Vertical Tube Furnaces

Deltech Vertical Tube Furnaces have been the favorite of petrologists since 1973 when NASA selected Deltech to design and build vertical tube quench test furnaces for petrologic studies of the moon rocks.

The descendants of that design are widely used in geosciences research labs around the world. Our vertical clamshell furnaces are popular for use with materials test apparatus, and our bottom loading vertical tube model allows placement of a crucible inside a sealed atmosphere environment.

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What Our Customers Say

“The vertical tube furnace is working fantastically and is a great piece of equipment.“
Deltech Customer
“Our furnaces are reaching a decade of good work.“
Deltech Customer

Features of Vertical Tube Furnaces

Single and multi-zone designs. Each zone is individually temperature controlled. Every control system is UL508A compliant as certified by Intertek.
Sustained operating temperatures up to 1800 degrees Celsius.
Specify tube size up to 4” / 10 cm O.D. and hot zone length up to 36” / 91 cm. For larger diameter tubes, ask a member of our engineering team for information on how our tube plugs and thermal fixtures can reduce gradients.
Optional features that allow the use of more than one diameter of tube.
Mullite tubes are very good for thermal shock resistance and can be used at operating temperatures up to 1600 degrees Celsius. Above that, 99.8% alumina tubes are required to prevent creep. For more information on tubes, click here.
Bottom loading vertical tube design (VTOSD) for applications in which a load platform is required, such as when the material to be heated in inert gas needs to be placed in a small crucible.
Split shell/clamshell designs for uses such as wall mounting or mounting to a stand.
Can be designed to accommodate quench and tensile testing and other apparatuses.
Optional water-cooled end caps create exceptional gas seals and allow shorter tubes to be used. Shorter tubes have greater resistance to thermal shock. They can be supplied with custom fittings and oxygen and thermocouple probes as desired. The end caps require a one slpm water flow per cap. It can be a flow of tap water which is then drained, or a closed loop chiller can be employed. (The chiller is more environmentally friendly.)
Optional gas mixing and delivery systems include mass flow controllers, software driven digital control system, optional fluid distribution header.
Optional water chillers.
Optional Fugacity Measurement Kits include fugacity probes with integrated thermocouples which are inserted through the tube end caps.
For some models, optional NEMA One connector sets can be ordered to allow system installation without the aid of an electrician.

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Deltech Vertical Tube Furnaces at a Glance

Model	Tube O.D.	Hot Zone Length	Furnace Dimensions	Power Requirements For 1700° / 1800°	Weight
DT-VT-6	Up to 3.25“ 83mm	6in / 15cm	19” x 17” x 35” 48cm x 43cm x 89cm	3 kW / 7.5 kW	110 LB / 50 KG
DT-VT-12	Up to 3.25“ 83mm	12in / 30cm	19” x 17” x 41” 48cm x 43cm x 104cm	10 kW / 15 kW	155 LB / 70 KG
DT-VT-18	Up to 3.25“ 83mm	18in / 46cm	19” x 17”” x 47” 48cm x 43cmx 120cm	12.5 kW / 15 kW	200 LB / 91 KG
DT-VT-24	Up to 3.25“ 83mm	24 in / 61cm	19” x 17” x 53.5” 48cm x 43cm x 136cm	15 kW / 15 kW	250 LB / 114 KG
DT-VT-30	Up to 3.25“ 83mm	30 in / 76cm	19” x 17” x 59.5” 48cm x 43cm x 151cm	20 kW / 20 kW	300 LB / 136 KG
DT-VT-36	Up to 3.25“ 83mm	36 in / 91cm	19” x 17” x65.5” 48cm x 43cm x 167cm	22.5 kW / 22.5 kW	350 LB / 159 KG

Deltech Bottom Loading Vertical Tube Furnaces at a Glance

Model	Tube O.D.	Hot Zone Length	Furnace Dimensions	Power Requirements For 1700° / 1800°	Weight
DT-VTOSD-6	Up to 3.25“ 83mm	6in / 15cm	26” x 21” x 51” 66cm x 53cm x 130cm	3 kW / 7.5 kW	220 LB / 100 KG
DT-VTOSD-12	Up to 3.25“ 83mm	12in / 30cm	26” x 21” x 57” 66cm x 53cm x 145cm	10 kW / 15 kW	225 LB / 116 KG
DT-VTOSD-18	Up to 3.25“ 83mm	18in / 46cm	26” x 21” x 63” 66cm x 53cm x 160cm	12.5 kW / 15 kW	300 LB / 136 KG
DT-VTOSD-24	Up to 3.25“ 83mm	24 in / 61cm	26” x 21” x 69” 66cm x 53cmx 175cm	15 kW / 15 kW	350 LB / 159 KG
DT-VTOSD-30	Up to 3.25“ 83mm	30 in / 76cm	26” x 21” x 75” 66cm x 53cm x 191cm	20 kW / 20 kW	400 LB / 182 KG
DT-VTOSD-36	Up to 3.25“ 83mm	36 in / 91cm	26” x 21” x81” 66cm x 53cm x 206cm	22.5 kW / 22.5 kW	600 LB / 273 KG