Where are the PST E8-130 or E8- 149s?

[StSomewhere]

Same psi at less displacement means less gas, right?

 

[trob09]

Same psi at less displacement means less gas, right?

Not necessarily. I am using displacement to denote the amount of water that the tank will 'move out of the way' when it is submerged. This is different than capacity - how much the tank will hold.

While they are related to some degree, there is not an exact relationship between displacement and capacity. Things like wall thickness and material will drive the difference between capacity and displacement. An AL 80 and a steel 80 have the same capacity but different displacement figures (more or less..). The PST and Worthington tanks would be similar to this difference, but to a smaller degree.

Same PSI at less _capacity_ means less gas. The same PSI at the same capacity with different displacement means the same amount of gas but with different buoyancy characteristics.

 

[Leadking]

It is unfair to catagorize Sea Pearls and XS Scuba in the same realm with other cylinder manufacturers. Sea Pearls and XS Scuba WILL deliver Worthington HP cylinders. WE HAVE the steel. All we are waiting for is DOT/TC approval.

The spec's are from drawings and will be updated as soon as we get them. LP cylinders are done and shipping mid February. I will answer any questions regarding Worthington Cylinders.

 

[StSomewhere]

It is unfair to catagorize Sea Pearls and XS Scuba in the same realm with other cylinder manufacturers. Sea Pearls and XS Scuba WILL deliver Worthington HP cylinders. WE HAVE the steel. All we are waiting for is DOT/TC approval.

The spec's are from drawings and will be updated as soon as we get them. LP cylinders are done and shipping mid February. I will answer any questions regarding Worthington Cylinders.

Leadking, no insult intended. I guess wasting hours on end trying to find PSTs has made me cynical, bitter, and untrusting.

 

[Leadking]

I just received from Worthington the final weights on our first production run of low pressure cylinders. The mean averages for cylinder weight are as follows:

85 cf 34.3 lb
95 cf 40.3 lb
108 cf 43.9 lb
121 cf 47.9 lb

all weights are without valve.

We will be updating our website http://www.seapearls.com/tanks-steel.html as we continue to develop the data.

Lee Selisky

 

[Mitten Diver]

I will answer any questions regarding Worthington Cylinders.

Leadking,

Any idea on pricing of these bad boys?

Mitten Diver

 

[Sapper]

What are the differences between High pressure and Low pressure tanks

 

[teknitroxdiver]

Just what the name implies. HP tanks are full at 3500 psi, LP tanks are full at 2600 or so.

 

[Leadking]

Leadking,

Any idea on pricing of these bad boys?

Mitten Diver

I expect the pricing to be fluid. With Sea Pearls and XS Scuba launching Worthington Cylinders, Blue Steel (Faber) coming to market with HP steel along with PST and now Norris is making a run at it too. We are currenly not issueing pricing in these market conditions-why give everyone else a target to shoot at. I can assure the industry that we will be competitive where ever the market goes.

 

[Leadking]

What are the differences between High pressure and Low pressure tanks

About 800 psi. The answer is that some high Pressure cylinders are made from 3AA steel (a DOT approved material) others are made from higher strength alloy steel (that allows for thinner wall thickness and a lighter cylinder) that is not a DOT standard and must go through a more rigorous testing and approval process. This additional testing must be done during manufacturing and through destructive testing of the finished product. Upon approval from DOT these cylinders are granted an exemption (E-9791 in the case of PST). This exemption is monitored for safety and must be renewed by the manufacturer every two years. Production for each lot of exempt cylinders cannot be more than 200 finished cylinders, other than those used for destructive testing (each lot must be tested). Because of the higher cost of steel and testing requirements these cylinders are sold at a premium.

Lee