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.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  alpha(noun) the 1st letter of the Greek alphabet. 2  alpha(adj) the beginning of a series or sequence. the Alpha and Omega, the first and the last, the beginning and the end--Revelations. 3  alpha(adj) first in order of importance.