Marshall Excelsior MEC female 1-5/16" POL x female 1"-20. If you want the best and safest gas connections, Marshall Excelsior is the brand you want. Lifetime warranty!! Warranty exchanges are instantly done by us. No dealing with the manufacturer.
This backup adapter valve lets you connect disposable 1-lb bottles to a standard pigtail or appliance hose when your large 11, 20, 30 or 40 lb propane tank runs dry.
To install, first connect the hose from your grail to the adapter, then connect the adapter to a disposable propane bottle.