Ritchie Part Number 11101 - Red Valve 3/4" for MODERATE PRESSURE 40-60 psi. Pictured as #7 in the parts diagram for the Ritchie WaterMatic 300. The water pressure of your installation may require you to change which valve you are using.

NOTE - The green valve 15377 is the standard valve that comes from the factory for the WaterMatic 300 to ensure adequate fill rate.