KO 22.5

Style: KO 22.5 RM 240V
Sale price$2,382.95 USD Regular price$2,978.31 USD


Lead time is 4-6 weeks.  Ships directly from Manufacturer.   

Shipping will be charged at actual shipping in a separate invoice.   It is best to order this item separately from your other purchases.  Brokerage is included in the price so no need to worry about any additional charges when the Kiln arrives.


 The KO Series of heat treat ovens are designed with a thicker firebrick structure and a maximum temperature of 2400°F. This extra insulation and headroom offers more speed and more power per cubic foot for high mass loads.

​The KO Series heat treat ovens feature side opening doors that don't subject you to the added heat of a drop-down door. They also feature a forward facing door latch that remains cool and is within easy grasp.

The KO's are available in a variety of control choice options as well as the solid state output option (which you want).


SS - Solid State Relay

All KO models are available with our Quiet Drive Solid State Relay option.

A good portion of the KO's success is related to our solid state relay design. Solid state reacts much more quickly than standard mechanical relays which translates into very precise temperature control. Solid state does so without the given, eventual failure of a mechanical relay. We fully expect our solid state relay to last the life of the unit.

 STP  - Set Pro Controller 

The Set-Pro is our economical, 3 button control and features a 4 digit display. It contains 4 program slots to store your favorite heat treat programs. To recall them just select your User number and you're ready to go.

​Programming of the Set-pro is accomplished using Up, Down and Enter keys.

RM - Rampmaster Controller 

The Rampmaster 3 is our traditional full featured control and features a 4 digit display. It contains 12 program slots to store your favorite heat treat programs. To recall them just select your User number and you're ready to go.

TAP - TAP Controller 

The TAP is our premier temperature controller: its wonderfully simple operation, excellent control capability and well laid-out touchscreen just rock. The TAP is, by far, the best performing and best selling heat treat temperature control.

​Nowhere is simple-use more evident than in the single touch needed to access your heat treat programs. Just touch the Start key and all of your programs are immediately displayed for selection. Programs are displayed in full, easy to read text.

PI - Power Interrupt Switch 

Our optional power interrupt switch removes power from all heating elements as the door is opened and reapplies power as the door is closed.

​The switch used for this feature is a true safety switch and is designed specifically for safety applications. Those wishing to enter the oven during use should strongly consider requesting this option as an added measure of safety.

​Kiln Details

Chamber Dimensions 

22.5" Deep x 9" Wide x 5.5" High - 0.65 Cubic Feet

(57.2cm Deep x 22.9cm Wide x 14cm High - 18.4L)

Outer Dimensions 

28" Deep x 20" Wide x 19.5" High (includes the 8" stand)

(71.1cm Deep x 50.8cm Wide x 49.5cm High)

​Maximum Temperature

2400°F (1316°C) 


240 Volts, 15 Amps, 3600 Watts, 60Hz, Single Phase

Power Cord Plug Configuration - NEMA 6-20

Consult with an electrician for proper fuse panel, service wire size, receptacle, and fusing requirements. This model, used for its intended and expected purpose, would not be defined as "continuous use". Continuous use is defined as continuous, full power on for 3+ hours.

Model is available in 200V, 208V, 220V and 230V

Model will operate properly on both 50Hz and 60Hz

​Model not available in 3 phase Delta or Y designs

Shipping Weight

114lb. (51.8 Kg) - Approx.

Shipping Method

​​Freight Truck

NRTL Agency Listing

UV Listed United States and Canada - Designed and Tested to CSA & U/L 499

KH models may contain chemicals known to the State of Calfornia to cause cancer and birth defects or other reproductive harm.





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