Stacy E. Apelt - Bladesmith
ilmarinen - MODERATOR
Moderator
Knifemaker / Craftsman / Service Provider
- Joined
- Aug 20, 2004
- Messages
- 37,767
Velocity isn't an issue. The 1/4" pipe provides enough. That is why I suggested removing the bell reducer and keeping 1/4" all the way to the T.
A MIG tip would restrict flow on a blown burner. The only reason it is there on a venturi burner is to create the Venturi low pressure zone to draw in the air. On a blown burner, you are forcing the air in, so there is no need of a high velocity flow.
All that is why a venturi burner runs on 5 to 30 PSI and a blown burner runs on 1 to 5 PSI. Same volume of gas, just different ways to mix it with the air. Obviously, the blown burner is more efficient, because you can independently adjust the air and gas to get any desired mix.
If you want to have the 1/4" pipe stick out inside the manifold, as JT mentioned, drill a plug that fits the Tee so it makes a snug fit for a 1/4" stainless steel pipe nipple. Cut off the threads on one end and file smooth inside and out. Tap the pipe through the plug and after checking the amount of extension needed to be roughly in the center of the manifold, put some thin CA glue on the pipe to seal it in place. Put a bead of JB weld around the pipe to make it secure and hook up the rest of the gas line as normal. (If you weld, just weld the pipe in place).
A MIG tip would restrict flow on a blown burner. The only reason it is there on a venturi burner is to create the Venturi low pressure zone to draw in the air. On a blown burner, you are forcing the air in, so there is no need of a high velocity flow.
All that is why a venturi burner runs on 5 to 30 PSI and a blown burner runs on 1 to 5 PSI. Same volume of gas, just different ways to mix it with the air. Obviously, the blown burner is more efficient, because you can independently adjust the air and gas to get any desired mix.
If you want to have the 1/4" pipe stick out inside the manifold, as JT mentioned, drill a plug that fits the Tee so it makes a snug fit for a 1/4" stainless steel pipe nipple. Cut off the threads on one end and file smooth inside and out. Tap the pipe through the plug and after checking the amount of extension needed to be roughly in the center of the manifold, put some thin CA glue on the pipe to seal it in place. Put a bead of JB weld around the pipe to make it secure and hook up the rest of the gas line as normal. (If you weld, just weld the pipe in place).
Last edited:
