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8" Rocket Masonry Heater Derrick Build Kit

  • This is one option for places with low ceilings; it is 80½" tall. The barrel on the tall column can be full-sized if the ceiling allows. This image shows a partial barrel at the top of the tall column. The entire interior of the tall column is filled with dense fireclay bricks. The tops of both the shorter column (which contains the heat riser) and the tall column are covered with cast caps made from a heat absorbing refractory material. The caps weigh 70 pounds each.
  • The taller of the two towers is filled with firebricks to absorb and store the heat. The bricks can be heated to 800°F.
  • Steel box included in the kit to house the feed tube, burn tunnel and surrounding vermiculite. The box comes in pieces you bolt together. A top plate, (not shown here) is also included. The box is not pushed all the way into place in this image.
  • Steel box included in the kit to house the feed tube, burn tunnel and surrounding perlite. The box comes in pieces you bolt together. The top plate has the opening for the feed tube and secondary air already cut.
  • The top of the shorter barrel tower is lined with high temperature insulating blanket, (included in the kit). This blanket keeps the barrel from getting too hot by preserving the heat as it exits the heat riser. It naturally flows into the adjacent barrel tower where the heat is absorbed by the fireclay bricks shown in the second image.
  • Exhaust collar included in kit to connect the two barrel towers. The entire collection of steel drums must be arranged to not let any air inside. Air goes in at the burn tunnel and out at the stove pipe. The rest of the system must be gas tight.
  • Derrick prototype. The stack containing the heat riser is 2 barrels tall. The adjacent bell is 3 barrels tall or 102". Fireclay bricks are stacked inside all the way up the 3 steel drums. Derrick can be built with 2, 2½, or 3 barrels in the bell tower. The higher the bell tower, the more fireclay bricks for greater heat storage capacity. It would also be possible to make a second bell vertically from steel drums or horizontally as a bench.
  • Cast Refractory Collar included in the kit used to connect the two barrel towers.
  • 8" Dragon Burner Rocket Heater Core included in Derrick Kit. You can use cord wood splits up to 3" in diameter in this size burn tunnel.
  • This unit was built by a NJ customer on a metal platform which can be moved around by a forklift.
  • This is the opening into the first bell created by the NJ customer.
  • Now, you can see how the collar fits between the opening over the heat riser and the opening in the first bell.
  • From a different angle, you can see the first bell filled with fireclay bricks. At the bottom of the picture, the two connections between the first bell and the second bell are visible.
400.00 LBS
$225.00 (Fixed shipping cost)

Product Description

This kit includes:

  • 8" Rocket Mass Heater shippable Core
  • Steel Containment Box Kit with gaskets (metal box and top plate bolts together)
  • 1" High Temperature Blanket (for heat riser barrel)
  • Cast Refractory Exhaust Collar Assembly
  • Exhaust Collar Gaskets
  • 3 Barrel Gaskets for joining barrels

It does not include:

  • 55 gallon steel drums
  • Vermiculite/Perlite Insulation Filler
  • Fireclay Bricks to be stacked inside the tower of steel drums
  • Barrel Caps

Barrel Caps are 3,000°F cast Refractory Caps that fit over the rim of the steel drums on top of each tower. They provide additional heat storage as well as provide a long lasting lid for the parts of the heater that are subject to thermal shock. If you do not use these caps, you can insulate the barrel lids with ceramic fiber blanket. However, the insulation may need to be replaced every season.

Double click on the images to bring up a slide show with descriptions.

This item is shipped via LTL freight and the exact price depends on the distance from Houston and the relative size of the town in which you live. It also makes a difference whether the address is residential or commercial and whether or not you need a liftgate. We can quote you the exact price with your zip code and these details.




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