Waterway Whirlpool Jet Internal [5" FD] [Non Adjustable] [Dir] [Smooth Face] [Gray SS] (212 2037S) deltrolcontrols or no longer providing smooth or no longer providing smooth directional control Union style valves are useful because they can simplify service and future replacement work The smooth gray and stainless finish gives this Waterway part a refined surface appearance that works especially well in spas where the visible hardware is meant to look polished rather than purely functional this Waterway internal is a practical replacement when a 5 inch non adjustable directional insert in gray and stainless is needed