API 6A Forged Steel High Pressure Plug Valve for Oilfield Wellhead Product Description Plug Valve is based on the U.S. FMC, SPM company technology for digestion and absorption and technological innovation in the production of low-torque plug valve series products, the valve body is made of high-quality high-strength alloy steel forging.The valve body is made of high-quality high-strength alloy steel forging. The valve body is made of high-quality high-strength alloy steel