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KC4500-01 Vernatherm Freeze Protection Valve 45F Discharge 0.50 Inch *OUT OF STOCK*
   Model: KC4500-01
KC4500-01 Vernatherm Freeze Protection Valve 45F Discharge 0.50 Inch *OUT OF STOCK*
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    Vernatherm Freeze Protection ValveVernatherm Freeze Protection Valve Model KC4500-01, 45F Discharge


    WARNING: See critical warning below relating to proper selection of valve model related to application.

    Keep your solar collectors and exposed pipes from freezing with the Vernatherm solar freeze protection valve

    The Vernatherm valve contains a thermal actuator that opens the valve when the temperature approaches freezing and re-closes it upon warm up. This is a continuous process of modulation; cold water is discharged and replaced by warmer water preventing panel and piping freeze up.

    This valve features a patented anti-seize feature which ensures longevity and durability you can depend on, through the years this valve will not seize due to corrosion, and will continue to function.

    Freeze protection valves use reliable, non-electric, self-contained paraffin wax motors (thermal actuators) which automatically respond to temperature fluctuations. Usually in freeze protection applications, the valve port opens on temperature drop, allowing liquid that would normally freeze to be discharged and replaced with warmer fluid within the system.  When warmer temperatures are detected by the thermal actuator within, the valve will automatically close the valve and the discharge cycle stops.

    This cycle will repeat as often as necessary to prevent freezing.  The amount of fluid discharged depends on ambient air temperature, and fluid temperature.  The system is functioning properly when fluid is being discharged from the valve in near freezing conditions. The Vernatherm valves features sets these valves apart from the competition!

    Product Features
    ˝" Male NPT Fitting
    Anti-seize feature ensures longevity and durability
    Anti-insect design prevents any insect from making this valve
       its home and causing a failure
     Compact design for easy install - weighs only 4oz
    UV resistant body material
    Stainless steel inlet debris screen
    Discharge temperature set to 45F
    Internal filter screen
    FDA and NSF listed materials
    100 psi maximum operating pressure
    Complete mechanical operation
    Tamper resistant design
    Corrosion resistant materials
    Non-electric function

    Product Application: Solar Domestic Water Heating System

    Product Function:
    Protects solar collectors and exposed piping from freezing


    HELP » Contact Customer Support
    Toll-Free help line offering product info and ordering support
    Online e-mail technical and installation support

    A typical solar domestic water heating system components and layout is shown below.


    Download » Vernatherm Valve Data Sheet

    NOTE: During cold weather, it is normal for the valve to dispense water from its discharge port even when ambient air temperatures are several degrees above freezing.


    Product Warranty: 1 Year Manufacturer Warranty

    Product Manufacturer: Rostra Vernatherm, LLC

    WARNING: Solar collectors can reach internal temperatures up to 10 degrees below the outside ambient air temperature. Standard Active Open Loop Solar Systems typically require a 45F valve to ensure proper protection. Passive Batch or Integrated Collector Storage (ICS) systems such as the ProgressivTube have a much larger volume and mass of stored water, and will not freeze as quickly as a Active Open Loop Solar System, therefore they can typically utilize a 35F valve.

    This condition results from a phenomenon known as "night-sky emissivity". The emissivity of a material is the ratio of energy radiated by the material (solar panel) to energy radiated (or absorbed) by a black body (the sky); it is a measure of a material's ability to absorb and radiate energy.

    Since solar collectors are coated with a black surface they are very good at conducting and emitting energy. When the outside temperature approaches freezing, the surface of the solar collector begins to emit energy to the night sky. When the atmosphere is clear with no clouds, the transfer of energy is accelerated.

    In layman terms, this means that on a cold clear night, the water in the solar panel can be up to 10 degrees colder than the outside temperature. A Freeze Protection Valve needs to begin opening when the outside temperature drops to 42 degrees and below. As the temperature drops from 42 to 32 the volume of water discharged from the valve increases.

    Consult the owner's manual of your collector and/or system to determine the correct valve model to use; Solar Direct and/or The Energy Supermarket makes no claim as to the correct valve to use, and/or its usage and application; and assumes no liability for damages resulting from correct or incorrect use of this product.

    WARNING: Do not expose valves to temperatures above 300F (148.8c) as this may damage the valve.

    Processing and Delivery Information: Please allow Processing Time as stated above for your order, plus standard transportation delivery time. Orders placed after 2PM EST may not begin processing until the next business day. Please call for Rush Processing and/or Rush Shipping options.

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