What is the difference between an ABS threaded nipple and adaptor? Do I need to a coupler to join an adaptor or nipple to pipe?
A nipple has the same OD as pipe and will insert into a coupler (or any other fitting). You need a coupler/or other fitting to join a nipple to the system. Pipe will insert directly into an adaptor – you do not need a separate fittings to join an adaptor to the system. • How long do I need to wait before I can use / pressure test an ABS installation (or – How long does ABS Solvent Cement take to fully dry or cure?)?+ You should wait a minimum of 24 hours for joints to cure before using / pressure testing.
