Zahroof Valves, Inc. (ZVI) is an innovative company, headquartered in Houston, Texas, which has developed and markets the revolutionary StraightFloTM (SF) Valve for use in reciprocating gas compressors. The SF Valve delivers a step change in compressor valve performance, serviceability, and reliability. Thanks to these proven, measured improvements, ZVI is able to guarantee a 20% improvement in valve losses and a 100% increase in service intervals, with a 10-year warranty on the valve housing.