Item #: 39-2311111
Availability: In Stock
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Retail: $1,015.00
Price: $850.00
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    Whether you need the simplicity of a basic valve or the flexibility of added features, the Sentinel Series is your solution. Choose from two models, plus different options to fit the level of adjustment and controls you need.

    For dependable draining at consistent intervals choose Sentinel model MDV-400I. A power on LED and test button are conveniently located on the top cover. To reset the valve, simply adjust the switches on the internal circuit board.

    If you prefer an easy-to-use keypad for convenient timing adjustments and a handy LCD cycle status readout, choose Sentinel model MDV-400L. You'll never wonder "when it's set to fire again" with its continuous, clear countdown display of the remaining cycle or drain open times. Added features include external test and valve fault functions, both with LCD readout.

    The Sentinel Series is also offered with a stainless steel valve, as well as several sizes and voltage options.

    Zero Loss with Demand Draining:
    For draining based on actual liquid levels, the Sentinel can operate in response to a liquid level sensor. When used as a demand drain, the Sentinel drains only liquid, eliminating air or gas loss and noise.

    Reliably Manage Any Fluid with Ease:
    For the most dependable, "round the clock" draining, install Van Air Sentinel Series drain valves.

    The Sentinel's heavy-duty ball valve can manage virtually any fluid in a wide variety of uses, including cooling towers, portable installations, process tanks, separators, compressed air dryers and general condensate management.

    With a high-quality, two-piece ball valve that resists clogging, the Sentinel provides maximum fluid flow and long-term reliability. Depend on it for nearly any fluid service.

    Standard Features & Specifications

    115 VAC 50/60 Hz
    10' power cord w/ plug
    Two-piece brass ball valve
    1/2", 3/4" or 1" NPT connection
    Thermoplastic top cover
    Epoxy powder coated metal base
    NEMA 4 enclosure

    Ambient temperature range:
    0° F to 120° F - MDV-400I
    10° F to 120° F - MDV-400L

    Maximum working pressure:
    Brass - 600 psig
    Stainless steel (optional) - 900 psig

    Model MDV-400I Drain Valve:
    Power on LED
    External test button
    Internal timing adjustment
    Demand draining capability
    Cycle time: from 30 min. to 30 hrs.
    Open time: 5, 10, 15 and 20 sec.

    Model MDV-400L Drain Valve:
    LCD cycle status display
    Demand draining capability
    External test button
    Cycle time: 1 min. to 99 hrs. 59 min.
    Open time: 1 sec. to 99 min. 59 sec.

    Drain Valve Options & Accessories

    12 VDC, 24 VDC, 230 VAC
    Brass Ball Valve: 1 1/2", 2", 2 1/2", and 3"
    Stainless Steel Ball Valve: 1 1/2" and 2"
    Alarm contact for remote indication of fault mode
    High liquid level sensor
    Low liquid level sensor

    Actuator w/ standardized ISO mounting pad sold separately.

    Valve Connection
    1/2 NPT 6.5 6.8 6.0 2.6 8.2
    3/4 NPT 6.7 6.8 6.0 3.0 8.4
    1 NPT 7.2 6.8 6.0 3.3 8.8

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