The NEW MEGA-ONE LA NHD is a pneumatically-actuated diaphragm valves for ultra-pure, flammable, or toxic fluid lines for all types of semiconductor equipment facilities. The direct diaphragm construction makes the NEW MEGA-ONE LA NHD an industry standard valve with superior sealing performance, remarkable durability and compactness, and particle- and dead-space-free performance. Technology developed through extensive experience has resulted in higher endurance and response.