I know I've seen what I am looking for, but apparently I am not asking for the right item when I Google, because I can't find a manufacturer.
What I need is a modular type solenoid bank with 8 or 12 or 16 three way valves for controlling small air to open diaphragm valves. The manifold is a modular unit similar to the Festo CPV series, or Numatics 2002 series, where the valves and electronics are scewed together into a compact unit. What makes this item different from the Numatics 2002, is the 16 outputs (push to connect fittings) are on a face plate that is NEMA 4 rated and is mounted outside the control panel. The valve bodies and inlet/outlet air for the manifold and all electrical connections are inside the control box. (i.e. the manifold mounts just like a panel meter through a rectangular hole in the control panel box with a gasket) This saves considerable space in the panel box as there aren't 16 airlines running to 16 bulkhead fittings all jammed into the panel box.