Installation involves two steps: First, insert the FTG (male) end of the SurePress street reducer into the larger press fitting’s socket. For instance, push the male end into a ¾″ press coupling or tee where normally a ¾″ pipe would go. Make sure it’s fully seated against that fitting’s internal stop. Then press that joint using the larger fitting’s press sleeve (essentially, you press the outer fitting which in turn crimps onto the reducer’s male end, sealing it via the O-ring in the outer fitting). Next, insert the smaller copper pipe into the reducer’s press end and press that side as usual. After both press operations, you’ll have a secure reduction. It’s crucial to press the outer fitting onto the reducer and the reducer onto the smaller pipe to complete the assembly.