[ngreen]

I'd say it releases in less than two seconds. We thought about ways to release faster but it didn't seem practical. We weren't losing to much time because of it. The housing and impeller was out of a portable shop vac. When we used pnuematic tubing on the end of the shop vac we drew 12" of water out of a cup. I'm not sure how well that is comparatively, but it works. We tested the amps from the fp when the impeller was attached in open air it was 5 amps, in its housing w/o suction it was 2 amps, and with suction it was 1 amps. That kind of surprised us but it makes sense enough.