1/2 L copper has the same outer diameter as 1/2 K or M copper. The same applies to pipe schedules. As a result, a slight increase in pressure losses is realized due to a decrease in flowpath as wall thickness is increased. In other words, 1 foot of 1/2 L copper has slightly less volume than 1 foot of 1/2 M copper.
Definition of omega. 1  1 : the 24th and last letter of the Greek alphabet â see alphabet table. 2  2 : the extreme or final part : end.
Traditionally, there are alpha, beta, and omega wolves. The alphas are at the top, betas in the middle, and omegas at the bottom of the pecking order. The rest of the pack picks on omega(s). The omega role is more pronounced in captive packs where that individual can not disperse and is forced to live with the pack.