Patent ID: 7334598

Claim:
A pressure regulation device adaptable to a compressed gas cartridge capable of delivering a substantially consistent outlet pressure, comprising: a body comprising an externally threaded top portion and formed to include an internal piston bore, a negative vent interconnecting with said piston bore and extending outwardly through said body, a valve chamber extending inwardly through a bottom portion, and a plunger channel interconnecting said piston bore and said valve chamber; a lance housing disposed in said valve chamber and terminating with a cartridge-piercing lance and a deformable seal situated around said cartridge-piercing lance; a first spring disposed within said valve chamber and comprising a first end and a second end, wherein said first end of said first spring is in contact with said lance housing; a valve ball in contact with the second end of said first spring; a piston moveably disposed within said piston bore, wherein said piston is formed to include an exit conduit formed to include a lumen extending therethrough, wherein said lumen communicates with said plunger channel; a plunger extending downwardly from said piston and comprising a distal end, wherein said distal end contacts said valve ball; a cap rotatably and threadedly disposed around said top portion of said body; a second spring having a first end and a second end, wherein said first end of said second spring contacts said cap, and wherein said second end of said second spring urges said piston downwardly in said piston bore with a preload force such that said piston blocks said negative vent; wherein introduction of a back pressure into said piston bore greater than said preload force causes said piston to move upwardly thereby exposing said negative vent.