Sure "it" can be used in all those constructions and Some others, but soem in the illustrations could use changes. For an electric pump rocket engine such as rutherford engine, can it be probable to place the principle valve upstream with the pump? Stack Trade community contains 183 Q&A communities https://petskyonline-onlinestrore.blogspot.com/2025/07/top-10-aquarium-essentials-for-new-fish.html