The 800P brings the superior durability and efficiency of a 2" 800 Series Control Valve to SR75 and SR100 end guns operating with a booster pump. When the booster pump is turned on, the added pressure causes the valve to open. This eliminates the need for a troublesome solenoid that is prone to plugging and failure. However, the 800P can also be used with a solenoid on unboosted end guns.
The valve includes a special ball drain/vent that should be installed either in the booster pump volute or the valve jacket to ensure proper pump priming (see installation instructions for details).