This is a “manufactured under license for” Ss Brewtech. The literature and such are all Ss right down to the last bit of packaging. That being said there are some quality control issues that I needed to work around. The pressure relief valve and pressure gauge that came with the tank did not seat correctly and despite application of gaskets and torque I finally had to run a heavy bead of extra strong silicone around the items to get the tank to hold pressure. When using the jacket and coil I can drop temperature of the tank down to 40 degrees easily in a room temperature room. If you want to go colder it’s all about location .

All of our stock is of the new and current design of these caps.

Hi Doug - The Prop 65 warning is a California state law that requires businesses with 10 or more employees to provide reasonable warning about the use of any chemicals the state has decided could cause cancer birth defects or other reproductive harm. You'll find a Prop 65 warning on just about everything including coffee lumber oxygen sunglasses etc. If you have any specific questions about the manufacturing process for this item please email us at info@moreflavor.com.