Nitrogen Regulator - Taprite
This is a brand new Taprite regulator.  It is quality made, most consistent and accurate regulator on the market! 
The regulator comes with a 5/16" Check Valve! 
This regulator will not loose pressure, even when your nitrogen level begins to get low, like some cheaper made regulators.  Regulator has a Ball type check valve, solid brass body with extra ling nipple, heavy duty UL rated gauges, and safety shut off safety system (which will blow off at 55 to 60 PSI). Plus this regulator has a permanent Quad Ring Seal, which eliminates the need for the plastic washer which goes in-between your regulator and CO2 Tank!