half S-trap

half S-trap

In plumbing, same as P-trap.
References in periodicals archive ?
(The Sears catalog sold every part you'd need for your home, and in fact, you could buy the precut home itself, ready to assemble!) But over the next 25 years the S-trap was gradually replaced by the "half S-trap" or what we now call the "P-trap," named because it sort of looks like the letter "P" lying on its side (Fig.