From wellhead and pipeline isolation to refinery processing and LNG handling, QUEST Flow Controls delivers valves built to perform where failure is not an option. Our products are manufactured from carbon steel, stainless steel, duplex and super duplex alloys, and are available with firesafe designs, anti-static features and fugitive emission packing to meet the stringent demands of hydrocarbon service. Every valve undergoes 100% pressure testing and full serialization for complete traceability. Whether managing sour gas, abrasive slurries or cryogenic fluids, QUEST provides bidirectional bubble tight shutoff, extended cycle life and full compliance with API, ANSI and ASME standards.