Perrysburg Dodgeboy wrote:
...
I see they have a "LC-10SX LEVER CLIP FOR SX-SERIES VALVES. The Fumoto lever clip gives you extra security while using Fumoto Valves under normal or unusual conditions. No Tools required! The lever clip can only be installed when the valve is 100% in the closed and locked position." that locks the handle now. That is one of the reasons I would never use one, that and it slows the flow of oil by half. (not worried about someone opening it more if the spring became weak and let the lever open on it's own.)
Don
The spring would have to break completely to allow the lever to leave the detent and open on it's own, since it has to be lifted and turned to allow fluid to flow and I simply don't see that happening. It could happen, but I'd put the likelihood up there with the oil pan spontaneously developing a hole. As far as slowing the flow, I don't see that as a problem.