Northrop Grumman supplies both monolithic titanium and composite overwrapped pressure vessels (COPV) for pressurant gases. Several models of vessels are qualified for use in high-pressure gas applications, such as Xenon, Nitrogen and Helium tanks. Northrop Grumman's pressurant tanks have been utilized on both satellites and launch vehicles, with some launch vehicles utilizing as many as 13 Northrop Grumman high-pressure Helium tanks.