Caps from AFT Fasteners are ideal when selecting water pipe for your residence. Our durable, galvanized malleable iron fittings are 100% pressure tested directly at the factory. They are certified to NSF 61 and lead free law. They are UL and FM listed and made in compliance to ASME standards. The galvanizing is done by a hot dip process which is in accordance to ASTM A153. AFT's caps are available in sizes for all residential water applications. Always check your local plumbing and gas codes before starting any piping projects.