What valve?...on the torch? Open it up enough to play a good flame.
If you are soldering on a valve, you need to take out the valve stem from the body unless you want to melt the seats. Opening the valve is not enough.
Most use propane, but you can use acetylene also. Just as long as you don't get it too hot. Propane will not melt copper, but acetylene will.
When soldering a person can use an electric tool or a torch. The torch uses a flame, while an electrical tool has a soldering tip which is heated.
Typicaly a propane torch is a pair of metal tubes with a brass or cast-iron head holding a copper tip and a base containing a levered valve with mixing cone. The base or handle, mixes oxygen and propane (adjustable with a pair of valves) to maintain a "neutral flame". The Lever on the handle opens up a larger flow of oxygen to allow the propane-oxygen mix to burn through various materials, usually steel. For a long list of torches for sale (propane and others) look into Eddies welding in TX. 1-800-4ATORCH. That's where I get most of my gear. Or enquire at the Praxair website.
It's Max Power Propylene fuel, comparable to propane fuel used for torches, etc. It has a higher burning temperature than propane fuel, ~3600ºF as compared to ~3400ºF of propane fuel. It is used in many different applications like welding, cutting, soldering, and flame polishing.
Soldering is more or less permanent unless you break it with a hammer or melt it with a torch.
both
You need a torch when you're soldering metals or when you're storming Frankenstein's castle.
The Olympic torch stays burning with propane
yes it can but apparently isn't ideal. we run acetylene regs on our propane torch.
An acetylene or propane torch.
You need a propane torch and iron matrice
The torch is constructed of copper and wrought iron.