In what pattern should bolts on a bell joint leak clamp be tightened?

The correct pattern for tightening bolts on a bell joint leak clamp is a crisscross pattern. This approach is essential because it ensures that the tension on the clamp is distributed evenly around the joint. Tightening in a crisscross manner helps to avoid uneven pressure, which could lead to additional leaks or stress on the pipe.

Using this method allows each bolt to be tightened incrementally, which aids in achieving an even and secure seal throughout the connection. This is particularly important in high-pressure systems, where any misalignment or unevenness could compromise the integrity of the joint.

In contrast, random patterns can lead to uneven pressure and increase the risk of leaks. A circular pattern may also lead to uneven tightening, as it typically emphasizes one side before the other is addressed. A straight line, while it implies an organized approach, does not distribute the force evenly around the joint and might lead to misalignment. Hence, the crisscross tightening technique is the best practice for ensuring a reliable and leak-free joint.