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Some regulators are designed for less than 150PSI so you have to be careful with them since depending upon the setting of the regulator both the K250 and K350 can come close to over diving the regulator if it is placed inside the cabin. The K600 uses a pressure manifold very similar to and Oxy/Acetylene setup which allows infinite setting of the outflow pressure. It is modified with a yoke so it attaches directly onto a scuba tank. On 12/28/2011 12:40 PM, vbra676539@aol.com wrote: He ran all his air through a first stage scuba regulator mounted internally. About the max you can wring out of one of those is 150 psi. Moreover, they do not provide a big flow, even at that pressure. You'll be a lot happier with full high pressure. And safer at depth. The only time I have seen regulated air work successfully was on the Johnson Sea-Link variable tanks, and they used SS regulators mounted outside so that they provided the same amount of pressure over ambient. That worked just fine, but the regulators cost $1K/each. Ouch. |