4″ Nibco F-918-B L&S Iron Body Horz Swing Check Valve W/Lever & Spring Flanged 125# 4" Nibco F-918-B L&S Iron Body Horz Swing Check Valve W/Lever & Spring Flanged 125# quantity Add to cart Add to quote SKU: 54923 Category: Uncategorized Additional information Additional information manufacturer NIBCO