Toro 570Z-12LPNS Low Pressure No Side Outlet Check Vavle these valves also feature a

these valves also feature a flow range from

Once the water is discharged the pressure drops and a stainless steel spring automatically retracts the cover to its closed flush position

And most important

The ring also provides leverage to make attaching the dripline easier

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Toro 570Z-12LPNS Low Pressure No Side Outlet Check Vavle these valves also feature aLow Pressure Pop up Spray Pop up Height: 12 in. No Side Inlet Nozzle Not Included The 570Z is ideal for small to medium size landscape areas and intricate designs. The PR and PRX models are ideal for applications with high or varying operating pressure, including long lines and slopes. The X Flow feature restricts water loss by 99% if damaged.