What type of valves are no longer permitted to be installed?

Cold weather valves, historically used to prevent freezing in sprinkler systems, are not permitted for installation under current codes and standards. These valves function by relying on mechanical components that can malfunction or become ineffective in extreme conditions. The shift away from cold weather valves is driven by a desire for systems that ensure reliability and safety, especially in climates that experience freezing temperatures.

Modern sprinkler system designs prioritize the use of freeze-resistant components and materials that inherently reduce the risk of freeze-related failures. This evolution reflects a broader emphasis on maintaining consistent performance across a range of environmental conditions without relying on the specific mechanisms that cold weather valves employ.

Manual valves, electric valves, and emergency shutoff valves still play critical roles in sprinkler systems, each serving specific purposes for operational control, maintenance, and safety, which is why they remain compliant with current installation standards.