My local plumbing store claims that code says that kitchen traps should now be 2" and bathroom sinks 1 1/2". At the big-box stores, all 1 1/4" trap kits are labelled "Lavatory," and all 1 1/2" kits are labelled "Kitchen." No 2" trap kits seem to be present at all. Regardless of where I ought to buy my plumbing parts, why the discrepancy?
The people at this supply store tend to lie a lot (claiming chrome-plated brass items are stainless steel, insisting various items are not manufactured just because they don't stock them, and pretending that there is no way to identify a stem of known brand from a photo), so are not a good source of information.
The people at this supply store tend to lie a lot (claiming chrome-plated brass items are stainless steel, insisting various items are not manufactured just because they don't stock them, and pretending that there is no way to identify a stem of known brand from a photo), so are not a good source of information.