Humidifier Water Solenoid Valve 4040 for Aprilaire Whole House Humidifier 400...
24 Volts; 2.3 Watts; 60 HZ-10006735. EASY TO INSTALL: This humidifier solenoid valve 4040 is easy to install,You only need a screwdriver and wrench to perform repairs. Model number: 4040. Step 4: reconnect the humidifier.