AF Valve FPS

Did a little testing for you guys today. Took the brand new stock high flow valve and took it from stock to different stages of modding. All testing was done with my Logun S-16 tank because it is smaller and I don’t waste as much air when I have to pull the valve.

.25
.072″ stainless hammer spring
100 gr hammer
P/W-0
.100″ tophat
3000 psi fill
43 gr eunjins

Stock
986
979
972

Tapered delrin seat
995
988
974

Slightly modded stem
1040
1023
1013

Highly modded stem
1050
1040
1024

6 ring
927
913
897

7 ring
884
864
847

I went and tapered the hole in the spring retainer and put in a longer shofter spring with less coils and it didn’t seem to change anything. I extremly ported the stem and it seems like I lost a few fps. Only way to get more is larger stem with larger hole.