Regarding 131R Tee Reducing , The three outlets are different, the main pipe two outlets are different, the branch pipe is also different, and the fluid can be divided into three different sizes of fluid.
Standard: EN10242 / ANSI / ASME B16.3 / DIN2950 / IS0 49 / NBR6943 / IS1879 / BS EN10242
Threaded Standard: EN10226 / ASME B.1.20.1 / DIN2999 / ISO7-1 / ISO228 / IS554 / BS EN10226
Work Pressures: PN25 / 2.5Mpa / 363PSI /CLASS 150 / 31Bar
UL Listed /FM Approved /CE /ABNT /TSE /SNI /ISI
For 131R Tee Reducing, each branch pipe has a different size. Fluid systems use reducing diameters to change the main pipe’s fluid size and, at the same time, change the branch pipe’s fluid size.