The 2015 Uniform Plumbing Code touches on the various methods to prevent backflow and back shiphonage in section 603.3, but diving a bit deeper could be useful.
Zurn’s 375ASTDAR stainless-steel replacement reduced-pressure detector assembly and 350ASTDAR stainless-steel replacement double-check valve assembly are available in sizes from 2 1/2” to 10”.
Last month, Plumbing & Mechanical interviewed Russ Chaney, CEO of The IAPMO Group, about his organization that develops the Uniform Plumbing, Mechanical, Swimming Pool and Solar Energy Codes and tests and certifies plumbing and mechanical products in the United States and overseas.
