XS Scuba
Contributor
Hi PerroneFord:
As I stated in my prior post: They are no more safe or no more unsafe to pressurize beyond 2640 psi (2400+ psi) then any other 3AA 2400+ psi scuba cylinder.
None of the DOT3AA scuba cylinders are "overbuilt" beyond the DOT 3AA requirements. It is a myth that any manufacture's cylinders are actually "high pressure" cylinders with an underrated working pressure. Why would any manufacture do that? If that were the case, I would have the cylinders stamped with a higher working pressure (increasing the cylinder capacity and value) or use less steel & reduce my cost.
Is your argument, that your knowledge of past experience of overfilling is greater then the knowledge of DOT regarding safety margin and high pressure vessels? If that is the case why not grossly overfill 3AL (aluminum) cylinders? Why not grossly overfill cylinders with a DOT exemption? All scuba cylinders manufactured to meet DOT specifications have essentially the same safety margin.
My point is simple, we manufacture high pressure cylinders designed to meet the DOT requirements for a working pressure of 3442 psi. These are not low pressure cylinders which we have stamped with a higher working pressure. These cylinders are designed and manufactured with a high tensile steel alloy to meet the DOT requirements of 3442 psi. If you want a cylinder that is safe for high pressure, then purchase the cylinder that is designed for that purpose.
As I stated in my prior post: They are no more safe or no more unsafe to pressurize beyond 2640 psi (2400+ psi) then any other 3AA 2400+ psi scuba cylinder.
None of the DOT3AA scuba cylinders are "overbuilt" beyond the DOT 3AA requirements. It is a myth that any manufacture's cylinders are actually "high pressure" cylinders with an underrated working pressure. Why would any manufacture do that? If that were the case, I would have the cylinders stamped with a higher working pressure (increasing the cylinder capacity and value) or use less steel & reduce my cost.
Is your argument, that your knowledge of past experience of overfilling is greater then the knowledge of DOT regarding safety margin and high pressure vessels? If that is the case why not grossly overfill 3AL (aluminum) cylinders? Why not grossly overfill cylinders with a DOT exemption? All scuba cylinders manufactured to meet DOT specifications have essentially the same safety margin.
My point is simple, we manufacture high pressure cylinders designed to meet the DOT requirements for a working pressure of 3442 psi. These are not low pressure cylinders which we have stamped with a higher working pressure. These cylinders are designed and manufactured with a high tensile steel alloy to meet the DOT requirements of 3442 psi. If you want a cylinder that is safe for high pressure, then purchase the cylinder that is designed for that purpose.
PerroneFord:Would you characterize your cylinders as As safe, less safe, or more safe, than the Faber 3AA steel tanks that we have been overpressurizing for nearly 30 years? Are they equally as safe as the PST cylinders that people have been putting 3500-4000psi In since the 80s?
Since I intend to purchase some new LP cylinders this winter, I want to be sure that if I purcahse Worthington tanks, I am not getting an inferior product when I could purchase PSTs or Fabers.
Thank you.
-P