Shanghai Electric gate Z941H-16C Manufacturers

Features: (1) The valve using pressure from the tight seal or valve, valve cover gasket seal structure, safe and reliable. (2) the valve using intermediate double plate with universal roof structure, can automatically adjust the valves and valve seat sealing surface of the goodness of fit, to ensure the valve seal. At the same time this structure and easy maintenance, the valve interchangeability better. (3) electric unit is equipped with a torque control mechanism, field operating agencies and hands, electric switching mechanism. In addition to local operation, it can also perform remote operation, PLC control, 4 ~ 20mA current input and output intelligent control. (4) The manual valve when hit by a manual mechanism or hand wheel is turned, reducing the valve operating force. (5) The valve can be installed in any position the pipeline, while the choice of carbon or alloy steel valves according to temperature of the medium and the medium. Principle; electric valve is simply the use of electric actuator control valve to achieve valve opening and closing. Which can be divided into two parts, the upper part of the electric actuator, the lower half valve. Electric valves are usually connected by electric actuators and valves up, after installation become electric valve. Electric valve use electricity as power to turn electric actuator drive the valve to achieve valve switching, regulating action. So as to achieve the switching of media channels or adjust purpose. Uses: electric valve: for analog liquid, gas and wind system piping medium flow regulation, it is AI controlled. In the control valve of large wind systems can also be used to make two-position switch electric valve control. AI can have a feedback signal that can be controlled by the DO or AO, found relatively large pipe and valve and so on. Electric flange valve analysis: 1. Oil, natural gas wellhead valve oil, natural gas wellhead valves mainly for compliance with US API6A standard single or double plate gate with diversion or non-diversion bore hole parallel Forged gate valve, mud valve, throttle angle, field-specific parallel-regulating valve, oilfield special straight-through check valves, water \ polymer dedicated parallel gate valve, clamp-type parallel valve, pilot valve and check valve . Oil, natural gas wellhead electric valve nominal pressure level is API2000psi, 3000psi, 5000psi, 10000psi, 15000psi, 20000psi; nominal diameter of DN46 ~ 228mm (113 / 16in ~ 9in); temperature class K (-60 ~ 182 ℃ ), L (-42 ~ 182 ℃), P (-29 ~ 182 ℃), R (room temperature), S (-18 ~ 166 ℃), T (-18 ~ 182 ℃), U (-18 ~ 121 ℃ ), V (2 ~ 121 ℃); material requirements for the AA, BB, CC, DD, EE, FF, HH; material properties required by the 36K, 45K, 60K, 75K; product technical requirements according to PSL1 (product specification level 1) , PSL2 (product specification level 2), PSL3 (product specification level 3), PSL4 (product specification level 4). 2. Oil and gas long-distance pipeline valve oil, natural gas long-distance pipeline valves mainly for compliance with US API6D standard single gate or double plate with no diversion diversion hole or holes plate valve; forged steel or cast steel three-body, top entry or full welded ball valve fixed; oil seal or pressure-balanced plug valves; swing or butterfly valve, through the ball valve; pigging valve. These electric valve nominal level of CL150 (PN2.0MPa), CL300 (PN5.0MPa), CL400 (PN6.4MPa), CL600 (PN10.0MPa), CL900 (PN15.0MPa), CL1500 (PN25.0MPa), CL2500 (PN42.0MPa); nominal diameter of DN50 ~ 1500mm (2in ~ 60in); technical requirements for fire resistance test according to ISO10497; electric valve pressure test according to ISO5208. 3. Nuclear Valves electric valves for nuclear power than conventional large-scale thermal power station with an electric valve its technical characteristics and requirements to be high. Valves are generally valve, closing valves, check valves, butterfly valves, safety valves, main steam isolation valves, ball valves, diaphragm valves, pressure reducing valves and control valves; highest technical parameters representative electric valve: maximum diameter DN1200mm (nuclear grade 3 butterfly), DN800mm (2 nuclear main steam isolation valve), DN350mm (nuclear grade 1 primary circuit gate); maximum pressure: about 1,500 pound; maximum temperature: about 350 ℃; medium: Coolant (borated water). Production of nuclear-electric valves requirements: usually in the nuclear industry standard EJ, American ASME, IEEE standard and the French pressurized water reactor nuclear island mechanical equipment design and construction rules RCC-M and the like. Specific types and parameters: a hydraulic drive valve: The valve with its own water pressure pushes the piston to open or close the valve nominal diameter: DN350,400mm; working pressure: PN17.5MPa; Working temperature: 315 ℃. b fully enclosed electric valve: The valve should be closed using a special screen machine, through immersion in the work of the planetary gear mechanism for opening and closing movement of the shutter. The valve nominal diameter: DN100 ~ 800mm; Working pressure: PN2.5 ~ 45.0MPa; working temperature: 200 ~ 500 ℃.