Vessel with high pressure feedthru

Pressurizable vessel comprising

• (a) housing wall means defining a chamber,
• (b) a closure means for said housing wall means, said closure having a low pressure outside surface and a high pressure inside surface, said closure means having at least one opening therethrough for at least one connector means, and at least one additional opening therethrough for connection to a source of pressurizing fluid,
• (c) connector means being separate from and non-integral with but attachable to and detachable from said closure at or through said inside surface, said connector means comprising
• (aa) at least one conductor through said connector means to establish a connection between the chamber and an area outside of the chamber, said conductor being hermetically sealed in said connector means to prevent fluid flow through said connector means around said conductor,
• (bb) sealing means for fluid tight, non-integral sealing of said connector means at or through said inside surface of said closure means,
• (cc) holding means for holding said connector means in tight but non-integral connection with said closure means,
• (d) an O-ring between the closure means and the inside of the housing wall means for a fluid tight, non-integral seal.