To help engineers and procurement personnel quickly search and verify, we have meticulously compiled the basic parameters and all core part models, names, and specifications for OTC Daihen Genuine Water-Cooled Welding Torches. This list has been professionally proofread to correct spacing and scanning errors from the original manual (such as DSU O 001) and optimized the original checkmark distinctions into an intuitive “Applicable Material” column, ensuring your procurement models are perfectly accurate.
I. OTC Water-Cooled Torch Basic Parameters Comparison Table
| Model Parameters | WTW4000 Series (Carbon Steel) WTAW4000 Series (Aluminum) |
WTW5000 Series (Carbon Steel) WTAW5000 Series (Aluminum) |
|---|---|---|
| Rated Current | 400A (CO2) / 350A (MAG/MIG) | 500A (CO2) / 450A (MAG/MIG) |
| Duty Cycle | 100% | |
| Rated Voltage | ≤ 113V | |
| Applicable Gas | CO2 / MAG / MIG | |
| Gas Flow Rate | 10 ~ 20 L/min | |
| Gas Pressure | 0.15MPa ~ 0.35MPa | |
| Torch Switch Rating | 24V DC | |
| Applicable Wire Diameter (mm) | Carbon Steel: (0.8), (0.9), (1.0), 1.2 Aluminum: (1.0), 1.2 | Carbon Steel: 1.2, (1.4), (1.6) Aluminum: 1.2, (1.6) |
| Cooling Method | Liquid Cooling | |
| Optional Cable Lengths | 3.0m (SBD) / 4.5m (MBD) / 6.0m (LBD) | |
*Note: The model suffixes SBD, MBD, and LBD represent torch cable lengths of 3 meters, 4.5 meters, and 6 meters, respectively.
II. Water-Cooled Torch Parts Exploded View Diagram
III. Spare Parts Real-Time Search Table (Standard Parts)
You can directly enter the Part No. (Order No.), Name, or Material in the search box below, and the table will automatically filter the results for you:
| Part No. (Order No.) | Symbol | Name & Specifications | Applicable Material |
|---|---|---|---|
| SA5216 | A | Conical Nozzle (ID 16mm) | Carbon Steel / Aluminum Universal |
| EB3212 | B | Contact Tip – Copper (1.2mm M8×10×30) | Dedicated for Carbon Steel |
| EB3212AL | B | Contact Tip – Copper (1.2mm M8×10×30) | Dedicated for Aluminum |
| DSR3212-3 | C | Steel Liner (1.0~1.2mm × 3.0m) | Dedicated for Carbon Steel |
| DR3412-3 | C | Graphite Liner (1.0~1.2mm × 3.0m) | Dedicated for Aluminum |
| SD5002 | 1 | Gas Diffuser (Phenolic) | Carbon Steel / Aluminum Universal |
| SC5001 | 2 | Tip Body (M8×25) | Carbon Steel / Aluminum Universal |
| SF5245 | 3 | Curved Torch Neck (45°) | Carbon Steel / Aluminum Universal |
| EG0001 | 4 | Hanger / Hook | Carbon Steel / Aluminum Universal |
| EJ0003 | 5 | Trigger | Carbon Steel / Aluminum Universal |
| EHO131 | 6 | Front Torch Housing | Carbon Steel / Aluminum Universal |
| ES0102 | 7 | Front Spring Guard | Carbon Steel / Aluminum Universal |
| SL5030 | 8 | Cable Assembly (3.0m) | Carbon Steel / Aluminum Universal |
| YKS0002 | 9 | Rear Spring Guard | Carbon Steel / Aluminum Universal |
| HDH0202-28.5 | 10 | Rear Torch Housing (Hole 28.5) | Carbon Steel / Aluminum Universal |
| Q210406 | 11 | Screw (M4×6) | Carbon Steel / Aluminum Universal |
| DP3001 | 12 | Torch Housing Lock Nut | Carbon Steel / Aluminum Universal |
| DSU0001 | 13 | OTC Plug (Water-Cooled Type) | Carbon Steel / Aluminum Universal |
| Q531518 | 14 | O-Ring (3.15×1.8) | Carbon Steel / Aluminum Universal |
| Q504018 | 15 | O-Ring (4×1.8) | Carbon Steel / Aluminum Universal |
