A: Hi, John - Yes, the washers are EPDM rubber and the lines are suitable for potable water.
A: Max continuous pressure less than 125psi, max intermittent pressure 180psi.
A: Yes, it is approved for use with potable water
A: I think I stole this item! All 100 of it!
A: Hi, Thrifty Guy - It's a bit unclear why soldering would be needed on this FIP / MIP (threaded) part, but if soldering would be necessary for some part of your installation, you'd want to make sure you use a lead-free solder. Should you need any additional information, we recommend you contact a solder manufacturer. Thanks.
A: In the galvinied age, we just filed the surface flat to make the seal. I do it routinely on old pipe and even on some new one with manufacturing marks to prevent a good seal.