China valve market with the continuous development of science and technology, but also to the high-tech, high-parameter, strong corrosion-resistant, high-life direction. Technology at home and abroad based on the analysis of valve and valve market demand both at home and abroad of the analysis, developed in recent years all sectors of industrial valves and valves with high-tech industry development trend and investment direction, are as follows:
1. Oil and gas well-head valve devices
Oil, natural gas wellhead valves are mainly used in the U.S. API6A standard single gate or board, there is no diversion diversion hole or holes parallel steel gate valve, slurry valve, angle-type throttle, oil-specific parallel-type regulating valve, oil check valve exclusive of straight-through processing, water injection \ polymer dedicated parallel valve, the clamp-type parallel valve, pilot-type safety valve and check valve.
Oil, natural gas wellhead valves with nominal pressure level for API2000psi, 3000psi, 5000psi, 10000psi, 15000psi, 20000psi; DN for DN46 ~ 228mm (113/16in ~ 9in); temperature rating of 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 performance requirements by 36K, 45K, 60K, 75K; products according to technical requirements PSL1 (product specification level 1) , PSL2 (product specification grade 2), PSL3 (product specification grade 3), PSL4 (product specification level 4).
2. Oil and natural gas valve with long-distance pipeline
Oil, natural gas long-distance pipeline with the main valve in order to comply with standards of the United States Kun PI6D single gate valve or board, there are holes or diversion diversion valve hole of the plate; steel or cast steel three-body, or to fit the entire welded ball valve fixed ball; oil seal or pressure balanced plug valves; Swing check valve or butterfly valve, pass the ball check valve; pigging valve.
Nominal pressure level of these valves for the CL150 (PN2.0MPa), CL300 (PN5.0MPa), CL400 (PN6.4MPa), CL600 (PN10.0MPa), CL900 (PN15.0MPa), CL1500 (PN25.0MPa), CL2500 (PN42.0MPa); DN for DN50 ~ 1500mm (2in ~ 60in); technical requirements for fire resistance test in accordance with ISO10497; valve pressure test in accordance with ISO5208.
3. Nuclear power valve
Nuclear power than conventional valve with a large thermal power station valve its technical characteristics and requirements higher. Valves are generally valve, valve, check valve, butterfly valve, safety valve, main steam isolation valve, ball valve, valve, relief valve and control valves, etc.; the highest representative of the technical parameters of the valve as follows: the largest diameter DN1200mm (the butterfly valve 3 nuclear), DN800mm (nuclear two of the main steam isolation valve), DN350mm (nuclear main circuit of a valve); maximum pressure: level of about 1500 pounds; maximum temperature: about 350 ℃ ; medium: the coolant (water diboride) and so on. The production of nuclear grade products require valve: usually by the nuclear industry standards EJ, U.S. ASME, IEEE standards and the French island of pressurized water reactor nuclear design and construction of machinery and equipment rules, such as RCC-M.
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