Valve opening and closing too quickly will cause near instantaneous fluid pressure fluctuations (water hammer), the peak is usually able to reach pipes more than six times the normal pressure, but also because the system water hammer wave reflection serious concussion;
2013年12月12日星期四
Standardized prefabricated manifold forms, changed some of the limitations of the past in the field of direct production and installation
Philatelic oil, set to close the ball valve petrol station inside and oil and gas gathering pipelines, are used in the form of standardized prefabricated valve, changed in the past in the field of direct production and installation of some limitations. Project site assembly is relatively reduced, adverse effects of climate and other factors is small, while the dismantling of prefabricated valve interchangeability with regularity and speed up the construction progress. Reasonable to avoid the aerial assembly. Narrowing the range of operations, reducing the security
Stainless steel needle valve . Prefabricated valve materials are mostly carbon steel, stainless steel; in the number of low-pressure pipelines primarily to a relatively small proportion of high-pressure pipelines; presence of a large number of saddle mouth open system workload; butt weld seam in the form of the main;
Instrument valve manifolds for welding high. To ensure the quality and performance of our valve products and processes using reasonable prefabricated welding backing, automatic welding cap surface welding process. And distortion factors to be produced during welding and lifting analysis to take effective control measures.
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