Cutting Nozzle (2-Seat Nozzle) ｜ Stable Flame Control for Enhanced Cut Quality in Oxy-Fuel Cutting

Key Takeaways
• 2 Seats Nozzle ensures uniform gas flow, delivering a stable flame and sharp cut edges
• Suitable for Oxy-Fuel Cutting from general cutting to thick plate applications
• Multiple models available based on fuel gas type, plate thickness range, and compatible Cutting Torch
• Proper nozzle selection helps reduce slag, minimize rework, and extend torch service life

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In the Oxy-Fuel Cutting process, the Cutting Nozzle is a critical component that directly determines flame shape and the direction of cutting oxygen flow. Even with a high-quality gas system and cutting torch, an unsuitable nozzle can cause uneven cut surfaces, excessive slag, and reduced cutting efficiency. The 2 Seats Nozzle is engineered to balance gas flow, providing stable flame characteristics and easy control for industrial applications.

In real production environments, many facilities adjust gas pressure or replace cutting torches but still face rough cut edges. The root cause is often an “incorrect nozzle for the application.” Selecting a 2 Seats Nozzle that matches plate thickness and fuel gas resolves these issues at the source.

The 2-Seat Nozzle is designed to separate and balance the flow of fuel gas and oxygen at optimal ratios. This results in a stable, well-defined flame with precise cutting oxygen delivery, minimizing flame turbulence during operation. As a result, it is well suited for cutting applications that require consistent cut quality and reliable repeatability.

🔷 Cutting Nozzle (2 Seats) Model Details
• 1120N
Gas: Acetylene
Plate thickness: 1–30 mm
Sizes: No. 1 / 2 / 3
Used with M-Type Cutting Torch Z

• 1151N
Gas: LPG
Plate thickness: 3–30 mm
Sizes: No. 1 / 2 / 3
Used with M-Type Cutting Torch Z

• 1220N
Gas: Acetylene
Plate thickness: 1–80 mm
Sizes: No. 1 / 2 / 3
Used with A-Type Cutting Torch Z

• 1251N
Gas: LPG
Plate thickness: 1–80 mm
Sizes: No. 1 / 2 / 3
Used with A-Type Cutting Torch Z

• 1420
Gas: Acetylene
Plate thickness: 100–350 mm
Sizes: No. 7 / 8 / 9
Used with C-Type Cutting Torch Z

• 1450
Gas: LPG
Plate thickness: 100–350 mm
Sizes: No. 7 / 8 / 9
Used with C-Type Cutting Torch Z

2 Seats Nozzles are widely used in fabrication line steel plate cutting, steel structure construction, heavy plate cutting, and field operations where flame stability and easy control are essential. Selecting a 2 Seats Nozzle that matches the Cutting Torch, fuel gas type, and plate thickness range improves Oxy-Fuel Cutting stability, reduces slag, minimizes rework, and enhances overall cost control.

Summary
The Cutting Nozzle (2 Seats) is a small component with a significant impact on cutting quality. Choosing the right model for the application and equipment improves cut accuracy, safety, and overall production efficiency.

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❓ FAQ
Q: How does a 2 Seats Nozzle differ from a standard nozzle?
A: A 2 Seats Nozzle provides more uniform gas flow, resulting in a more stable flame and sharper cut edges.

Q: How should the correct nozzle be selected?
A: Selection should be based on fuel gas type, plate thickness range, and the compatible Cutting Torch model.

📚 Glossary (Key Terms)
Cutting Nozzle: A cutting torch component that controls flame shape and the direction of cutting oxygen flow
2 Seats Nozzle: A nozzle design that separates and balances gas flow for stable flame performance
Slag: Molten metal residue generated during cutting
Oxy-Fuel Cutting: A metal cutting process using oxygen combined with a fuel gas