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How Much Pressure Can Brass Fittings Hold

How Much Pressure Can Brass Fittings Hold

Brass fittings are an incredibly versatile and strong component of any plumbing system. But just how much pressure can they hold? It’s a question that many homeowners and contractors want to know before deciding to use brass fittings in a project. Let’s dive into what makes brass so strong and how it stands under pressure.

What Makes Brass Strong?

Brass is made up of copper and zinc, forming an alloy that is incredibly strong yet easy to work with. This combination makes brass one of the most popular for plumbing and other industrial applications, as it has superior strength, durability, corrosion resistance, wear, and tear. Also, brass is malleable enough to be bent into various shapes without breaking or cracking.

How Much Pressure Can Brass Hold?

The answer to this question depends on the type of fitting you are using. Generally, standard-sized brass fittings are rated for pressure up to 300 psi (pounds per square inch). That said, some speciality fittings available on the market can handle pressures up to 800 psi or more. It’s important to note that even though the strength rating may be higher than 300 psi on those speciality fittings, it’s best practice to stay within 300 psi to ensure a safe installation.


Understanding exactly how much pressure brass fittings can hold is essential when deciding whether or not they should be used in your plumbing project. Standard-sized brass fittings are generally rated for pressures up to 300 psi, while speciality models can handle higher pressures – although it’s best practice not to exceed 300 psi for safety reasons. Thanks to their combination of strength and malleability, brass has become one of the most popular metals for plumbing projects, both big and small. Understanding its properties will help you make an informed decision when selecting your next set of fixtures!

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