Hi John
I regret that’s not somethi9ng we offer and I don’t know of a Torch I can suggest/recommend. I wouldn’t have thought Compressed air would give you the precision flame that Oxygen produces and it certainly won’t produce the heat.
Sorry I couldn’t help further.
Cheers Graham
Hi, I’ve recently brought the heavy duty heating/multi jet brazing torch. I’ve decided to switch the flashback arrestors and have decided to go for torch mounted. Would it be much of a problem having reg mounted as well as? I read about how that can cause problems with restricting flow? Just thought have a set each end would be a good idea. Cheers
Hi Dave
UK Hoses have a Check Valve at the Torch End (built into the Hose Fitting).
These Check Valves are your first line of defence against Flash Backs.
Flash Arrestors on the Regulators are the fallback in case a Flash Back gets passed the Check Valve.
In 30 years of selling Flash Arrestors, I’ve only ever sold ONE to a customer who had a Flash Back reach the Arrestor, so Check Valves do a good job!
American systems do not have Check Valves, so they fit Flash Arrestors to the Torch to protect the hoses from Flash Back damage.
The downside to Flash Arrestors on the Torch is they add quite a bit of weight and bulk.
To get to your question, I would not have Flash Arrestors on the Torch and Regulator. As you almost certainly have Check Valves on your Hoses, this would be 3 devices in the system, so flow issues become a very real possibility.
Hope that all helps
Regards Graham
I note your recommendation of 0.20 bar or 0.25 bar oxygen and gas pressures (depending on size) for multijet nozzles. However, how do you set this with any accuracy? For example the outlet pressure gauge on your propane regulator has a full scale deflection of 6 bar, so trying to set 0.2bar is hardly going to move the needle and isn’t going to be very accurate. I can’t locate any propane regulators with pressure gauges that would allow 0.20 bar to be set accurately.
Hi Nigel
Our Propane Regulators have an output range of 0-4 bar. Outlet pressure gauges nearly always show 2 bar above the max of the Regulator for technical reasons.
0.25 bar is the first black mark on the outlet pressure scale of our Propane Regulator. I set this pressure regularly when I do brazing with Oxygen + Propane, using a Muti-Jet Torch and have not had any issues with pressure accuracy or flame stability.
The challenge for Regulator manufacturers is that Propane is regularly used for Cutting and Heating. These applications can require pressure of 2-4 bar, so it is important that Propane Regulators can handle this.
I hope that helps.
Cheers Graham
Many thanks Graham. It sounds as if I will need two torches. The propane regulator I have been sold is a bog standard caravan type one. Is this suitable or do I need a regulator with gauges so that I can alter the pressure to suit the tip in use? Yours, Steve.
I wouldn’t use a Regulator designed for Caravan use!
Pressure adjustment and at least a Delivery Pressure Gauge are pretty fundamental, have a look at our Propane Regulator. For safety, you should also use a Flash Arrestor!
If you need any more detailed advice, give me a call, the numbers on our website.
Hope I’ve helped, Graham
Hi. I’ve been sold AFN nozzles for cutting with propane. Is that correct? I can’t get them to light. I can’t find information on the propane pressure for these nozzles. I purchased a light duty cutting attachment but can’t stop flame leakage around the nozzle holding nut. I’m new to gas cutting and primarily want to do some brazing as well. Thanks, Steve.
Hi Stephen
You can get away with using an AFN Cutting Nozzle with Oxy/Propane, but it’s not ideal. There is not a readily available Nozzle on the market for Lightweight Torches I’m afraid, so you will either need to do the best you can, or buy a Heavy Duty Torch and Cutting Attachment that ARE designed for Oxy/Propane.
The flame leakage around the Head Nut sound like a poor sealing surface on either the Nozzle or the Cutting Attachment. Contact your supplier for advice on this and pressures.
Hope that helps (at least a bit!)
Cheers Graham
Hi Graham
Im just changing to Oxy-Propylene. Can I use my BOC saffire torch and existing nozzles for brazing and bronze welding? If so do I use a different pressure?
