Product DescriptionOptimized by CAD three-dimensional model of innovative design, beautiful shape compact, modern styling; and the use of practical new materials, new processes, product quality, more reliable performance; multi-standard selection is more affordable; products fully comply with the latest International Standard Technical Specification to meet present and future needs.Product Features(1)Rack and pinion double piston symmetry structure design, rapid and smooth operation, high precision, high output power, rotation by simply changing the position of the piston assembly is obtained in the opposite direction.(2)Extruded high quality aluminum alloy cylinder block, through the hole and the outer surface of the precision machining of hard anodized (anodic oxidation under special circumstances + Teflon coating), longer life, low coefficient of friction.(3)One design, all double-acting and single acting models have the same block and cover, very convenient by adding or removing springs to change the mode of action of the spring.(4)Combined pre-compliance with safety spring group, whether in the field or in the assembly process, are convenient and safe to install or increase or decrease the number of springs.(5)Two separate external side adjusting screw is installed on the valve actuator is more accurate and convenient, the valve opening and a valve closed position, when adjusted for full stroke adjustment screw is additionally configured in two long end cap.(6)Multifunctional position indicator, a visual indication of the field, in line with VDI / VDE3845, NAMUR standard slot, and outputs can be installed all accessories, such as limit switch box, electrical locator, position sensors.(7)Air interface complies NUMAR standard, can be installed directly NUMAR standard solenoid valve.(8)Composite pad on the back of the rack and piston guide rings and bearing output shaft and so on in order to prevent metal-to-metal friction and increase lubricity to low friction, longevity noodles.(9)All fasteners are made of stainless steel, long-term corrosion resistance.(10)The new connecting portion in line with GB standards ISO5211, DIN3337 (F03-F25) is installed so that products have interchangeability, versatility.