What is the maximum inlet pressure allowed for sprinklers?

The maximum inlet pressure allowed for sprinklers is established to ensure optimal functioning and prevent damage to the sprinkler system. Sprinklers are designed to operate efficiently under specific pressure conditions to achieve uniform distribution of water for irrigation or fire protection purposes.

When the inlet pressure exceeds the specified maximum, it can lead to issues such as excessive misting, uneven distribution of water, and even mechanical failure of the sprinkler heads. Maintaining pressure at or below the maximum limit helps ensure that the system operates as intended and extends the life of the equipment.

The choice of 40 pounds per square inch aligns with industry standards set by regulatory bodies and manufacturers to balance performance and durability. This pressure level is generally considered the upper limit to achieve efficient sprinkler operation while minimizing the risk of damage or performance issues.