Review on Manchester Tank S33250: Durable Plastic POL Plug for Propane Gas Tanks by Darrell Kiley

Read the reviews (most say it's bad) but there was one that worked (and great) with a Manchester 100# cylinder/valve worked). So figured others might not have Manchester tanks/valves. I have 3 other tanks/valves from Manchester so figured they would suit me fine. Not so. Same issue with cross-threads that others have reported. The worst thing is if you touch them most of the time they will catch on something and cause the valve to leak a little. I will turn back. and call manchester to find out what's going on between the 100# and 20# valves and see if they have a solution for 20#'s.