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On top there is a white plastic ...bolt?...going into the valve and it has a wire coming out of the top. Around that plastic thing is a 1/2 inch black metal band that is free spinning but will not come off. I think it is to protect the plastic part. I tried to pry it with needle nose but it won't budge without braking. Now, on the bottom there is a bolt with a soft center that depresses very slightly. That is probably rubber but it doesn't seem like a switch. If it is a switch, how long does it have to be depressed? Held in?
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