Groco part # ARG-501-B Cast Strainer Cap, without Label. Fits 1/2 Inch and 3/4 Inch ARG Strainers Prior to Serial Number 010901

The Groco ARG-501-B is a Cast Strainer Cap, without Label. Fits 1/2 Inch and 3/4 Inch ARG Strainers Prior to Serial Number 010901. For Strainers After This Serial Number See Groco ARG-501-C. for a Groco Pump.