Legris

The Legris company produces the 90 degree elbows or "Legris elbows" that are used to build the proton pack. They are used, essentially, to connect the different colored hoses you see on the Proton Pack to anther area on the pack where the other end of the hose leads to. The Legris elbows used on the Proton Pack are all the same type and size, and appear throughout the overall pack, to connect the hoses. In some instances, you can see, from the reference photos, that one end of a hose connects to a legris elbow, and the other end connects to a hose barb fitting. The hose barb fittings are made by Clippard and are also known as "L-fittings". They are mentioned here because of the interconnected nature of the Legris elbows, to the hoses, to the Clippard fitting. In addition to the Clippard fittings, the mention of the hoses is essential to understanding of where the Legris elbows are located and what size they are. The hoses coming out of all of the Legris elbows are 5/32 fractional inch size, and so is the size of the Legris elbows. The other side of the elbow has a 1/2 inch thread or NPT, which is made of brass or steel. In the Legris catalog, the part number is 3109 desribed as male elbow- fractional inch tube to NPTF and the type used on the Proton Pack is on page F6. this is noted because under the part number 3109 there are different variations, but all of them will look close enough and fit the 5/32 hose. Look at the reference photos and you will know what you will need.