Being under a strain does not bother Sure Flow Equipment. The company makes industrial valves and strainers. Its valve products include butterfly, ball, knife gate, foot, and check valves. The company makes basket, flanged, socket welded, and threaded strainers among others types. Sure Flow also offers custom valve, strainer, and pressure vessel manufacturing services. Founded in the early 1990s as S.F. Equipment, the company changed its name to Sure Flow Equipment in 2000. CEO John L. Wordsworth owns the company, which has operations in the US and Canada.