What is the purpose of slip-joint fittings in plumbing?

Slip-joint fittings are specifically designed to create connections that can be easily adjusted or removed, which provides significant flexibility in plumbing systems. These fittings accommodate slight misalignments in pipes, allowing for a simple adjustment during installation or repairs. The design typically includes a compression nut and washer, which can be tightened or loosened, enabling easy disassembly without damaging the pipes involved.

This feature is particularly advantageous in situations where access to plumbing may need to change over time, such as under sinks or in tight spaces, allowing for maintenance or remodeling without extensive work to the plumbing system.