CGA 200 Inlet Nut and Nipple with Filter 7/16-20UNF connection. For Acetylene regulators with a 7/16-20UNF connection. This nut and nipple is fo the New Style of Uniweld R-MC regulators only
The New Style has the seat assemble (parts #4 and 5) that is accessed through the rear of the regulator through the nipple as pictured in the breakdown.
Regulator pictured in breakdown is a R-B and is for reference only.