How do I know what size upvc socket I have?

UPVC Plumbing Pipes Fittings Elbow

Understanding UPVC Sockets

UPVC (unplasticized polyvinyl chloride) is a popular material for plumbing and drainage systems. Knowing the size of a UPVC socket is crucial for proper fit and functionality. This guide will help you determine the correct size of your UPVC socket.

UPVC Fittings

Importance of correct size

The correct size of the UPVC socket ensures a secure and leak-free connection. Improper sizing can cause leaks, inefficiency and potential damage to your plumbing system. Therefore, measuring accurately is vital for the longevity and efficiency of your installations.

Tools needed for measurement

To measure a UPVC socket you will need some basic tools. These include a tape measure, calipers and a ruler. Having these tools on hand will make the measuring process simple and accurate.

Measure the diameter

Diameter is a key dimension when identifying the size of a UPVC socket. Use a tape measure or caliper to measure the internal diameter of the socket. Make sure the measurement is taken at the widest point of the internal opening for accuracy.

Measure depth

Socket depth is another critical measurement. Insert a ruler into the socket until it reaches the bottom. Record the depth of the opening at the base of the socket. This measurement helps determine fitting length compatibility.

Identify standard sizes

UPVC sockets are available in standard sizes, usually measured in millimeters. Common sizes include 32mm, 40mm, 50mm and 110mm. Once you have your measurements, compare them to these standard sizes to identify your plug size.

Example of measuring a UPVC socket

Let’s take an example. Suppose you measure the internal diameter of a socket and find that it measures 50mm. You then measure the depth and record it as 60mm. By comparing these measurements with standard sizes, you can conclude that you have a 50mm UPVC socket, as the internal diameter corresponds to this standard size.

Checking manufacturer specifications

Sometimes the easiest way to determine size is to check the manufacturer’s specifications. Many UPVC fittings carry size information. If available, this can save you time and ensure accuracy without the need for manual measurements.


Knowing your UPVC socket size is essential for any plumbing project. By understanding the importance, using the right tools and following the measuring steps, you can accurately determine the size of your UPVC socket. This ensures a proper fit and efficient operation of your plumbing system.

If you have read this article and have any questions, please feel free to contact IFAN. Below is our contact information:

Whatsapp:+86 13373827623
Email:[email protected]

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