A versatile valve that will never clog. For the most dependable drain, install the MDV-400. The MDV-400 consists of a heavy duty electric actuator, an integral adjustable timer, and a full ported ball valve. The MDV-400 manages virtually any fluid in a variety of applications, including compressed air condensate, cooling tower filters, and separators. The MDV-400 is available in two models.

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MDV-400I - For dependable draining at consistent intervals choose the “I” version. A power on LED and test button are located on the exterior of the top cover. The adjustable valve cycle controls are protected within the enclosure. The MDV-400I is suitable for indoor or outdoor service.

MDV-400L - For real time operating status and quick adjustments to the valve cycle time choose the “L” version. An external LCD display and keypad makes changing the valve actuation intervals easy. You’ll never wonder when the valve is going to actuate, with a clear countdown display. The MDV-400L is suitable for indoor service only. For on demand actuation wire the MDV-400 to a level switch or differential pressure switch.

MDV-400 drain valves are ideal for:

• Moisture Separator 
• Sediment filter back washing 
• Compressor intercoolers 
• Receiver tanks 
• Drop legs 
• Coalescing filters 
• Compressed air dryers

Model Part No. Voltage Conn. (In.) Valve Body MAWP PSIG
MDV-400I 39-2211121 115-1-50/60 1/2 NPT Brass 600
MDV-400I 39-2311121 115-1-50/60 3/4 NPT Brass 600
MDV-400I 39-2411121 115-1-50/60 1 NPT Brass 600
MDV-400I 39-3211121 115-1-50/60 1/2 NPT Stainless 900
MDV-400I 39-3311121 115-1-50/60 3/4 NPT Stainless 900
MDV-400I 39-3411121 115-1-50/60 1 NPT Stainless 900
MDV-400L 39-2211111 115-1-50/60 1/2 NPT Brass 600
MDV-400L 39-2311111 115-1-50/60 3/4 NPT Brass 600
MDV-400L 39-2411111 115-1-50/60 1 NPT Brass 600
MDV-400L 39-3211111 115-1-50/60 1/2 NPT Stainless 900
MDV-400L 39-3311111 115-1-50/60 3/4 NPT Stainless 900
MDV-400L 39-3411111 115-1-50/60 1 NPT Stainless 900