D743H Y Liquid-moving hard-sealed butterfly valve is a new product with strong applicability of metal hard sealing butterfly valve. It adopts a combination of hydraulic actuator and flange hard sealing three-core butterfly valve, and adopts precision J-shaped elastic sealing ring and three-eccentric multi-level metal hard sealing structure. It is widely used in industrial pipelines of gold, electricity, petrochemical, water supply and drainage and fluid load and municipal construction. The valve adopts three eccentric structure, the valve seat and disc plate sealing surface are made of different hardness and stainless steel, with good corrosion resistance, long service life, the valve military mail two-way sealing function, the product in line with the national GB / T13927-92 valve pressure test standard. The hydraulic actuator takes the hydraulic butterfly valve as the power source, outputs the pressure oil through the two-way gear pump, and sends it to the oil cylinder through the control of the oil circuit integrated block to realize the reciprocating movement of the piston. At the same time, the valve shaft and the valve plate are rotated to achieve the purpose of regulating the flow rate. Widely used in metallurgy, mining, electric power, building materials, medicine, chemical industry and other industries in the production process, can remotely control the pipeline medium flow or field control. Product features: two-way zero leakage, reliable sealing, can be used in high vacuum system; self-tight sealing, ultra-low torque, quick opening and closing, labor saving; simple structure, small volume, easy maintenance, easy to install; long service life, suitable for frequent switching, durable; with extended precision composite bearing and valve stem anti-flushing safety design.

Valve model: D743H-16, D743Y-25

Nominal diameter: DN50~DN1200

Nominal pressure: PN1.0,1.6,2.5, Class125,150,300

Media is allowed to flow to: one-way or two-way

Drive mode: liquid movement

Applicable temperature: -20~100℃; -20~380℃

Applicable medium: oil, natural gas, hydrogen, carbon monoxide, carbon dioxide, oxygen, reforming gas, catalytic cracking dry gas, transformation gas, water, steam, etc.

The valve switch has no leakage times of 100,000 times

Hydraulic transmission is a transmission mode in which the liquid acts as a working medium to realize the energy transmission.

 Hydraulic transmission is widely used in industry, with the improvement of related technology, hydraulic transmission application in the field of valve, valve hydraulic device is hydraulic transmission to control valve opening and adjust a kind of equipment hydraulic valve is liquid pressure to open and adjust the structure of the valve unit, working medium for hydraulic oil. The hydraulic valve is composed of control, power and actuator. The control part of hydraulic valve refers to various valves, such as pressure control valve, flow control valve, direction control valve and electrical control system, etc. The control part is driven by the partial operation. The power part of the hydraulic valve mainly includes the motor, pneumatic motor, hydraulic pump and fuel tank and other devices. The effective power generated by the operation of the motor and pneumatic motor is converted into the fluid pressure through the power part, transmitted to the actuator and realized as the action of the control part, that is, the opening and closing or adjustment of the valve. The actuator of the hydraulic valve is divided into hydraulic cylinder actuator and hydraulic motor actuator, which are different in structure. The former structure is suitable for reciprocating linear movement, while the latter is suitable for rotary movement.

Different control parts of D743H / Y hydraulic hard seal butterfly valve shall be matched with suitable actuators. The purpose of the hydraulic valve: the operation of the hydraulic valve must be coordinated with the hydraulic transmission system, that is, the laying of special pipelines, so the hydraulic valve is less used in the ordinary working environment. Generally speaking, the hydraulic valve is widely used in sewage treatment, petrochemical industry, natural gas and mine slurry treatment. With the hydraulic signal device, it can realize long-distance automation and centralized control.