- #1
Joseph West
- 1
- 0
Hello,
First, thank you for any assistance. I am a mechanic and my Super want's me to design a back-pressure system that will simulate field use of my machines in my shop. We spray several types of fireproofing thru hose's that vary in length between 50 and 500 feet.
We use blower's that put out 15-20 psig and 300-25,000cfm.
I was told by the material manufacturer that the back pressure on a 50' hose with the optimum material in it should be between 3.5-4 PSIG but I can't seem to figure out how to relate that to a longer hose or if 3.5-4 PSIG of back pressure is (or can be considered) a lot of air pressure.
Can you have 5 PSIG with a 15,000 CFM? How does that work.
I am sorry I am not an engineer or physics specialist so much of this I just don't understand so any help is truly appreciated.
Joseph L. West
First, thank you for any assistance. I am a mechanic and my Super want's me to design a back-pressure system that will simulate field use of my machines in my shop. We spray several types of fireproofing thru hose's that vary in length between 50 and 500 feet.
We use blower's that put out 15-20 psig and 300-25,000cfm.
I was told by the material manufacturer that the back pressure on a 50' hose with the optimum material in it should be between 3.5-4 PSIG but I can't seem to figure out how to relate that to a longer hose or if 3.5-4 PSIG of back pressure is (or can be considered) a lot of air pressure.
Can you have 5 PSIG with a 15,000 CFM? How does that work.
I am sorry I am not an engineer or physics specialist so much of this I just don't understand so any help is truly appreciated.
Joseph L. West