Hose Systems to:
     Protect Homes from Wildfires,   
     Confine Prescribed Fires, 
     Deliver Water Over Long Distances.  

     IFFC, LLC    Contact: steve.shoap@alum.mit.edu    Twitter: @steveshoap

The ideas presented here are protected by US Patents 7,819,345,  7,942,350, 9,561,393,
     and Canadian patents 2,693,158, and 2,891,833.


Spray Hose Invention to Protect Homes from Wildfire and Embers

The above photo shows 200 ft of a spray hose that can protect a home from wildfire embers, and also confine a prescribed fire (RxFire). There is a spray nozzle every 10 ft that sprays water onto the adjacent area.

The hose in the above photo has a diameter of 3 inches. 

Further experimentation has shown that a similar hose with diameter 1.5 inches gives exactly the same spray result. A 3 inch hose is needed for very long hose lengths to reduce pressure loss, however a 1.5 inch hose will be sufficient to protect most homes. 

To view a
VIDEO of the 200 ft hose spraying 300 gpm of water, Click HERE

The picture above shows a house that is surrounded by the spray hose (shown in blue). A pump is pumping water out of a swimming pool into the blue spray hose. The gray water spray is shown spraying vertically from the spray hose. 
A simple clamping device, shown later, allows for adjustment of the spray angle.

NEW SPRAY NOZZLE DESIGN is easier to build and, uses the HFX series of hose from All American Hose. According to All American Hose HFX is "Highly resistant to both contact and radiant heat".

The photo below shows  how each spray nozzle of the spray hose surrounding the house is constructed.

At the right of the photo below is a rectangle of fire hose that has two small holes for spraying water.

At the center of the photo is a piece of  2 inch PVC that has a rectangle cut into its surface.
The PVC also has a 7/8 inch slot cut out of the PVC. The slot has been cut so that the PVC will clamp tightly to the fire hose (on its left) when the PVC is bent around the hose.

The fire hose at the left supplies the water to the nozzle assembly, and the water comes out of the small rectangular hole seen in the hose (at the left). There are two ink dots at each side of the small rectangle that are used for alignment when the parts are assembled.

The photo below shows the fire hose inserted into the PVC. The hole in the hose is centered in the rectangle of the PVC. The two ink dots next to the rectangle will be used later to orient the placement of the hose with two holes.


The photo below shows the center hose, the PVC and the rectangular hose patch assembled together.
When water is pumped into the long fire hose, some the of the water exits the rectangular hole in the hose.
This water enters the chamber formed by the rectangular area removed from PVC.
The water in the chamber then exits from the two holes shown in the photo.

If a hose has a single hole, the water exiting will form a narrow column. The water exiting the TWO HOLES
does not form columns, but actually forms a very wide and deep spray. The wide and deep spray pattern 
is very desirable for fighting a grassfire or low intensity wildfire. The spray is also useful for stopping blowing embers from reaching the house. Embers are often the reason that a house catches fire.

Ink dots were placed on the hose inside the PVC so that the hose patch with two holes can be properly placed. Note that the ink dots can be seen in the two holes in the photo.

To see 2 Spray Nozzles on a deck, where the excellent spray pattern may be seen, click HERE


Below is picture of top hose layer after 1 minute of propane torch. (3,623 deg F)

Note that the printing on the PVC is intact. The hose protected the PVC.

Click HERE  to see a video of the 1 minute burn of the hose shown above.

The photo below shows a prototype wooden cradle that can hold the spray nozzle at different angles for spraying.
To change the angle, remove the duct tape from the clamps, rotate the hose and then re-clamp the duct tape tabs.

This cradle is not fireproof and is just a temporary device.

Spray Hose System vs. Sprinkler System

The Spray Hose will cost much less than a sprinkler system.

Speed of Deployment:
The sprinkler system has a very large number of pieces to be interconnected.
The Spray Hose is a simple hose that is simply placed on the ground.
The Spray Hose can be deployed MUCH faster.

Spray Height:
The Spray Hose has a spray that is HIGHER and more DENSE than the sprinkler system.

Moving Parts:
Spray Hose had none. Sprinkler system has many.

Fire Resistance:
The Spray Hose uses a very fire resistant hose.
Sprinkler systems usually use commodity hoses.

The image above is a low cost pump that can supply water to 50 feet of Spray Hose.

The system CANNOT work from a garden faucet in a home.
The homeowner must have a large and local source of water.
The tank shown below is an example of what is available.

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