What is the maximum distance a temperature and pressure relief valve drop tube can be from the floor?

The maximum distance a temperature and pressure relief valve drop tube can be from the floor is 12 inches. This requirement is in place to ensure that any discharges from the valve are directed safely and effectively to prevent scalding and other hazards. By limiting the height of the drop tube, it helps ensure that any released hot water or steam is contained within a safe distance from individuals and nearby surfaces. This design consideration is crucial for maintaining safety within plumbing systems, particularly in residential and commercial settings, where the risk of injury from released pressure or temperature could be significant.

Standards and codes often dictate these measurements to promote uniformity and safety across plumbing installations, and adhering to them protects both people and property.