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.
Introduction. Omega-3 fatty acids (omega-3s) are a group of polyunsaturated fatty acids that are important for a number of functions in the body. Some types of omega-3s are found in foods such as fatty fish and shellfish. Another type is found in some vegetable oils.Omega-3s are also available as dietary supplements. Fish liver oils, such as cod liver oil, are not the same as fish oil. 2  Fish liver oils contain vitamins A and D as well as omega-3 fatty acids. 3  Both of these vitamins can be toxic in large doses. 4  The amounts of vitamins in fish liver oil supplements vary from one product to another.