So the pressure relief valve on my recovery tank blew recently. When it blew, it never shut again. It spewed LPG for hours and let out 50 lbs of gas. It never shut off. The seller of this tank ensured me that this is what the tank is designed to do. I've seen other tanks briefly release some pressure before closing again; isn't this what they're designed to do? Doesn't it make more sense, wouldn't it be safer if the release valve let out the excess pressure then closed? The seller claimed that it was engineered to just keep venting. I don't understand.Isn't it more dangerous and harder to contain shitloads of gas spewing into the atmosphere? Is the seller full of shit? If not, how is this safer than a valve that automatically closes and then reopens at a predetermined PSI? Thx.