Hi Robin
Short answer is Yes you can, slightly longer answer is Acetylene Nozzles are not very good with Propylene!
We offer a Propane Neck and Propane Nozzles that would fit your Saffire Torch. You would need to check if your Saffire is a Lightweight, or Type 3. If it’s type 3 you will also need the Neck Adaptor. If your not sure, give me a call.
IMPORTANT, make sure you change your Regulator and Hose to a Propane type, DO NOT use Acetylene equipment with Propylene!!! If your Flash Arrestor is labelled “Acetylene” you will need to change that as well, if it’s labelled “Fuel” it will be OK.
If you haven’t already read it, you might find my blog article Can I Use Propane or Propylene Instead of Acetylene useful
Hope that helps
Cheers Graham
Thank you for your reply. Very clear and exactly the information I requested. It’s so important to handle this equipment safely and to be sure of the correct procedures. The additional link to the setting up a gas kit was spot on. Once again many thanks.
Having not used oxy/propane before (only oxy/acetylene) can you explain the lighting up and setting the flame procedure please. I have just purchased your GK25 Torch and Reg set along with GHD08 Super Heater and want to get this right (I understand it may be different to Oxy/Acetylene)
Hi Brian
Lighting and shutting down procedure is the same as for Oxygen + Acetylene.
Light the Propane first (ensure there is no visible gap between the end of the Nozzle and the Flame or the flame will blow out when you turn on the Oxygen).
Slowly turn on the Oxygen until you get the desired flame.
You may notice that the central “Cone Flame(s)” is longer than with Acetylene, this is quite normal and is because Propane is slower burning than Acetylene.
I’ve written a blog article on setting up a Gas Kit that includes lighting etc (it does cover Propane as well).
If you need any further help, please call (numbers are on our main website).
Hope I’ve helped
Kind Regards
Graham
Hi is there a torch that can be used with propane and compressed air for small brazing work?
Hi John
I regret that’s not somethi9ng we offer and I don’t know of a Torch I can suggest/recommend. I wouldn’t have thought Compressed air would give you the precision flame that Oxygen produces and it certainly won’t produce the heat.
Sorry I couldn’t help further.
Cheers Graham
Hi, I’ve recently brought the heavy duty heating/multi jet brazing torch. I’ve decided to switch the flashback arrestors and have decided to go for torch mounted. Would it be much of a problem having reg mounted as well as? I read about how that can cause problems with restricting flow? Just thought have a set each end would be a good idea. Cheers
Hi Dave
UK Hoses have a Check Valve at the Torch End (built into the Hose Fitting).
These Check Valves are your first line of defence against Flash Backs.
Flash Arrestors on the Regulators are the fallback in case a Flash Back gets passed the Check Valve.
In 30 years of selling Flash Arrestors, I’ve only ever sold ONE to a customer who had a Flash Back reach the Arrestor, so Check Valves do a good job!
American systems do not have Check Valves, so they fit Flash Arrestors to the Torch to protect the hoses from Flash Back damage.
The downside to Flash Arrestors on the Torch is they add quite a bit of weight and bulk.
To get to your question, I would not have Flash Arrestors on the Torch and Regulator. As you almost certainly have Check Valves on your Hoses, this would be 3 devices in the system, so flow issues become a very real possibility.
Hope that all helps
Regards Graham
I note your recommendation of 0.20 bar or 0.25 bar oxygen and gas pressures (depending on size) for multijet nozzles. However, how do you set this with any accuracy? For example the outlet pressure gauge on your propane regulator has a full scale deflection of 6 bar, so trying to set 0.2bar is hardly going to move the needle and isn’t going to be very accurate. I can’t locate any propane regulators with pressure gauges that would allow 0.20 bar to be set accurately.
Hi Nigel
Our Propane Regulators have an output range of 0-4 bar. Outlet pressure gauges nearly always show 2 bar above the max of the Regulator for technical reasons.
0.25 bar is the first black mark on the outlet pressure scale of our Propane Regulator. I set this pressure regularly when I do brazing with Oxygen + Propane, using a Muti-Jet Torch and have not had any issues with pressure accuracy or flame stability.
