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What is your prefered nozzle--smooth bore or fog
My opinion is that both have their place ,but, i prefer tha smooth bore
I have used them both and it just seems to me that the sb nozzle is easier to manuver in an interior attack because of the slight pressure difference.
Although, on the first in line your adrinline takes care of manuverability for you, but, as the call goes on I tend to tire less while using the sb.
I have used them both and it just seems to me that the sb nozzle is easier to manuver in an interior attack because of the slight pressure difference.
Although, on the first in line your adrinline takes care of manuverability for you, but, as the call goes on I tend to tire less while using the sb.
Replies to This Discussion
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Permalink Reply by Brandon on
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We have two fog nozzles but never use them the smooth bore is what we use
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Permalink Reply by John Robinson on
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I prefer the smooth bore.
For a 2 1/2" interior attack the 1 1/8" tip is hard to beat. For exterior work you should probably move to the 1 1/4" tip. These will outperform a fog tip and are easier to handle due to the lower pressure. You can also run them right off a hydrant in those situations where that is necessary. If your engine dies or you are running handlines directly off a hydrant at the end of a dead end court, the straight pipe is the only option.
The fog tips move too much air and upset the thermal balance more than necessary. They absorb more heat sure, but they make it hotter down on the floor where you are.
Our small lines (1 3/4" ) all had fog tips (except for the 7/8" pipes we used for highrise packs. This was to give better reach at lower pressures). For small lines, the versatility of the fog tip seemed to outweigh its disadvantages. The fog tip has the advantage of moving so much air that you could breathe by pressing your face to the hose if you were pipeman and your air quit on you. (You're not likely to see this technique advertised in books anymore, but I've seen it used to great advantage more than once!)
(To figure your flow at 50 lbs tip pressure: 29.7* Diameter of the tip squared* 7.07....do they still teach that?)
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Permalink Reply by Paul Montpetit on
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we use smooth bore for foam and combi (fog) on our attack lines...
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Permalink Reply by firegirl1 on
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Which you use should depend on the attack. Hit the seat and need lots of water? Go with a smooth bore.
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Permalink Reply by josh on
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I my fire dept we use mainly sb nozzles with 1.25 tips. I agree with the saying why bring a knife to a gun fight
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Permalink Reply by Seth "Stitch" Jones on
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the majority of the guys at my station prefer 1 3/4 combination task force nozzles. personally I like smooth bores. on the engines we have 1 3/4 combination task force fogs and on the back smooth bore.
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Permalink Reply by Chris on
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I prefer the fog nozzle gives you a lot more options as far as fire attack. Plus most have a water stream breaker(can't remember the actual name for it right now), that helps prevent electrocution. Our 1 3/4'' jumpline is an Elkhart Brass Chief Nozzle 250GPM as well as our 2- 250' 1 3/4'' preconnects. In our Engineers compartment we keep various other nozzles for our 2 1/2'' lines and some specialty nozzles for our 1 3/4'' incl. the chief with playpipes on it.
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the only thing i wory about with combo nozzles is that someone is not paying attention and fogs a fire room and we all get steamed
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Permalink Reply by TabergFireFighter4 on
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We use both smooth bore and fog its nice to use the fog at times when you get really hot in the fire it is like a air conditioner in a burning building...
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Permalink Reply by Mike Orbell on
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Deffinitely the fog nozzel is my favoritebeing the most practicle, offering a varitation of all practical,usefull and personal protection and adjustmets. Where as the smooth bore is more of a tactal head on nozzel.
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Permalink Reply by David McElroy on
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There has been numerous discussions and opinions on this matter for years . We all know what opinions and a certain part of the human anatomy have in common but here is my opinion on the matter. First of all I'm a very big fan of solid bore nozzles and I have been in the minority in my department for some time. Whenever I say I like solid bore nozzles and fog nozzles belong in a museum people think I'm nuts. Before you rush to judgement that I'm nuts for my way of thinking take a look at the philosophy of solid vs fog.
People tend to talk about stream quality and alot of people tend to judge the effectiveness of a hose stream on how good the stream looks. The appearance of a stream is not as important as how will the stream reach its target and how much water will be delivered. People seem to judge the effectiveness of a fire stream on how good or bad the stream looks.
When you compare fog to solid you have to take into consideration what happens to the stream as it leaves the nozzle and the effect it has on the thermal layer at the ceiling. When a stream leaves a fog nozzle the stream is broken up into smaller dropletts and the layer at the ceiling absorbs those smaller droplets and converts the water steam and reduces the effectiveness of that stream to penetrate the thermal layer . The solid bore nozzle stream has larger droplet size and better penetration and reach, some people will say that you get more water damage with solid bores than you do with a fog but in reality because you have better penatration and more GPM's with a solid bore than a fog your knock down ability is greatly increased therefore knocking the fire down quicker therefore not using as much water as you do with a fog nozzle.
Take a look at a fog nozzle on 150' of 1 3/4 hose to achieve 150 Gpm. Friction loss in your hose is roughly 45 psi now add 100 psi for fog nozzle, so 145 psi will give you around 150 Gpm.
Now lets look at the solid bore nozzle of 15/16" on 150' of 1 3/4 hose. Friction loss in your hose is around 45 psi and your nozzle pressure is 50 psi (so you have 1/2 the nozzle pressure of the fog) and now at 95 psi you actually will be flowing 180 Gpm due to the size of the opening at the end of your 15/16" nozzle.
So 145 psi @ 150 Gpm or 95 psi @ 180 Gpm which would you want to bring into your next job. So thats why I prefer a solid over a fog .
Stay Safe
Dave
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