A valve I knocked up this afternoon

Well guys, I was originally using a modified talon valve with an 18″ barrel and was getting the 15.9 grain JSB’s up to about 950 fps. I was looking for a little more so I could shoot the kodiaks at a reasonable velocity.

I reamed out the brass threaded stem surround to just under the seat diameter and made a high flow valve to fit.

The ID of the valve is 4mm and not sure of the OD.

Two flats were milled on each side to expose the ports.

With the tank pumped to 3000 psi, I was getting consistant hight 800’s.

Dry fired a bunch of times and got 980 fps

Dry fired a few more times and got 1020, took a few more shots over the chrono and got 1021, 1025, 1032

Fired off a few more and got 1070, then after about 2 more shots I got 1086

This PSI reading was about 2400 psi

I plan on doing a full string tomorow, starting at about 2600

PICS