Patent ID: 7520275

Claim:
A valve assembly for paintball guns, comprising an end cap; a low-pressure ram chamber having at least two ports spaced distally from each other and each operative to allow gas to pass through; a ram having a ram head and seal dividing said low-pressure ram chamber into a first and a second low-pressure enclosure, said first low-pressure enclosure in communication with a first one of said at least two ports and said second low-pressure enclosure in communication with a second one of said at least two ports, said first port isolated from said second port; a bolt coupled for relative movement with said ram and having at least one hole penetrating longitudinally through said bolt, and a plurality of seals cooperative with a gun barrel and feed neck to seal said feed neck from a blast of high pressure gas during gun firing; a volumizer having a high pressure inlet to a volumizer enclosure, at least one flow port coupling an exterior of said volumizer to said at least one hole penetrating through said bolt; a high pressure valve controlling flow from said volumizer enclosure to said flow port; each of said end cap, low-pressure ram chamber, ram, bolt, volumizer and valve constrained within said valve assembly such that said valve assembly remains a single integrated unit not only during normal operation but also during removal from and insertion into a gun body, wherein said ram further comprises a longitudinally extensive body of a first diameter throughout at least a majority of said longitudinal extension, said longitudinally extensive body passing through said low pressure ram chamber and said valve.