That really helped me out. I am going to get some Milton 1855 now. 1/2" hose for everything, and high-flow G-style fittings for everything. THANK YOU!!!
I have been experimenting with hose diameter and inlet hose fittings. Like night and day going to a high flow fitting. On a impact wrench or air hammer I was recording twice the power with the right combination compared to most that use a undersize hose and low flow fittings. Good vid bud.
It deff makes a difference, and I like for every tool I pick up to have the same fitting, I don't like having 3 sizes of air hose and fittings in a shop lol
not sure the difference in cfm but i would size everything to the air tool with the most air usage which is what i did. I use a 1" impact sometimes so I sized my air supply and fittings to run everything so I don't have multiple fittings and hoses. I would think a 1/2" Impact would benefit from a 3/8 fitting but if you're not having any problems removing any bolts are anything it might not be worth the trouble and 1/4" fittings might be fine, I used 1/4" fittings for years with most my air tools but 3/4 and 1" impacts require alot more air.
chase5726 Hey, from what I understand, Hi-Flo 1/4 ones are 79 CFM. The 3/8 end with 1/4NPT thread is also about 79CFM. Yours are 20CFM more. My impacts and tools are all 1/2inch. Dam, 1 impact lol. Yours are also 1/4NPT, but I need 1/2 hose then with that G style coupler. I work on my car occasionally and have no problem at all. I just bought all 3/8 with 1/4 NPT ends and probably wasted money lol since the HI-Flow 1/4 flow the just about the same as regular 3/8 fitting. I need to get into tight places, I’m not sure having a 1/2 hoes will be ok. What do you think about all this?
Sometimes i wish i live in the USA. I like my country and all, but importers and sellers are a bit cheap in the selection of their products. I have had a hard time looking for 1/2" or 3/8" coupler and anything related to those sizes.
Basically there are 3 sizes in pneumatic tools 1/4, 3/8, and 1/2" air fittings/lines. The larger the diameter the greater volume of air that can be used. The 1/4" NPT means the fitting fits an industry standard 1/4" National Pipe Thread fitting, not necessarily that it's 1/4" in diameter. V Fittings are 1/4 NPT fittings with a 3/8" capability (inside diameter). G fittings are 1/4" NPT fittings that are suppose to have the capacity of a 1/2". Although I think the 1/4" G fittings are designed to simply fit the g plugs.
If you look inside a regular 1/4 NPT fitting, you will see the ID gets choked down to a smaller ID at the fitting end. High flow fitting has the same ID all the way through. It also means the coupler and fitting needs to be bigger than a regular 1/4 quick connect fitting. HF has 1/4 NPT fittings with 3/8 body. It likely will flow similar amount of air. Air flow is directly related to cross section area of the circle at the same pressure. Area of a circle = π X r2. Doubling the diameter/radius quadruples the surface area. Thus the reason for such drastic increase of volume in air from small increase in ID.
I just learned recently. In laymen speak, the plug does not change neither does the coupler of a fitting regardless if it has 1/4, 3/8 or 1/2 thread. If you need it to attach to a 3/8 male hose thread get a female 3/8” G style fitting , if you are putting it on a 1/4” get a 1/4”. Simple. 1/4” male G style will fit on a tool with a 1/4” female NPT. Your tool is the choke point so keep don’t neck down until the end.
