I spoke with PST, they tell me that Thermo and Sherwood Manifold are the recommended choice for the PST HP tanks. Did you guys know that both these valve manufacturers have been around 70 years, and they are both U.S. Companies?
I think there is a lot more to this than opinions. Has anyone ever seen one fail? If not, maybe the judgement is getting just a little bit harsh since there is nothing factual to base it on. Besides, If I mentioned earlier, all the HP PST tanks come with the thermo valves as a standard from the factory, I think they have been like that for a long time already, which means a lot of recreational divers have them on their PST right nOW!
Hmmmm, interesting point isn't it?
Also the new style Thermo valves, single and double manifold now has the raised Sherwood type rubber knobs. I think I'm going to give PST the benefit of the doubt and look into a Thermo.
Heck the manufacturer of one of the most popular tech tanks (PST) is saying that Thermo is great, U.S. Made, parts easy to come by, and definitely not made in another country.. That says a lot!!!
I've never had a problem with my Thermo Valve that came on both my PST HP 100's. Good finish on them and they've been very reliable. Another point the manufacturer brought up was that when you turn the valve knob one full turn the pressurized air is already coming out full on, another half turn is not going to matter. Now if you look at this point logically, he's quite right. Since the tank is under great pressure, it wouldn't matter.