What is the subsequent step after hand-tightening a coupling on the pipe without using a vise?

After hand-tightening a coupling on a pipe, the subsequent step involves selecting two wrenches for further tightening. This technique is commonly used in plumbing and piping work to ensure a secure and leak-free connection. One wrench is used to hold the coupling in place, while the second wrench is used to apply torque, allowing for the necessary tightening without risking damage to the pipe or coupling. This two-wrench method enables precise control over the amount of force applied, which is crucial for ensuring that the connection is firm enough to prevent leaks but not so tight that it causes stress or damage to the components involved.

Using only one wrench would result in a loss of grip on the coupling while trying to tighten it, potentially leading to an ineffective seal. Loosening the coupling is counterproductive after hand-tightening, and using a hammer could cause undue damage to the fitting or pipe. Therefore, employing two wrenches is the correct and safest approach to ensure a secure connection after initial hand-tightening.