Tomoe Valve has enhanced its 847T range of chemically resistant butterfly valves. The extended 847T range benefits from improved sealing performance and strength, and minimal torque under hazardous conditions. The range is used across a wide spectrum of industries including chemical processing, water treatment, food processing and vehicle manufacture. The construction of the range provides sealing properties essential in applications where conditions are potentially hazardous, such as chlorine, gas, corrosive acids, steam, brines and high-purity systems. The seat construction was designed and developed to ensure that there is no mechanical bond between the rubber seat support and the Teflon lining material, eliminating problems of separation and high or variable torque caused by expansion of the lining. Also available from Tomoe is a range of actuation packages that are suited to match the operating requirements of the 847T range of valves.