When it comes to effective fire safety, small things make a difference. Door closers are not all made equal. In busy environments, force-closing doors will cause some closers to fail. Forcing a door shut in an emergency is the last time you want it to fail.
The one-way valve inside Rutland’s 9000 and 11000 series door closers enables the internal hydraulic oil to flow the other way when the door is forcibly closed, ensuring dependable operation, however hard you push it. The one-way valve prevents oil leaks caused by excess pressure, avoiding failure.
It's a fine line between safety and tragedy.
Dependable door closers make the difference.
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