Xylem-Hoffman Specialty 400278 Spring Pressure Pilot 5-60 PSI SPS-60

A spring-loaded pressure pilot valve used in hydronic heating and cooling systems is the Xylem-Hoffman Specialty 400278 Spring Press. Pilot 5/60 SPS-60. It serves as a safety precaution to avoid pressure buildup over acceptable bounds. The valve has a pilot orifice and a spring-loaded, and it is mounted in the pipework. System pressure pulls against the diaphragm as it rises. When the pressure reaches a certain level, the contracts and opens the pilot hole. By doing this, extra water can escape the main valve and return to the reservoir, lowering pressure and averting possible equipment damage, pipe breaks, and safety risks.