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<br /> <br /> <br />Drain Hose threads to <br />have Vacuum Breaker <br />installed. <br /> <br />Vacuum Breakers <br />Pressure Type <br />pva <br /> <br />PVB <br /> <br /> <br /> <br />Control Valves <br /> <br />PressureVa(;QumBreaker.on lawn sprinkler system must be installed at least 12 inches abovehigbest <br />sprinkler outlet . and may he subject to constant static pressure. <br /> <br />Lawn Sprinkler <br />Page 3 of 4 <br />