The challenge for Regulator manufacturers is that Propane is regularly used for Cutting and Heating. These applications can require pressure of 2-4 bar, so it is important that Propane Regulators can handle this.
I hope that helps.
Cheers Graham
Many thanks Graham. It sounds as if I will need two torches. The propane regulator I have been sold is a bog standard caravan type one. Is this suitable or do I need a regulator with gauges so that I can alter the pressure to suit the tip in use? Yours, Steve.
I wouldn’t use a Regulator designed for Caravan use!
Pressure adjustment and at least a Delivery Pressure Gauge are pretty fundamental, have a look at our Propane Regulator. For safety, you should also use a Flash Arrestor!
If you need any more detailed advice, give me a call, the numbers on our website.
Hope I’ve helped, Graham
Hi. I’ve been sold AFN nozzles for cutting with propane. Is that correct? I can’t get them to light. I can’t find information on the propane pressure for these nozzles. I purchased a light duty cutting attachment but can’t stop flame leakage around the nozzle holding nut. I’m new to gas cutting and primarily want to do some brazing as well. Thanks, Steve.
Hi Stephen
You can get away with using an AFN Cutting Nozzle with Oxy/Propane, but it’s not ideal. There is not a readily available Nozzle on the market for Lightweight Torches I’m afraid, so you will either need to do the best you can, or buy a Heavy Duty Torch and Cutting Attachment that ARE designed for Oxy/Propane.
The flame leakage around the Head Nut sound like a poor sealing surface on either the Nozzle or the Cutting Attachment. Contact your supplier for advice on this and pressures.
Hope that helps (at least a bit!)
Cheers Graham
Hi Graham
Im just changing to Oxy-Propylene. Can I use my BOC saffire torch and existing nozzles for brazing and bronze welding? If so do I use a different pressure?
Hi Robin
Short answer is Yes you can, slightly longer answer is Acetylene Nozzles are not very good with Propylene!
We offer a Propane Neck and Propane Nozzles that would fit your Saffire Torch. You would need to check if your Saffire is a Lightweight, or Type 3. If it’s type 3 you will also need the Neck Adaptor. If your not sure, give me a call.
IMPORTANT, make sure you change your Regulator and Hose to a Propane type, DO NOT use Acetylene equipment with Propylene!!! If your Flash Arrestor is labelled “Acetylene” you will need to change that as well, if it’s labelled “Fuel” it will be OK.
If you haven’t already read it, you might find my blog article Can I Use Propane or Propylene Instead of Acetylene useful
Hope that helps
Cheers Graham
Thank you for your reply. Very clear and exactly the information I requested. It’s so important to handle this equipment safely and to be sure of the correct procedures. The additional link to the setting up a gas kit was spot on. Once again many thanks.
Thanks Brian, glad to be of help, Graham
Having not used oxy/propane before (only oxy/acetylene) can you explain the lighting up and setting the flame procedure please. I have just purchased your GK25 Torch and Reg set along with GHD08 Super Heater and want to get this right (I understand it may be different to Oxy/Acetylene)
Hi Brian
Lighting and shutting down procedure is the same as for Oxygen + Acetylene.
Light the Propane first (ensure there is no visible gap between the end of the Nozzle and the Flame or the flame will blow out when you turn on the Oxygen).
Slowly turn on the Oxygen until you get the desired flame.
You may notice that the central “Cone Flame(s)” is longer than with Acetylene, this is quite normal and is because Propane is slower burning than Acetylene.
I’ve written a blog article on setting up a Gas Kit that includes lighting etc (it does cover Propane as well).
If you need any further help, please call (numbers are on our main website).
Hope I’ve helped
Kind Regards
Graham
Hi what pressure would you recommend for the oxy3000 kit to weld lead, the same as above ? Thanks
Hi Peter
Thanks for the question. Outlet Pressure for both Oxygen and Fuel gas should be no higher than 0.25bar.
Cheers
Graham