My problem is that I cant valve it off and hold a vacum using jb micron.guage
Have never heard of nylog...
Hook the micron gauge to an empty recovery cylinder and evacuate THAT.
You are dealing with a very small volume and ANY leakage will drive you batty.
Increase the volume and you should see an improvement.
You ever see that dinky gasket they use in a JB DVN 222 N?
Cripe, if you don't have a 1/4" flare plug in the connection it will fall out.
Don't get the logic of the connection they use at all. The gauge connection is female flare and relies on metal to metal contact and the gasket is just insurance.
Really should redesign it.
Blu Vac connection is awesome...no guessing if the connection is right.
traced it with silver sharpie and used a box cutter to cut the foam
How much faster would vacuum go if I changed my 3/8 vacuum port on my pump to 1/2" and used a 1/2 tee instead if 3/8 and ordered my Appion 1/2" hoses with 1/2 connection instead of the standard 3/8" connection???
My understanding is that the fitting size isn't as important as hose diameter.