Where does a low-pressure safety and relief valve typically discharge to?

A low-pressure safety and relief valve is designed to open and relieve excess pressure from a boiler to protect against overpressure conditions, which can be hazardous. The correct discharge point for these valves is typically to the atmosphere.

Discharging to the atmosphere ensures that any steam or gas released does not accumulate in an enclosed space, which could create dangerous pressure build-up or risk of explosion. This safe dispersal into the air allows for effective pressure reduction while minimizing risks to both equipment and personnel.

Discharging to a drain, as suggested in the selected answer, is not standard practice since this could lead to contamination or other safety risks associated with releasing pressurized steam or gas into a drainage system. Ensuring that the safety and relief valve discharges into an open, safe area is crucial for effective operation and safety compliance.