25 PSI Heavy Duty Pressure Regulator, can withstand 70 psi coming into it. 25 pounds of pressure is great for pot systems, hanging baskets to keep your pressure low and constant. The pressure of your water is very important when it comes to drip irrigation. This item can not be left under pressure. When using a timer, the pressure regulator should be installed after the timer. Above or below the ground, heavy duty regulators withstand severe water hammer. Female Hose Thread x Male Hose Thread.