Reddit reviews Dixon Valve & Coupling D04 Brass Air Hose Fitting, External Drain Cock, 1/4" NPT Male
We found 1 Reddit comments about Dixon Valve & Coupling D04 Brass Air Hose Fitting, External Drain Cock, 1/4" NPT Male. Here are the top ones, ranked by their Reddit score.
External drain fitting for air and water serviceBrass for corrosion resistance, ductility at high temperatures, and low magnetic permeability1/4" male NPT inlet connection150 psi maximum working pressure at 70 degrees F
This is basically what I used for the air valve: https://www.amazon.com/Dixon-D04-Brass-Fitting-External/dp/B00835W23M/ref=mp_s_a_1_60?ie=UTF8&qid=1550117363&sr=8-60&pi=AC_SX236_SY340_QL65&keywords=brass+air+valve+threaded&dpPl=1&dpID=51k7LZz4hgL&ref=plSrch
The top is just a brass male barb that happened to fit a piece of silicone hose I had laying around.