TFT Left the "Dual Force "to center the Elkhart" Playpipe "and right the" Silver "(mouthpiece Akron) - Camiva Pump Renault 1998 with CHZ pump 90 / 3 with water tank of 3000 liters.
- A hose (for python) from 70 mm to 75 mm Storz connections with a length of 15 meters.
- Another hose (to power the pump from the tap) from 70 mm to 75-Storz mm of the same length as before.
- Python AKRON silver-tipped 1 ¼ "(32 mm) thread NH 2 ½" (65 mm) we call "Silver."
- Python unknown brand with a solid stream nozzle 15/16 "(24 mm) and 75 mm Storz we call" African ".
- Python brand Elkhart" Playpipe "nozzle 1.5" ( 38 mm) with NH 2 ½ "and 75 mm Storz we call" Playpipe.
Pump static pressure of 8 bar 3,000-liter tank.
- Silver Python: the pond was discharged into 2:19 (min: sec) residual pressure was 4 bar at the pump.
- African Python: The pond was discharged into 2:47 (min: sec) with a residual pressure of 4 bar at the pump.
- Playpipe Python: The pond was discharged into 1:50 (min: sec) with residual pressure of 3.5 bar at the pump.
- Silver Python was not tested.
- African Python key to open the residual pressure was 7 bar with a good range jet with the ability to sustain for three firefighters and longer. The driver if he could increase the pressure to 15 bar without any problems.
- Python "Playpipe" when opening the spout the residual pressure was 3.5 bar (from 8 to 3.5), now the pump operator (driver) could increase the pressure to 14 bar with an amazing jet over 50 meters wide, with a large reaction force forcing four firefighters to hold the line , this for a couple of minutes only, Jet was really impressive.
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We can not a "Blitz Attack" from our pond in good condition, since the pipe or duct downstream output corresponds to a narrow 65 mm. This prevents build a large python and get your best performance, as Playpipe hose with the nozzle 70 mm or monitor (from 1800 to 3000 bpm), but if you allow a stream of 20 to 25 meters.
- Any
- PCS nozzle to 24 mm can reach and flow (1,500 lpm) fire acceptable to a "relatively large". By increasing the diameter of the nozzle reduces the distance of the spray.
- is possible to deploy up to two pins that shed approx. 800 lpm @ 7 bar (or Protek Dual Force), only the pond at 7 bar to have good range and well-defined haze, ie a jet (fog-smooth) more efficient internal .
- The pressure did not exceed 4 bar in any case to work with these PCS, as a result of limited-range jets defensive works in large fires.
- motor speed was increased to 2,000 rpm without achieving the increased pressure in the pump body.
Down from 65 mm tank does not allow a large drop of water for large pythons. B-2 to work the tap:
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PCS allowed to assemble a large flow capacity, approx. 2,000 lpm of Playpipe.
- easily allowed to increase pressure to 15 bar in the "African" and up to 14 bar in the "Playpipe."
- With the resulting pressure achieved an excellent range of the jet in each case (not measured).
- At 14 bar the needle began to vibrate, this is a clear sign that the bomb began releasing more water from coming in, this may result in harmful cavitation in the rotor, therefore not insisted on increasing pressure.
- The tap used in this exercise corresponds to a higher flow GREEN tap taps that type fire 100 mm column yellow. outlet pressure tap was 5 bar.
- not trust that all taps be as good as this. In a fire rarely bring tap 5 bar pressure and high flow.
- Working coordinated "Python-Bomb" for the opening and closing the high flow spout, so as well, especially if you are working with other pythons and / or feeds us another bomb.
- Open and close the python very slow.
- need not exceed 8 bar of pressure in the nozzle, for smooth running cash from abroad.
- all know the meaning of "Little Fire Little Water " and "Fire Much Much Water . In conclucion and round:
- "Much Fire, lots of water, few Pythons" .
Annex
Our PCS "Playpipe" has no nozzle or stopcock after the handle, unlike some that if they bring, inserting a key restricting water pipe diameter reducing their ability flow is the same effect as putting a smaller nozzle.
Annex 2
Static Pressure: that pressure is found in a container, the pressure depends on the difference between the height of a point and the water surface (top). Dynamic Pressure
: is the pressure that has moving water. water velocity and pressure depend on the size of the exit orifice. The speed gives better reach the water. Residual Pressure
: When water flow through a nozzle, the pressure in the container will decrease, this is called the residual pressure remaining in the container while emptying. If we increase the output pressure will decrease even more lacking or unavailable.
Annex 3
A cash flow is one that puts out the fire with water, while efficiently using the flow stream sufficient to extinguish the fire, in other words is efficient if turning off the fire "all" water vapor.
Annex 4 References flow
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