Why Does Waste Pipe Come With Different Sizes – 32mm and 36mm – 40mm and 43mm? Understanding the Basics.

Discover the two primary types of waste pipes: push-fit and solvent weld. Each variant boasts distinctive characteristics and applications, providing diverse solutions for various plumbing needs.

Metric vs. Imperial Measurements

Waste pipes can be a puzzle with metric and imperial measurements. Push-fit waste pipes are metric, while solvent weld waste pipes often use imperial measurements. Both are advertised in metric sizes like 32mm, 40mm, or 50mm, they may look the same.

Compatibility with Compression Fittings

Compression fittings work with both types of waste pipes but can be bulkier and more costly. Refer to the size chart or check the pipe for markings to identify the type (look for ABS, indicating a solvent pipe).

Push-Fit Simplicity vs. Solvent Weld Strength

Push-fit pipes utilise fittings with internal seals, eliminating the need for additional sealing. On the other hand, solvent weld pipes necessitate the use of solvent cement, thereby establishing a strong and permanent seal.

No Interchangeability: Choose Wisely

Remember, solvent and push-fit fittings are not interchangeable. Furthermore from the size differences, the materials they are made of also vary.

Moreover, solvent weld pipes and fittings allow for welding using solvent cement.

Chrome Waste Pipes Note

Additionally, chrome waste pipes are available in 35mm and 42mm sizes, necessitating the use of a conversion seal or fitting for proper connection to plastic pipework.

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