Panic push bar
The panic lock & push bar is an integrated panic exit device for use with outward opening emergency doors.
Classification in accordance with BS EN1125 (emergency exit).
Single door units have a lockcase which is operated via an internal push bar.
Double doors include a reverse box which is fitted to the slave leaf. This drives vertical rods, one driven upwards engaging in the head of the door frame, the other driven downwards engaging in the door threshold. The reverse box is operated by a second internal push bar.
The lockcase has a stainless steel face plate and the bolt and latch are nickel plated. The push bar set is supplied as natural anodised aluminium. The lockcase also has provision for a europrofile cylinder and an external escape handle can also be fitted where necessary.
For outward opening doors.
Operation of panic push bar
When pressure is applied to the internal push bar, the latch and deadbolt are withdrawn, allowing the door leaf to open. Double doors require activation of the slave leaf bar (2) to release both door leaves, whilst activation of the master leaf bar (1) will open only the master leaf. If the deadbolt is in the unlocked position, the master leaf push bar can function as a door handle operating the latch.
If the slave leaf push bar is activated, the vertical shoot bolts in the slave leaf are retracted and both leaves open. When the slave leaf is subsequently closed, a small button on the lockcase forend (3) must be pressed to re-engage the shoot bolts in the door frame.
The master leaf is deadlocked by one full turn of the key or thumbturn (4) towards the slave leaf.
If the door is provided with external access, a lever handle may be fitted. This will allow entry if the deadbolt is not in the locked position. The handle and bar arrangement is fitted with a split spindle, so if the escape bar is operated, the external lever handle is disengaged from the latch, preventing entry without a key.