IrrigationKing, RKTS225NSA, 2" Semi-Automatic T Screen Filter - 120 Mesh - 110 GPM
Features:
- Body made of special chemically bonded polymer for durability
- Non-corrosive stainless steel filter mesh
- Easy to install & low maintenance
- Cleaning can be done while in operation
The semi-automatic screen filter has a cleaning feature that uses suction nozzles on the inside of the screen cartridge. It comes with a pressure differential indicator that attaches to the inlet and outlet of the filter body. Once the pressure difference between the inlet and outlet is high enough, a red indicator button will pop up letting you know that it is time to clean the filter.
The pressure differential indicator installs into the threaded brass ports on the front of the filter body. The large piece with the red button goes on the left threaded brass insert (inlet side). The other end goes on the right threaded brass port (outlet side). The lower port is still solid plastic underneath but can be drilled out to add a 1/4" NPT pressure gauge to show the outlet pressure.
The cleaning function is very simple and done while the system is running. Once the red indicator button pops up, slowly open the ball valve at the bottom of the body and crank the handle clockwise and counter clockwise a few times. This will raise and lower the suction nozzles in a spiraling motion to pass over the entire inside surface of the screen cartridge. Once the pressure differential indicator button goes back down, the cleaning is done and the bottom valve can be closed again.