Hand-Tightening:

• Initial Alignment: Begin by carefully threading the fitting by hand. This initial step is crucial for ensuring the threads are properly aligned, which helps prevent cross-threading. Cross-threading can damage both the fitting and the component it is being attached to, leading to leaks and the potential need for costly repairs.
• Ensuring Smooth Fit: Hand-tightening allows you to feel the fit and alignment of the threads. If any resistance or misalignment is felt, it’s easier to correct it at this stage before applying further torque. A smooth and proper hand-tight fit indicates that the threads are engaging correctly.
• Avoiding Over-Tightening: By starting with hand-tightening, you reduce the risk of immediately over-tightening the fitting. Over-tightening can lead to thread stripping, deformation, and a compromised seal, all of which can cause leaks or fitting failures.

Torque-Tightening:

• Use of Torque Wrench: Once the fitting is hand-tightened and properly aligned, switch to a torque wrench. A torque wrench is designed to apply a specific amount of torque to the fitting, ensuring consistency and accuracy.
• Manufacturer Specifications: Refer to the manufacturer’s specifications for the recommended torque value. This value is typically provided in the product documentation and is crucial for ensuring the fitting is neither too loose nor too tight. Each type of fitting and material may have different torque requirements.
• Applying Correct Torque: Using the torque wrench, apply the specified torque value. It’s important to do this gradually and evenly. Apply the torque in a smooth motion to avoid jerking or sudden movements that could affect the accuracy of the reading.
• Avoiding Damage: Proper torque application ensures that the fitting achieves a secure seal without causing damage. Over-tightening can crush seals, distort threads, and lead to material fatigue while under-tightening can result in leaks and loosening of the fitting under pressure.