Features HANLKA technology and flexible adjustment mechanism arbitrarily control a variety of single and double seat performance stable application of advanced technology to avoid the leakage of electric single (double) seat control valve, equipped with PS, 3810, ZAZ, DKZ series of straight stroke electric actuator, without reprovision servo amplifier has an input control signal (4-20mADC or 1-5VDC) and single-phase power to control the operation to achieve the pressure, flow, temperature, level and other parameters of regulation, with small size, light weight, and even line is simple, the advantages of a small amount of leakage, but the anti-unbalance force is small, it should not work before and after the high pressure valve. They can be widely used in electric power, metallurgy, petroleum, chemical industry, light industry, environmental protection and other sectors of industrial process control systems. Technical parameters structural principle: Through casting valve nominal diameter: 20-300mm Nominal pressure: PN1.6,4.0, 6.4MPa Connection: Flange JB78-59, JB79-59 Body Material: HT200, ZG230-450, ZG1Cr18Ni9Ti, ZG0Cr18Ni12Mo2Ti room temperature type: -20 ℃ - + 200 ℃ heat dissipation type: -40 ℃ - + 450 ℃ gland forms: Bolt Clamp Packing: V-type PTFE packing, flexible graphite, stainless steel bellows valve body in the form of: double oriented single-seat piston valve flow characteristic: equal percentage, linear features, quick opening valve body material: 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti