Adapter1/4"Mptxne St Acme Inlet (Discontinued)

1/4" mpt x new style acme inlet green 71-200,000 btu, quick closing coupling. the new acme or qcc valve also contains an opd (overfill protection device). So you may find them called acme valves, opd valves or qcc valves, depending on the supplier. The opd an internal float mechanism shuts off the valve when the propane tank is 80% filled. the 20% empty space is necessary to prevent the cylinder from venting large amounts of propane when the temperature rises.