kbinkster
2006-02-27, 7:27pm
Sometimes, while trying to troubleshoot a torch problem, people suggest changing the pressures at the regulators on the tanks - even if it is only by one pound.
You may ask what changing the pressures at the tank would do?:-k
Well, for a normal set-up, the only thing changing the pressures at the tank does is change how sensitive the needle valves are. The higher the pressure, the less you have to turn the valve to make the adjustment. This makes the valve more sensitive/responsive. The lower the pressure, the more you have to turn the valve to make the adjustment. This makes the valve less sensitive/responsive.
Generally, when trying to decide what pressures you should be using with your torch, you should try to stay close to the manufacturer's recommendation. A pound on either side won't matter.
There are instances where one may need to deviate from the manufacturer's recommendation. Raising the pressure would be more likely than having to lower it. Running an extra long hose (50+ feet) may necessitate running a higher pressure than recommended by the manufacturer. The same can be said of running a line that has restrictions in it, such as smaller id's (inner diameters), elbows and fittings. Flash back arrestors and quick disconnects can necessitate running a higher than recommended pressure. So can running multiple torches online. But, if you are talking about running one torch in a typical set-up, regardless of fuel type, then there should be no need to deviate from the manufacturer's recommendation for that torch. Because, ultimately, the needle valves on the torch control the flow.
And as for changing the pressure by one pound, it doesn't make a dime's worth of difference. In other words, the effect is negligible.
:smile:
You may ask what changing the pressures at the tank would do?:-k
Well, for a normal set-up, the only thing changing the pressures at the tank does is change how sensitive the needle valves are. The higher the pressure, the less you have to turn the valve to make the adjustment. This makes the valve more sensitive/responsive. The lower the pressure, the more you have to turn the valve to make the adjustment. This makes the valve less sensitive/responsive.
Generally, when trying to decide what pressures you should be using with your torch, you should try to stay close to the manufacturer's recommendation. A pound on either side won't matter.
There are instances where one may need to deviate from the manufacturer's recommendation. Raising the pressure would be more likely than having to lower it. Running an extra long hose (50+ feet) may necessitate running a higher pressure than recommended by the manufacturer. The same can be said of running a line that has restrictions in it, such as smaller id's (inner diameters), elbows and fittings. Flash back arrestors and quick disconnects can necessitate running a higher than recommended pressure. So can running multiple torches online. But, if you are talking about running one torch in a typical set-up, regardless of fuel type, then there should be no need to deviate from the manufacturer's recommendation for that torch. Because, ultimately, the needle valves on the torch control the flow.
And as for changing the pressure by one pound, it doesn't make a dime's worth of difference. In other words, the effect is negligible.
:smile: