> why is this down-voted? You are responding with snark, on a topic on adapters for use in homes, with solutions that you yourself say are for "facilities abov

> why is this down-voted? You are responding with snark, on a topic on adapters for use in homes, with solutions that you yourself say are for "facilities above a certain size". Your post is off-topic, but you might very well have been upvoted if you had presented it in a more positive way, like talking about your prior experience machining valves for your own heating system. That would have been interesting.