I received my NOS PVC valve (AC-469) today. The threads on the inlet side are 1/4” male NPT and the outlet is 11/16”-18 female inverted flare. Thus the reason for this post.
I pictured buying a few adaptors and installing CuNi tubing to make the connection. Well that seems to be much easier said than done, as “No1300” found out, and I am finding out…...
So I ended up buying a 13/16” inverted flare to 6AN fitting and turning off the 6AN side. I drilled and taped that side out for 1/4” female NPT. I ended up shortening a 1/4” pipe tap to get more and deeper threads due to the short 13/16” inverted flare adaptor. I Also bought two 1/4” male NPT to 3/8” inverted flare adaptors and a 4’ length of 3/8” CuNi tubing with pre flared ends.
The 13/16” inverted flare screws directly into the PCV valve, the 1/4” to 3/8” tubing adaptor screws into the fitting I altered then the tubing attaches to that. The manifold end has an existing female 1/4” NPT Tee that screws into the manifold, so the other end of the tubing and adaptor will go there. Unfortunately, My tubing bender only goes to 5/16”, so I need to buy another larger one. My “not so” local HF was out of stock, so I am stalled waiting until I can buy one. Hopefully tomorrow then I can Install my new system.
In the meantime, I assembled the fittings and PCV valve, cleaned up the assembly then painted it with my favorite rattle can satin black.
