Electric stainless steel gate valve

Stainless steel electric gate valve responsive, safe and reliable, many of the high control requirements of the plant specifically for the pneumatic instrument control components set compressed air station. Electric is to power. And can control the flow of the device.

Stainless steel electric gate valve dynamic and electrical valve switching speed can be adjusted, simple structure, easy maintenance, the process of action due to the gas itself, the buffer characteristics, not easily damaged due to stuck, but there must be air, and its control system than the electric valve complex.

First, what is the electric valve Electric valve is simply to say that the use of electric actuators control valves, in order to achieve the valve on and off. The upper and lower parts can be divided into two parts, the upper part of the electric actuator, the lower part of the valve.

Electric valve is divided into two kinds, one for the angular stroke motorized valve: the angular actuator of the rotary stroke with the use of the valve to achieve the valve within 90 degrees within the rotating control pipe fluid off; the other is the straight stroke electric valve: Straight trip electric actuator with straight stroke valve to achieve the upper and lower valve plate control fluid flow off. Usually in the high degree of automation equipment supporting the use of.

Second, the electric valve operating principle Electric valve is usually connected by electric actuators and valves, after installation and commissioning to become electric valve. The electric valve uses electric energy as the power to turn on the electric actuating mechanism to actuate the valve, realizes the valve the switch, the adjustment movement. So as to achieve the switch on the pipeline media or adjust the purpose.

Solenoid valve is a kind of electric valve; is the use of electromagnetic coil to generate the magnetic field to pull the spool, which changes the valve body off, coil power, spool to rely on spring pressure back.

Third, the use of electric valves: electric valve: for liquid, gas and air duct system, the flow of the medium analog control is AI control. In the control of large valves and air systems can also be used to do two electric switch control valve.

Electric valve: can have AI feedback signal, can be controlled by the DO or AO, more found in large pipes and air valves and so on.

1. Switch form:

Electric valve drive is generally open or closed action to complete a certain amount of time to do analog, you can do adjustment.

2. Nature of work:

Electric valve drive is generally used motor, more resistant to voltage shock. Solenoid valve is fast opening and fast closing, generally used in small flow and small pressure, requiring a large switching frequency of the local electric valve and vice versa. The opening of electric valve can be controlled, the state has on, off, half open half, you can control the flow of media in the pipeline and the electromagnetic valve can not meet this requirement.

3. Applicable Process:

Electric valve is generally used for regulation, there are switching capacity, such as: fan coil end.

Performance specification

Main parts material

Z940, Z941 The main purpose of the electric gate valve High and medium pressure flange connection gate valve for the nominal pressure PN1.6 ~ 16.0MPa, operating temperature ≤-29 ℃ ~ 550 ℃ oil, chemical, hydraulic, fire power plant piping systems, Cut off or turn on line media. Applicable medium: water, oil, steam, and acid, alkali, ammonia, urea, sulfur-containing natural gas. Mode of operation are: manual, gear drive, electric, pneumatic and so on.

Second, the structure and characteristics:

1, selection of sophisticated, in line with domestic and international standards, the overall quality of the material high.

2, in line with the requirements of advanced standards at home and abroad, sealed and reliable, excellent performance, handsome in appearance.

3, Sealing pair is advanced and reasonable. The sealing surface of the gate and the valve seat is made of Stellite cobalt-base hard alloy with different hardness. The seal is reliable, high hardness, abrasion resistance, high temperature resistance and corrosion resistance. , Anti-scratch performance, long life.

4, the stem after quenching and surface nitriding treatment, a good corrosion resistance, abrasion resistance and abrasion resistance.

5, the use of wedge-shaped flexible gate structure, large diameter set thrust bearings, friction is small, and with the impact of manual, open and close easily.

6, can use a variety of standard pipe flange and flange sealing surface forms to meet the needs of various projects and user requirements.

Third, product standards

1, design and manufacture by GB12234-89

2, the structure length according to GB12221-89

3, the flange size by JB / T79-94

4, valve inspection and testing by GB13927

Fourth, performance specifications

Fifth, the main parts material