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Defender Central Heating Inhibitor 10L

875.93 875.93
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Defender Central Heating Inhibitor 10L

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Protect Hydronic heating and cooling piping and system components against corrosion and limescale.

875.93 875.93 875.9300000000001 NZD

687.00

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    Product Code:
    SSHTWM5T

    Product Features -  All pricing exclusive of GST

    • Protects clean systems against limescale and corrosion.
    • Suitable for mixed metal, and plastic commercial heating and closed cooling systems.
    • Essential to maintain efficiency and prolong the life of the system.
    • 10L size reduces waste.
    • Ideal for large and commercial systems too.
    • 10L dose rate is 0.5% of the system volume
    • Extremely competitively priced.
    • For use in accordance with BS7593:2006.
    • BuildCert Approved.




    • Technical Support
    • Express Shipping
    •  
    • 24/7 Web Ordering
    On Application

    The Defender Inhibitor is a water treatment formulation for water-based heating systems to protect piping and system components against corrosion and limescale. Defender Inhibitor is suitable for both hard and soft water types and is non-toxic and biodegradable.  Dosing with inhibitors and regular system maintenance are critical measures required to satisfy the terms of warranties provided by hot water heater and system component manufacturers.

    Typical water quality for Closed loop heating and chilled water systems:

    Parameter

    Limit

    Why

    Top-up water



    Conductivity

    1,000 µS/cm maximum

    To ensure system water values can be achieved

    Suspended Solids

    30 mg/l maximum

    To ensure harmful particles circulating in the system are minimized.

    System water



    pH range

    6.5 – 10.0 unless aluminium in the system, then 6.5 – 8.5


    Conductivity

    1,000 µS/cm, certain inhibitors may raise conductivity to 3,000 µS/cm max.


    Total Hardness (as CaCO3)

    Heat output <70kW

    10 – 350 mg/l

    To minimize scale

    Total Hardness (as CaCO3)

    Heat output 70 - 200 kW

    10 – 200 mg/l

    Higher heat flux increases the likelihood of scale formation

    Chloride (as Cl)

    150 mg/l maximum

    To prevent pitting

    Total iron (as Fe)

    15 mg/l maximum

    Indicator of corrosion

    Soluble iron (as Fe)

    3 mg/l maximum

    Indicator of corrosion control

    Soluble copper (as Cu)

    1 mg/l maximum

    Indicator of corrosion control. Copper also has the potential to induce pitting corrosion of other metals.

    Soluble Aluminum (as Al)

    1 mg/l maximum

    Indicator of corrosion control.

    Suspended Solids

    30 mg/l maximum

    From contamination or corrosion and can lead to system component fouling.