Pressure Activated Bypass Valve 1-1/4"

This valve prevents a steep rise of the pump head and maintains flow at a stable rate. Also ensures only required amount of circulating water is used for hydronic systems. The 1-1/4" valve can be adjusted to any point between 2 and17 ft H2O (60 and 500 mbar). Flow range of 13.5 - 26.9 USgpm (3066 - 6110 L/h).