The HA Series is a soft seated multi-valve manifold that allows you to connect one air/gas source to the inlet for distribution up to 12 separate work stations. If additional work stations are required, simply attach another HA06 with nipples. The HA Series is used in place of conventional methods for the distribution of plant air and purge gases and feature o-ring seals and backseated bonnets to insure against stem leakage when the valves are fully open.