Ritchie Part Number 12575 - Red Valve 1/2". Pictured as #16 in the parts diagram for the Ritchie OmniFount 2 Special. The red valve 12575 is the standard valve for the OmniFount 2 Special for moderate water pressure, 40-60 psi. Also available is a white valve 12574 for low water pressure, 5-40 psi - OR - a green valve 13597 for high water pressure, 60-80 psi. The water pressure of your installation may require you to change which valve you are using.