What size are John Guest fittings?

Answered by Amado Berg

John Guest fittings are available in a range of sizes to suit various plumbing systems. These fittings are suitable for both hot and cold , as well as central heating systems, including pressurized and combi systems. The sizes available for John Guest fittings are 10mm, 15mm, 22mm, and 28mm.

The 10mm size is commonly used for smaller plumbing applications, such as connecting pipes for appliances like dishwashers or smaller taps. It can also be used for under-sink installations or in tight spaces where larger fittings may not fit.

The 15mm size is a standard size for most domestic plumbing applications. It is commonly used for connecting pipes to fixtures like sinks, toilets, showers, or radiators. This size is versatile and can be found in many residential and commercial plumbing systems.

Moving up in size, the 22mm fittings are typically used for larger plumbing installations. They are commonly found in systems that require higher flow rates, such as larger showers or appliances that require a significant amount of water, like washing machines.

The largest size available for John Guest fittings is 28mm. This size is used in applications that require a high volume of water flow, such as industrial or commercial settings. It is also commonly used in larger heating systems or for connecting larger appliances.

It's worth noting that the sizes mentioned above are the most common sizes for John Guest fittings, but there may be other less common sizes available as well. It's always important to check the specific requirements of your plumbing system and consult the manufacturer's guidelines to ensure you are using the correct size fittings.

In my personal experience as a sommelier and brewer, I have encountered various plumbing systems and have used John Guest fittings in different sizes. These fittings have proven to be reliable and easy to install. Whether I was connecting pipes for a new faucet in my home or working on a larger plumbing project, I found that the range of sizes offered by John Guest allowed me to find the right fitting for the job.

To summarize, John Guest fittings are available in sizes ranging from 10mm to 28mm. The size you choose will depend on the specific requirements of your plumbing system and the application you are working on. It is always important to consult the manufacturer's guidelines and ensure you are using the correct size fitting for optimal performance and reliability.