Image Strainer with Spring-Loaded Check Valve Jump to Section Product Options Related Products Product Options Part Number Size Female Thread Material BVFS20 1-1/2" NPT Brass BVFS25 2" NPT Brass BVFS35 3" NPT Brass BVFS40 4" NPT Brass Related Products Image Ball Cone Check Valve Female NPT x Female NPT Image Ball Cone Check Valve Male NPT x Female NPT Image Domestic Swing Check Valve Image Safety Check Valve Image Series-C Check Valve Image Spring-Loaded Check Valve