Codes & Standards

A Brief History of Plumbing Codes

The plumbing industry has a long history of plumbing code and standards development. The oldest code dates back to the Hammurabi code,...

ASSE 1055 Chemical Dispensers

When it comes to a lack of understanding in the cross-connection control world, I don’t think there is another product that is...

Has Common Sense Left the Building?

I just got off the phone with a contractor demanding to know what code section, in either the Uniform or International Plumbing Code, clearly...

Understanding the NSF/ANSI 53 Water Filtration Performance Standard

Throughout the United States, multiple reports about elevated lead levels found in drinking water in homes, schools, and businesses have emerged. Consumers can protect...

ASSE Certified Water Heaters

The ASSE International Product Listing Program can now certify water heaters with integral water temperature safety controls to ASSE’s new suite of water heater...

Understanding Cross-Connection Control for Fire Protection Systems

With very few exceptions, almost every water-based fire protection system requires some form of backflow protection or cross-connection control. On the residential...

RP/DC Assemblies

ASSE 1013, Reduced Pressure Principle Backflow Prevention Assemblies (RP); ASSE 1015, Double Check Backflow Prevention Assemblies (DC); ASSE 1047, Reduced Pressure Principle Detector Backflow...

The Water Demand Calculator Leaves Home

Instantaneous peak water demand is an important consideration when designing a new building. The peak water demand affects the scale and cost...

How Chemical Dispensing Equipment Works

Chemical dispensing equipment, as defined in ANSI/CAN/ASSE/IAPMO 1055-2020, Performance Requirements for Chemical Dispensers with Integral Backflow Protection, consists of several independently operating components with...

Backflow Prevention and Thermal Mixing Valves

According to the ASSE International Plumbing Dictionary, working pressure is the maximum pressure in a water piping system allowable under normal working conditions. Likewise,...