Dorma HZ 43 Automatic Flush Bolt

The Dorma HZ 43 Automatic flush bolt is designed to fire automatically when the door closes. It proves highly beneficial for fire doors that require to be held locked. Typically, an automatic closer is installed alongside the flush
bolts to ensure high door security (note that the closer is a separate piece of hardware, not integrated with the flush bolt). The flush bolt operates with a pin on the edge of the leaf, which activates the flush bolts when the active leaf closes onto it.

Features and Benefits

• Spring-loaded latch.
• Automatic locking and unlocking of the inactive door leaf.
• Detachable split spindle.
• Automatic flush bolt.
• Less mounting effort through split spindle.
• Compensation of mounting tolerances and enhanced operational reliability.
• Fire-rated

Other Features

• Installation on top and bottom of the inactive door leaf available.

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