What is an incorrect method for joining pipes with groove couplings?

Omitting gaskets when joining pipes with groove couplings is an incorrect method because gaskets are essential components that create a tight seal between the pipes and the couplings. They help to prevent leaks and ensure that the system operates effectively under various pressures and temperatures. Without gaskets, the integrity of the connection could be compromised, leading to potential failures in the system. Ensuring that gaskets are used is crucial for maintaining the reliability and efficiency of piping systems in sprinkler fitting applications.

Proper alignment and following the listed combinations of couplings are important practices that contribute to the safety and functionality of the connections. Using correct groove dimensions further guarantees that the couplings fit appropriately, which is vital for the system's performance. These methods are essential for achieving effective and secure joints in piping installations.