Iris Valve Opener
|Iris valve opener|
This is a small but powerful electric motor attached to an infinitely variable transmission. The Iris valve opener pries open non-functional iris valves or regular doors, either by force or by attaching to emergency crank handles. The time required varies the size and obstinacy of the door in question, but the gearing of the opener can go low enough to eventually bend and tear through almost any barrier. The powered version requires an external 1Kw power supply.