because that regulator is the one most likely to fail. shutting that isolator first is just wasting gas IMO.
or saving half your gas in the worst case.....
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
because that regulator is the one most likely to fail. shutting that isolator first is just wasting gas IMO.