Ward Check Valves With Y Strainer Learn more about our check valves with Teflon® seals and our Ward Y Strainers. 16FL Flanged Stainless Steel Strainers 1 - 2 inch (25 mm - 50 mm) Submit RFQ 16 Strainer Threaded Stainless Steel 1/4 - 2 inch (8 mm - 50 mm) Submit RFQ 816 1/4 - 2 inch (8 mm - 50 mm) Submit RFQ 816FL 1/4 - 2 inch (8 mm - 50 mm) Submit RFQ 816HS 1 inch (25 mm) Submit RFQ