by people or the wind) and causing personal injury or damage to the door, door handles or walls. In other words it provides a cushioning effect when the door is forcibly thrown open.