• 4040 Solenoid Valve for Aprilaire Humidifiers 24V 1/4"

      Up for Sale is a Solenoid Valve for Aprilaire Humidifiers, stock # 4040. This Item is Brand New & Unused. The valve is rated 24 Volts A/C, has 1/4" threaded compressions ends on both sides. Valve body is made of Brass and has a 3/32" orifice. Inlet and outlet ports are reversible to fit a wider variety of humidifiers. Mounting bracket holes mea ...  More $31.95
    • Replacement Aprilaire 4040 Humidifier Solenoid Valve

      Replacement humidifier solenoid for Aprilaire models 220, 224, 400, 440, 550, 550A, 558, 560, 560A, 568, 600, 760, 760A, 768, and 700. This valve operates on 24V. This is manufactured by BestAir Pro to fit Aprilaire humidifiers. Climate Doctors offers products that may require professional installation. Climate Doctors recommends hiring a HVAC/R pr ...  More $34.88
    • OEM 4040 AP-4040 Aprilaire Humidifier Water Solenoid Valve A2012-S118 24/60 VAC

      This is a BRAND NEW OEM 24 Volt Aprilaire Humidifier Water Solenoid Valve. Aprilaire part # 4040 (or AP-4040) and the Valve # is A2012-S118. The #4040 soleniod valve includes a new inline strainer (pre-inserted in inlet side of valve), and a compression nut & washer for the inlet side only. Thanks for looking and good luck! Visit our eBay Store ...  More $55.85
    • Universal Aprilaire General Humidifier Water Solenoid Valve 4040 AP-4040 990-53

      This is a BRAND NEW Universal 24 Volt Humidifier Water Solenoid Valve. It Replaces Aprilaire part # 4040 (or AP-4040 and General part # 990-53. Thanks for looking and good luck! Visit our eBay Store: NorthAmericaHVAC This Item is used in Aprilaire Humidifier Models: 20, 224, 400, 440, 500, 550, 558, 560, 568, 600, 700, 760, 768 On Mar-28-12 at 18:0 ...  More $49.99
    • Aprilaire / Generalaire 4040 Humidifier Solenoid Valve

      Aprilaire / Generalaire 4040 Humidifier Solenoid Valve Product Description Aprilaire part numbers 4040, 4040-RR, 4040RR Fits Aprilaire models 110, 112, 220, 224, 440, 550, 550A, 550-A,558, 560, 560A, 560-A, 568, 600, 760, 760A, 760-A, 768, 700. Fits Some 350, 360 Models That Use 24/60 Volt Solenoid Valves. If it uses a 12 Volt Solenoid, then this v ...  More $34.65
    • Aprilaire 4040 Generalaire Humidifier 24v Water Solenoid Valve- 3 Pack

      Aprilaire 4040 Generalaire Humidifier 24v Water Solenoid Valve- 3 Pack Product Description Aprilaire part numbers 4040, 4040-RR, 4040RR Fits Aprilaire models 110, 112, 220, 224, 440, 550, 550A, 550-A,558, 560, 560A, 560-A, 568, 600, 760, 760A, 760-A, 768, 700. Fits Some 350, 360 Models That Use 24/60 Volt Solenoid Valves. If it uses a 12 Volt Solen ...  More $95.56
    • Good used Aprilaire 4040 24 volt solenoid+ plus feed tube

      $39.0
    • APRILAIRE 4040 Humidifier 24V Water Solenoid Valve for Model 220 224

      $29.99
    • APRILAIRE 4040 WATER SOLENOID VALVE 24 VOLT

      $43.95
    • 4040 SOLENOID

      $40.0