D971X smart electric adjusting butterfly valve use integrated structure, input control signal（4-20mADC or 1-5VDC）and single-phase power, can control work, strong performance, small size, light weight, reliable performance, large flow capacity, for normal temperature、clean media, using valve plate with soft sealing(rubber ring 、PTFE ring) to reduce leakage(reach 0.01%), high-temperature high-pressure can use three eccentric hard sealing valve body. Indicate when order. Actuator equipped with UNIC、PSQ、HQ、CH electronic electric actuator according to users’ requirements. Widely used in food, environmental protection, light industry, petroleum, chemical, teaching equipment, papermaking, power and other automatic control system