Pressure Reducing Valves

Some pressure-reducing valves can be adjusted, while others are factory-set to a specific pressure level. At Sprinkler Warehouse, our water pressure regulators come with an adjustable knob on the side, which allows you to set the preferred pressure levels. Turn it clockwise to increase pressure or counterclockwise to decrease pressure.

A pressure-reducing valve is typically installed on the main water line to reduce high incoming pressure to a safe, consistent level for the entire system. A pressure regulator, on the other hand, is often used in specific zones, often for drip irrigation, to maintain a lower, precise pressure suited for emitters.

If your water pressure is still high after installing a pressure-reducing valve, it may be due to incorrect sizing or installation issues. Many PRVs are adjustable, so the set pressure may need to be lowered using the adjustment screw. Debris inside the valve can also prevent it from regulating properly. Additionally, if the PRV is installed backward or downstream of a branch line, it won’t control pressure effectively.

Replacing a pressure-regulator valve in an irrigation system is a pretty straightforward job. After shutting off the water and draining the system, start by removing the old valve. It may need to be sawed out if it used a slip connection with PVC cement. Next, install the new valve. Align it properly with the flow direction, then thread it or glue it into place. Let any glue connections cure, then turn the water back on and check for leaks.