Deublin 2440-001-306-254 and 2420-001-141180 Product Selection Guide and Replacement Considerations

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Deublin 2440-001-306-254 and 2420-001-141180 Product Selection Guide and Replacement Considerations

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Deublin 2440-001-306-254 and 2420-001-141180 Product Selection Guide and Replacement Considerations

This guide covers the Deublin 2440-001-306-254 and 2420-001-141180 rotary unions. Both belong to the Deublin 2400 series, specifically designed for cooling water transmission in continuous casting machines (CCM). They feature in-shaft mounting, self-supporting design, and balanced mechanical seals. The primary differences lie in connection size and flow capacity.

Core Parameter Comparison

| Feature | Deublin 2440-001-306-254 | Deublin 2420-001-141180 |

| :--- | :--- | :--- |

| Core Design | Single or dual passage, in-shaft mount, self-supporting, balanced mechanical seal with silicon carbide/silicon carbide faces | Same as 2440, same product platform |

| Housing Connection | G 1"-11 (BSPP 1-inch parallel thread) | G 3/4"-14 (BSPP 3/4-inch parallel thread) |

| Rotor Connection | O-ring seal, fits 70.8 mm (approx. 2.787") bore | O-ring seal, fits 46 mm (approx. 1.811") bore |

| Max Flow (Water) | 110 L/min (29.1 GPM) | 23 L/min (6.1 GPM) |

| Max Pressure (Water) | 10 bar (150 psi) | 10 bar (150 psi) |

| Max Temperature (Water) | 121 °C (250 °F) | 121 °C (250 °F) |

| Max Speed | (Not specified) | 100 RPM |

| Primary Materials | Bronze housing, stainless steel rotor and supply tube | Bronze housing, stainless steel rotor and supply tube |

Selection Recommendations

Selection primarily depends on your existing piping connection size and required cooling water flow rate:

- Choose 2440-001-306-254 if your equipment uses a G 1-inch connection and requires higher flow capacity (up to 110 L/min).

- Choose 2420-001-141180 if your equipment uses a G 3/4-inch connection with lower flow demand (up to 23 L/min). This model is also rated at 100 RPM, which is an important consideration if your application has speed constraints.

Key Considerations for Replacement Products

When sourcing an alternative or replacement product for these models, pay close attention to the following:

- Verify Installation Dimensions – This is the most critical step. Request a detailed dimensional drawing from the supplier and compare it against your actual mounting space. Even if the thread size matches (G1" or G3/4"), differences in overall length (approx. 185mm for 2440, approx. 183mm for 2420), housing diameter, or other critical dimensions can prevent proper installation.

- Confirm Performance Specifications – Beyond dimensions, ensure the replacement meets your requirements for flow, pressure, temperature, and especially speed. For example, if your process requires speeds at or above 100 RPM, confirm the alternative can deliver that performance.

- Check Seal Materials and After-Sales Support – For water media, standard seals are typically silicon carbide. If your water quality has high hardness or contains particulates, inquire about more wear-resistant seal options (e.g., tungsten carbide). Also, confirm warranty terms and availability of spare parts (especially seal kits) before purchasing.

Could you tell me the specific connection size on your existing equipment? That would help me determine which model is the better fit for your application.