| DU3013 | 16 | Nut | Carbon Steel / Aluminum Universal |
| SW5131 | 17 | Water Hose Quick Connector | Carbon Steel / Aluminum Universal |
| BW0239R | 18 | Water Plug (Red) | Carbon Steel / Aluminum Universal |
| BW0239B | 18 | Water Plug (Blue) | Carbon Steel / Aluminum Universal |
IV. Optional Parts Quick Search Table (For Specific Wire/Material)
In addition to the standard components above, depending on your actual torch length, material requirements, and wire diameter, you can freely select the following models of contact tips and liners:
| Part No. (Order No.) | Symbol | Name & Specifications | Applicable Material |
|---|---|---|---|
| SA5214 | A | Conical Nozzle (ID 14mm) | Carbon Steel / Aluminum Universal |
| SA5315 | A | Tapered Nozzle (ID 15mm) | Carbon Steel / Aluminum Universal |
| SA5120 | A | Straight Nozzle (ID 20mm) | Carbon Steel / Aluminum Universal |
| EB3208 | B | Contact Tip – Copper (0.8mm M8×10×30) | Dedicated for Carbon Steel |
| EB3209 | B | Contact Tip – Copper (0.9mm M8×10×30) | Dedicated for Carbon Steel |
| EB3210 | B | Contact Tip – Copper (1.0mm M8×10×30) | Dedicated for Carbon Steel |
| EB3216 | B | Contact Tip – Copper (1.6mm M8×10×30) | Dedicated for Carbon Steel |
| EB3208L | B | Contact Tip – Chrome Zirconium Copper (0.8mm M8×10×30) | Dedicated for Carbon Steel |
| EB3209L | B | Contact Tip – Chrome Zirconium Copper (0.9mm M8×10×30) | Dedicated for Carbon Steel |
| EB3210L | B | Contact Tip – Chrome Zirconium Copper (1.0mm M8×10×30) | Dedicated for Carbon Steel |
| EB3212L | B | Contact Tip – Chrome Zirconium Copper (1.2mm M8×10×30) | Dedicated for Carbon Steel |
| EB3216L | B | Contact Tip – Chrome Zirconium Copper (1.6mm M8×10×30) | Dedicated for Carbon Steel |
| EB3210AL | B | Contact Tip – Copper (1.0mm M8×10×30) | Dedicated for Aluminum |
| EB3216AL | B | Contact Tip – Copper (1.6mm M8×10×30) | Dedicated for Aluminum |
| DSR3212-4.5 | C | Steel Liner (1.0~1.2mm × 4.5m) | Dedicated for Carbon Steel |
| DSR3212-6 | C | Steel Liner (1.0~1.2mm × 6.0m) | Dedicated for Carbon Steel |
| DSR5216-3 | C | Steel Liner (1.2~1.6mm × 3.0m) | Dedicated for Carbon Steel |
| DSR5216-4.5 | C | Steel Liner (1.2~1.6mm × 4.5m) | Dedicated for Carbon Steel |
| DSR5216-6 | C | Steel Liner (1.2~1.6mm × 6.0m) | Dedicated for Carbon Steel |
| DR3412-4.5 | C | Graphite Liner (1.0~1.2mm × 4.5m) | Dedicated for Aluminum |
| DR3412-6 | C | Graphite Liner (1.0~1.2mm × 6.0m) | Dedicated for Aluminum |
| DR5416-3 | C | Graphite Liner (1.2~1.6mm × 3.0m) | Dedicated for Aluminum |
| DR5416-4.5 | C | Graphite Liner (1.2~1.6mm × 4.5m) | Dedicated for Aluminum |
| DR5416-6 | C | Graphite Liner (1.2~1.6mm × 6.0m) | Dedicated for Aluminum |
| SD5001 | 1 | Gas Diffuser (Ceramic) | Carbon Steel / Aluminum Universal |
| SC5002 | 2 | Tip Body (M8×29) | Carbon Steel / Aluminum Universal |
V. Genuine Parts Procurement & Technical Support
As the core components of continuous high-current operations, the quality of water-cooled torch consumables such as contact tips, nozzles, graphite liners, and steel liners directly determines the stability of the welding process. We guarantee to provide 100% genuine original parts and keep ample stock to ensure your production is uninterrupted.