ives spring hinge closing force

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The regulation valves are designed to adjust the flow the hydraulic fluid in the closer which regulates the door closing speed through various phases of the closing cycle. The regulation valves h...
Power Boost is a positive latching feature that increases the latch force, to over come building stack pressure or door weather stripping, etc, if the door stops before coming completely closed. T...
Yes, the spring torque on 3SP1 butt hinge is adjustable.  See instructions at this link:https://static-or01.inbenta.com/fc7332911aa38d5387ffdef79e8605c6ecdc727ece31acf5bc8e26dcac5d29e4/Iv...
The size 6 handed closers will have the most (strongest) closing force. The 4016 (pull side), the 4026 (top jamb push side) or the 4116  (push side parallel arm)  have the highest closing force.