JAKI non-lubricated and sleeved plug valve is designed for the most corrosive and severe chemical services. This plug valve contains a polymeric sleeve, which is inserted in the valve body. The tapered and polished plug acts like a wedge and presses the sleeve against the body. The PTFE sleeve has a low coefficient of friction and it acts as a lubricant to reduce friction between the plug and the body. This cavity-free design provides a tight shutoff with positive seal. The valve can safely and efficiently handle gas and liquid fuel and can also be used as reliable on-off and throttling device in a wide variety of demanding service.