The Festo SRBC-CA3-YR90-MW-22A-1W-C2P20 is a limit switch sensor box built for pneumatically actuated process valves. IP67 means the housing and seals take a direct hose-down without letting water in — fine for washdown zones in food, beverage, or chemical lines. The die-cast aluminium body handles the mechanical abuse a valve actuator sees cycle after cycle.
Rated at 30 VDC and 250 VAC, so it handles both control-voltage and low-power AC valve circuits from the same box. At 126 mm wide, 134 mm tall, and 121 mm deep, it's sized to mount directly on the actuator yoke — no extra bracket needed if the valve has the standard NAMUR interface.
Marked as current production, so this is the active Festo part for the application — no looming last-time-buy to worry about.