Image Bayco® Classic 3000-Series Swing Check Valve Round TTMA Flange Markets Transportation Jump to Section Product Options Related Products Product Options Part Number Length Flange Size Seal Material 3000B 5-5/8" 3" Black Nitrile Rubber Aluminum 3000BSP 5-5/8" 3" Black Nitrile Rubber Aluminum 3000N 5-5/8" 3" Metal-to-metal Aluminum 3000S 5-5/8" 3" Red silicone Aluminum 3000SP 5-5/8" 3" Metal-to-metal Aluminum 3000SSP 5-5/8" 3" Red silicone Aluminum Related Products Image Bayco® Classic 3000-Series Swing Check Valve Female NPT Image Bayco® Classic 3000-Series Swing Check Valve Square TTMA Flange Image Swing Check Valve Repair Kit Image TTMA Flange Gasket