After extensive testing on extreme burning Batchboxes.

we have decided to stop stocking the RA330

RA253MA has proven it can withstand long-term exposure to extreme conditions

Contact us at dragontech@blackfoot.net

Currently in stock RA253 MA $60 + shipping

Contact us at dragontech@blackfoot.net

Why would you want a very expensive RA330 stub versus a standard carbon stub?

If your batch box is burned all day every day of the heating season then you may want to upgrade to RA253ma.

If your batch box is burned once or twice a day during the heating season then a standard carbon stub is an economical choice.

A floor channel stub of carbon steel is expected to last several seasons in a lightly used Batch. In a heavy use situation the cobra hood will degrade in a few months. The entire stub (but not the tube) will need replaced every season, if not twice a season. For those folks with welding / metal working ability, it is an hours work to cut off the old stub and weld on a new one. For those without that ability removal of the air channel is required, as well as hiring a welder to fabricate a new cobra stub.

RA253ma is a special alloy designed to survive in a constant ultra-high temperature of 2000°F indefinitely. A floor channel with an RA253ma stub is expected to survive many years or a lifetime . Matt Walker has run a RA stub on his high-use cook stove for 2.5 years with no sign of spalling at all! In comparison, both of my batchboxes are burned all day, every day. Using a carbon steel cobra stub, they have no hood left after only 2 months of heavy duty use. I expect to replace them no later than early spring.

Is the RA253ma for you? If you run your stove long and hot and you do not wish to work on it mid-winter or every spring, then the RA is the superior product and is the most cost-effective.