Forge Furnaces
for metal bending, metal forging, blacksmithing, occasional heat treating
Download Product Manuals
Johnson Gas 122 Direct Spark Ignition No Safety
Johnson Gas 122 Direct Spark Ignition Thermocouple Safety Controller
Johnson Gas 122 Direct Spark Ignition Thermocouple Safety
Johnson Gas 122 Direct Spark Ignition Ultra Violet Safety Controller
Johnson Gas 122 Thermocouple Safety Control
122 Lining
122 Double Width Lining
122 Forge Lid Lining
Johnson Gas 133 Direct Spark Ignition Thermocouple Safety Controller
Johnson Gas 133 Direct Spark Ignition Ultra Violet Safety Controller
Johnson Gas 133 Electronic Ignition No Safety
Johnson Gas 133 Forge Pilot Safety
133 Lining
133 Double Width Lining
NO. 122 AND NO. 133
Forge Furnaces
Heavy gauge steel construction

Number 122

Number 133
Versatile Johnson Forge Furnaces provide the high, fast heat needed in heavy equipment shops, welding and metal forming shops, metal fabricating plants, auto spring manufacturers, blacksmithing, farm equipment and industrial maintenance shops, and school vocational shops.
Forges can be used for a variety of applications including metal bending, metal forging, occasional heat treating, metal forming and sharpening, preheating and stress relief of weldments.
The forge body is made of heavy gauge steel construction with cast iron burner manifold and special steel tie-rod reinforcement. Fire boxes are heavily insulated and super duty hard-burned firebrick is used on all wearing surfaces. Gas and air adjustments are convenient to the operator.
Johnson Forge Furnaces come complete with quiet, powerful Johnson Blower, swinging adjustable refractory lid, adjustable front tool rack for supporting pieces, solenoid safety valve that shuts off gas when blowers are turned off, and exclusive Johnson Automatic Spark Ignition System. The need for matches is eliminated. Press a button and the furnace light automatically.
Model No.133 is equipped with four burners (end burners may be turned off for smaller jobs when desired). The No.122 has two burners.
Specifications:
Furnace Number |
Firebox Size (Inches) |
Overall Size (Inches) |
Burners |
Blower Number |
Gas Connect. (Inches) |
Gas Input |
Approx. Shipping Weight |
||||
L | W | D | L | W | H | No. | Pipe Size | BTU/hr. | Lbs. | ||
133 | 27 | 4-1/4 | 7 | 41 | 20 | 30 | 4 | 1203 | 1 | 400,000 | 510 |
133 Double Width | 27 | 8-3/4 | 7 | 41 | 20 | 30 | 4 | 1203 | 1 | 400,000 | 510 |
122 | 13-1/2 | 4-1/4 | 7 | 27-1/2 | 20 | 30 | 2 | 1218 | 3/4 | 200,000 | 340 |
122 Double Width | 13-1/2 | 8-3/4 | 7 | 27-1/2 | 20 | 30 | 2 | 1218 | 3/4 | 200,000 | 340 |
133 Double Length | 54 | 4-1/4 | 7 | 74 | 20 | 48 | 8 | 2-1203 | 1-1/2 | 800,000 | 1200 |
133 Triple Width | 27 | 13-1/2 | 7 | 41 | 29 | 48 | 8 | 2-1203 | 1-1/2 | 800,000 | 900 |
133 Special | 36 | 18 | 7 | 41 | 36 | 48 | 12 | 2-1203 | 1-1/2 | 1,200,000 | 1190 |
133 Double Length, Double Width |
54 | 8-3/4 | 7 | 80 | 30 | 48 | 8 | 2-1203 | 1-1/2 | 800,000 | 1200 |
Gas pressure: 4-1/4″ to 14″ W. C. Nat. Gas; 11″ W. C. LP Gas