Ex nihilo is a Latin phrase meaning out of nothing,â which often appears in conjunction with the concept of creation, as in creatio ex nihilo, meaning creation out of nothing.â Not only do scientists think the Universe was created out of nothing, or that nothing existed before the singularity, but even Creationists, those who believe God created ...
There are two main categories of diaphragm valves: one type seals over a weir (saddle) and the other (sometimes called a full bore or straight-way valve) seals over a seat.
Diaphragms come in different sizes and designs. This increases your chances of finding one that is a good fit for you. A flat ring option: This type of diaphragm can be squeezed into a flat oval before being inserted. The flat ring type has a thinner rim.