The current generation Blitzluft valve is the latest evolution in a line of valves known for reliability, speed, and low price, and they just keep getting better!  Here's the specs:

-280 psi Max. Pressure (we like to rate our valves very conservatively- these have been proven to hold over 380 psi!)

-4.5 cv Flow Rating

-1 Year Warranty

-Fully Rebuildable

Each BlackJack valve comes with an electrical plug for a weather-tight connection.