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spring hinge material
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Question
Answer
Is the spring torque on 3SP1 hinge adjustable?
Resolution:
Yes, the spring torque on 3SP1 butt hinge is adjustable. See the 3SP1 instructions: :
What would cause the Von Duprin 88 series exit device latchbolt not to extend and the crossbar to droop?
Resolution:
The spring in the hinge case or end case assembly lifts the crossbar and both lever arms. If broken, the crossbar and lever arms will drop down. The weight of the crossbar and levers will automati...: