• The Standard Suction Strainer has a pot molded 70 durometer PVC Body and 304 Stainless Screen. 
• Nylon Suction Strainers have an Injection Molded Black Nylon Body with 304 Stainless Screen and a true threaded 1/2", 3/4" or 1.0" Female NPT connection.

PVC Suction Strainers have Friction Fit Ribs, NOT a true Female NPT Thread. 

      #663 Size is called out as a 1/4", 3/8", 1/2", 3/4", 1.0" or 1.5" Female NPT.

      #250 Size is called out according to the 1/4", 3/8" Hose Barb or OD Tube that goes into the strainer.

      #300 Size is called out according to the 3/8" Hose Barb or OD Tube that goes into the strainer.