For takeoff connections that exceed 900 psi or 800 degrees F, what size must they be?

In high-pressure piping systems, specific guidelines dictate the size of takeoff connections based on the pressure and temperature of the application. When connections exceed 900 psi or 800 degrees Fahrenheit, the industry standards require that these connections be of a larger diameter to ensure safety and functionality.

The choice of 3/4" fulfills the necessary criteria, allowing for adequate flow and reducing the risk of potential issues such as pressure drops or material failure. In high-pressure systems, there is a critical need for components that can withstand the extreme conditions without compromising the integrity of the system.

Larger sizes, such as 1", or 1-1/2", may not necessarily be required for connections at these pressure and temperature thresholds, as they would also lead to increased cost and potentially complicate the installation without providing additional benefits. Meanwhile, a size of 1/2" would be insufficient, as it does not meet the necessary specifications for high-pressure applications. Therefore, the established size of 3/4" is appropriate for these conditions, ensuring both safety and performance in the piping system.