Intermatic Air Control Box [230v] [One Circuit] [On Off] (RC2112S) checkvalves Supports dependable automatic schedule advancement Supports dependable automatic schedule advancement A complete wet end replacement is especially appealing when the motor is still serviceable and the goal is to refresh the hydraulic side of the pump with a more thorough repair An air control box helps manage equipment operation in a compatible pneumatic control setup This part has practical value because the one circuit on off configuration offers a more focused solution for simpler controlled applications where multi function capability is not required