Metric sizes
PP Compression Fittings are available in metric sizes for international use. Common sizes include 16mm, 20mm, 25mm, and 32mm. Larger sizes are available up to 63mm. Example: a 20mm fitting for a 20mm pipe.
Imperial sizes
In North America, imperial sizes are common. Standard sizes include 1/2 inch, 3/4 inch, and 1 inch. Larger sizes like 1 1/4 and 1 1/2 inches are also available. PP Compression Fittings are available in imperial sizes.
Corresponding pipe diameters
The fitting size must match the pipe's outer diameter. A 16mm pipe requires a 16mm fitting. A 1/2 inch pipe requires a 1/2 inch fitting. PP Compression Fittings match the pipe exactly.
Reducing fittings
Reducing fittings allow connections between different pipe sizes. Common reductions include 20mm to 16mm and 25mm to 20mm. They transition between diameters. PP Compression Fittings include reducing options.
Residential sizes
Homes typically use 16mm, 20mm, and 25mm pipes. In North America, 1/2 inch and 3/4 inch are standard. These sizes are widely available. PP Compression Fittings for residential use are common.
Commercial sizes
Commercial buildings often use 25mm, 32mm, and 40mm pipes. In North America, 1 inch and 1 1/4 inch are common. Larger diameters handle higher flow rates. PP Compression Fittings are available for commercial use.
Large diameter sizes
Large diameters go up to 63mm or 2 inches. These are used for mains and industrial systems. PP Compression Fittings are available in large sizes.
Example: residential plumbing
A home uses 20mm PP pipe for water supply. PP Compression Fittings are 20mm to match. All connections use this size. Example: a complete 20mm system.
Example: commercial building
A commercial building uses 32mm PP pipe for mains. PP Compression Fittings are 32mm for the main lines. Branches use 20mm fittings. Example: a mixed-size system.
Example: irrigation
An irrigation system uses 25mm PP pipe. PP Compression Fittings are 25mm to match. The system is reliable. Example: a complete 25mm system.
Marking and identification
Sizes are marked on the fitting body. Always check the marking before installation. PP Compression Fittings have clear size markings.
Final sizes summary
PP Compression Fittings come in metric and imperial sizes. Common sizes are 16mm, 20mm, 25mm, and 32mm. Imperial sizes are 1/2 inch, 3/4 inch, and 1 inch. Reducing fittings are also available. PP Compression Fittings are available for all applications. Example: choose the right size for your system.