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Fire Fighting Kits

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Big Water Tanks is first to bring to market the most efficient and most cost effective siphon fire coupling system.

Save Costly Valves

The only other system on the market at the moment costs $1000's with heavier tanks, and large expensive 100mm bsp fittings, hose and large valves

Our system uses a few standard DWV PVC Pipes, a rubber tank seal, a custom built adaptor from 100mm PVC to 100mm BSP and a FMJ fire Fitting

 

Fire Fighting Kits

  • Fire Tank Couplings

    In areas where reticulated water supply is unavailable or insufficient there is a requirement for alternative water sources for fire fighting purposes, Big Water Tanks is the first to bring to market the most efficient and most cost effective siphon fire coupling system.

    Large holes for fire couplings in bottom of fire tanks cause huge stresses in the plastic material at the bottom of the tank, our competition make heavier fire tanks to accommodate for these stresses based on FEA (Finite Element Analysis - Computer aided design) costing about $1000 more for of each tank. Our Unique system uses a siphon made from very cost effective PVC pipe with a PSL fire coupling made from precision machined in heat treated alloy.

    These adaptors fit the requirement as per the New Zealand Fire Service Fire Fighting Supplies Code of Practice SNZ PAS 4509:2008

     

    Freight on fire Kits only may not be calculated on the website correctly, please contact us should you need these shipped to you

  • Installation and Maintenance

    Single Tank installation
    Single Tank fire fighting Kit


    Single Tank fire fighting Kit
    Step 1

    Bury the capped end of the pipe about 300 - 500mm into solid ground.

    Single Tank fire fighting Kit Installation Step 1
    Step 2

    Next install a 100 mm inspection port (90 deg tee) with our custom 100mm BNext install a 100 mm inspection port (90 deg tee) with our custom 100mm BSP PVC to DWV fitting with the FRT fire coupling 500mm from ground level.

    Install a 100mm PVC pipe with sufficient length to reach above the overflow height and allowing the pipes and fittings to enter through the top of the tanks.
    Single Tank fire fighting Kit Installation Step 2
    Step 3

    Install another inspection port with the cap on the side to break the siphon if required

    Install another TEE with the open ends facing each Tank

    Then on both side a 100mm PVC pipe to a 45 bend to go through the tanks with a rubber tank seal, then another 45mm bend is installed inside the tanks with a pipe to the base of both tanks.
    Single Tank fire fighting Kit Installation Step 3
    Step 4

    The bottom of the pipe needs 4 x 40mm (75mm from bottom to centre) holes drilled into it for suction..
    Single Tank fire fighting Kit Installation Step 4
    Double Tank installation
    Double Tank fire fighting Kit Installation
    Step 1

    Bury the capped end of the pipe about 300 - 500mm into solid ground.

    *Additional requirement:
    Install a 100mm breather to the top of the tank.
    Double Tank fire fighting Kit Installation Step 1
    Step 2

    Next install a 100 mm inspection port (90 deg tee) with our custom 100mm BSP PVC to DWV fitting with the FRT fire coupling 500mm from ground level.

    Install a 100mm PVC pipe with sufficient length to reach above the overflow height and allowing the pipes and fittings to enter through the top of the tank.
    DoubleTank fire fighting Kit Installation Step 2
    Step 3

    Install another inspection port with the cap on the top to break the siphon if required.

    Then out of that a 100mm PVC pipe to a 45 bend to go through the tanks with a rubber tank seal, then another 45mm bend is installed inside the tank with a pipe to the base of the tank.
    Double Tank fire fighting Kit Installation Step 3
    Step 4

    The bottom of the pipe needs 4 x 40mm (75mm from bottom to centre) holes drilled into it for suction..
    Double Tank fire fighting Kit Installation Step 4
    Maintenance
    Maintenance

    The best way to keep round thread clean is to fit a blank cap or the new anti-vermin guard (included with the kit).

    If the fitting has dried out and cap does not rotate freely spraying silicon, CRC, WD40 or any similar product in the back where the cap swivels will make this rotate better and stop binding on the Aluminium.

    CRC Marine spray all over the fitting, will dry so it is not sticky and will protect it from the elements.
    Double Tank fire fighting Kit Installation Step 4
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