Tamas
Contributor
What 1st stage is this? Anyone know?
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
mdb:Chad has it right. The first stage pictured is the old TEKNA a clone of the SP MK V. The second stage was based on the Poseidon pilot valve design.