Check the listing for details. Aprilaire 4040 Solenoid Valve Humidifier 24V Orifice Strainer Included. Condition: New. Listed at 21.35 USD. Replacement For: Aprilaire 4040 24 Volt SOLENOID VALVE NOTE:The Replacement Valve Strainer and Orifice are Included and installed in the brass fittings! Other Listings on eBay the sellers do notinclude the valve strainer and orifice in the brass fitting! The replacement 24 volt valve for Aprilaire models and works great on other manufacturers humidifier! #4040 APRILAIRE HUMIDIFIER WATER VALVE FOR APRILAIRE MODELS: This is the kit for replacing defective AprilaireHumidifier Water Valve. This is a REPLACEMENT Kit FOR Part #4040. This will work for the following Models: 220,224,350,360,400,440500,550,550A,558,560,560A568,600,700,760,760A,768,900, 950, 1000. Also Replaces: General Filters,Generalaire, Skuttle Autoflo,Humidiare,Hamilton,LennoxCarrier, Bryant THIS ITEM IS IN STOCK FOR IMMEDIATE SHIPMENT!