This Explosion Proof Quarter Turn Electric Actuator is a high-end angular stroke product mainly for explosion-proof series. It has strong sealing and high safety factor.The explosion proof quarter turn electric actuator is one upgrade valve electric actuator of QB part turn electric actuator, which is used normally equipped with 90° turn valves, such as butterfly valve or ball valve, to control the valve on/off. It is die-casting aluminum, which features with small size, light weight, high efficiency, high reliability, high protection class and multi control types. It can be operated on site by manual or electric and remote control. QBR quarter turn electric actuator is used widely in the pipe valves industrial system in the field of petroleum, chemical, metallurgy, power plant and water treatment. QBR quarter turn electric actuator can be produced according to standard type, integral type, explosion proof type, explosion proof integral type and integral regulating type. Its protection class is normally IP67, and explosion class ExdIIBT4.