The basic working principle
PP Compression Fittings work through mechanical compression. A nut is tightened onto the fitting body. This compresses a ferrule against the pipe. Example: a wrench is used to tighten the nut.
The three main components
Every compression fitting has three parts. A body, a nut, and a ferrule. The body has the pipe stop and sealing surface. The nut forces the ferrule to compress. PP Compression Fittings rely on these components.
Step-by-step: pipe insertion
First, cut the pipe squarely and cleanly. Slide the nut and ferrule onto the pipe. Insert the pipe fully into the fitting body. PP Compression Fittings need full pipe insertion.
Step-by-step: positioning the ferrule
Position the ferrule near the fitting body. The ferrule must be correctly placed. PP Compression Fittings require careful ferrule placement.
Step-by-step: tightening the nut
Tighten the nut using a wrench. This presses the ferrule into the fitting body. The ferrule compresses against the pipe. PP Compression Fittings seal through compression.
The sealing mechanism
The ferrule deforms slightly and grips the pipe. It also seals against the fitting body. This creates a dual seal. PP Compression Fittings use both grip and seal.
Example: coupling installation
A plumber joins two PP pipes. He uses PP Compression Fittings with a coupling. He inserts the pipes and tightens the nuts. Example: a permanent, secure joint.
Example: connecting to a valve
A valve is installed on a PP pipe. PP Compression Fittings make the connection. The nut is tightened to seal. Example: a secure valve connection.
No heat or glue required
The process is purely mechanical. No heat, adhesives, or solvents are needed. PP Compression Fittings are easy to install.
Tools needed
A wrench is the only tool required. The nut is turned until the joint is sealed. PP Compression Fittings require simple tools.
Tightening force
Tighten the nut firmly, but do not overtighten. Excessive force can damage the fitting. PP Compression Fittings need moderate pressure.
Final working summary
PP Compression Fittings work through mechanical compression. A nut pushes a ferrule onto the pipe. This creates a secure seal. The pipe must be fully inserted. No heat, glue, or special tools are required. PP Compression Fittings offer a simple and reliable connection method. Example: they are a trusted choice for many plumbing tasks.