The Toro 150 psi In-Line Jar-Top Valve has flow control that allows you to conserve water by fine-tuning the amount of water pressure to individual zones. It has wide flow and pressure ranges from 0.25 - 30 gallons per minute and 10 - 150 psi. A jar-top opening allows easy access to the pressure-activated, double-beaded diaphragm. The valve can be bled internally or externally for system upgrades and maintenance.