ESP Universal Humidifier Solenoid Valve 24 V Direct Aprilaire 4040 Replacement

ESP Universal Humidifier Solenoid 24 V 1/4 x 1/4 

This is the #1 humidifier solenoid replacement on the market. 

Flow can be reversed by removing two screws and turning the solenoid 180 degrees.

Directly replaces the Aprilaire 4040, and 100's of other units with a fitting changeout.  

This universal humidifier solenoid replaces 99% of all humidifier solenoids out in the field including:  

DROP IN FOR:Aprilaire # 4040 

Skuttle # A01-0814-148 

Carrier # 4357

WHEN REPLACING THE FOLLOWING: use one of the original fittings 

General # 990-53 

Honeywell # 32001639-002