Bryan at VDH put together an interesting document explaining some of the history and mechanics of the ScubaPro 109 and Balanced Adjustable (156) second stages. The pdf file has tips on installing the poppet and seat assemblies correctly. Included are pictures of cutaway assemblies that will appeal to 109, BA, and G250 owners.
You can find it along with tons of other interesting files at Vintage Scuba - Vintage Scuba Gear at Vintage Double Hose -->Manuals and Catalogs-->ScubaPro schematics and parts list --> ScubaPro 109.pdf
Couv
You can find it along with tons of other interesting files at Vintage Scuba - Vintage Scuba Gear at Vintage Double Hose -->Manuals and Catalogs-->ScubaPro schematics and parts list --> ScubaPro 109.pdf
Couv
