Check the dust-cap in the ad. Did that one have the spare o-ring inside?
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BTW Service kits are available here: Store | Vintage Double HoseThank you both. Maybe a winter project.
One of the 109 I am using regularly was bought in 1975. However I use a more recent MKV first stage (year 1978), as the original one has just 2 LP ports, and the modern ones have 5.I also occasionally dive my MK5/R109 I bought in 1972, a fine regulator
I had mine upgraded along the lineOne of the 109 I am using regularly was bought in 1975. However I use a more recent MKV first stage (year 1978), as the original one has just 2 LP ports, and the modern ones have 5.