150 class flanges are good to like 600 PSI. I don’t know about 150 class threaded couplings, but I would expect about the same thing. Lots of people use galv couplings.
I have been very naïve. Only recently did I find out the pump industry classifies the CSV as a “disruptive productâ€. In the same way the invention of the refrigerator was a disruptive product for the icehouse industry, the automobile was a disruptive product for the horse and buggy industry, the computer closed down the typewriter industry, and the digital camera caused the destruction of the film industry, the CSV is disruptive to the pump industry.
The CSV makes pumps last longer, use smaller pressure tanks, and eliminates multiple other pump system problems. Therefore, only the most intelligent, honest, and reputable pump professionals use Cycle Stop Valves. All others will do or say anything they can to discredit the idea, as they see the CSV as a threat to their livelihood.
Pump/motor companies advertise features that make their pump better than the other guys. But when offered a real solution to make pumps last longer (the CSV), they want nothing to do with it. They spend the most money marketing products that make them the most profit (big tanks and VFD’s), not what is best for the end user. This proves all the “my pump is better than your pump†marketing is nothing but hype. Nobody really makes a “good†pump anymore, they just want you think they do. Manufacturers go to a lot of trouble designing in a “fail by date†for pumps, and the CSV shoots that in the foot.
Many people in the pump industry will say the CSV “destroys pumps, waste energy, even blows up pipe, to dissuade people from installing one. Thank goodness some people see through the hype, and even come back many years later and confirm it was hype. My real name is Cary, and thanks to people like you, I have made a fair living fighting the good fight for Cycle Stop Valves for almost 20 years now. However, I don’t see retiring to Antigua anytime soon. I just hope years from now, when I am dead and gone, that even cheaply made pumps will last a long time, because they all come with a version of a Cycle Stop Valve built right into the pump. Of course that means common sense will have struck down corporate deceit and government incompetence, so you may see pigs fly first.