Are Anti Scald Valves Required

Many reported incidents of serious burns and shocks received while showering have prompted the requirement for anti-scald shower valves, thermostatic mixing or pressure-balancing shower control valves (see Figure 408.3a). Both types of valves regulate the water temperature by tempering hot water with cold water.

Are tempering valves mandatory?

Tempering valves are required for all new builds, bathroom and ensuite renovations, or when a replacement hot water system and piping installation is carried out.

Are mixing valves required?

Master mixing valves are not mandated in the model plumbing codes, but it is good design practice for a constant hot water supply temperature. Domestic hot water systems are unique in that a change of equipment in one part of the system can and most likely will affect the performance of another part of the system.