Shanghai Shang Xia Valve Sales Co., Ltd.   

Shanghai Shang Xia Valve Sales Co., Ltd is the German Schroder (Schroeder) distributor valve limited company is the only authorized in the Greater China region only authorized responsible for marketing and technical support, was founded in 2008. The German Schroder valve limited company -- Schroeder Valves GmbH & Co.KG, founded in 1889, professional commitment to the production of the pump outlet valve automatically and then Xunhua (valve for pump protection), and received a number of world patent, its products are widely used in the world, is widely used in the field of professional world and recognized as the most mature technology is the most secure and stable product. Germany Schroder automatic recirculation valve company's main pump is a protection device. It automatically on centrifugal pump (especially in conveying hot water medium) partial cavitation damage at low load operation may appear in the pump body to protect. Once the pump flow is lower than the preset flow, bypass opened completely to ensure that the required minimum flow pump. Even if the main road is completely closed, i.e. the main road traffic is zero, the minimum flow can also automatically cycle through the bypass. Through the integration of multilevel throttling pressure valve bypass by reducing the. Scope of application: nuclear power plant boiler feed water, cooling water, condensate oil equipment, chemical industry and refrigeration equipment of drinking water supply, waste water treatment system for offshore platform consumption system and water injection pump steel plant phosphorus loading, hot rolling, cooling system of ship boiler water pump, fire fighting system of paper mill pulp pump snow making equipment etc. The German Schroder valve in 1950 invented and began producing mechanical automatic recirculation valve, is one of the earliest production facility in Germany in the valve industry, is the cradle of the most advanced valve technology. Schroder valve has always maintained a dominant position in the technical field, completely tailor-made, each project according to the pumps of all parameters design manufacturing valves, and pumps running performance guarantee completely, to protect the pump and pipeline without cavitation, no vibration, no overheating. Using the Schroder valve rotary valve patent bypass structure, to ensure that the minimum flow bypass without leakage, greatly reducing energy waste equipment use, improves the safety level of the factory. Schroder valves fully in accordance with the pump parameters for customers to provide the best solution, to meet the requirements of the use of different conditions, to ensure the safe operation of the equipment of the factory. The mid fifty's, Schroder valve for solving the leakage problem of the first generation of bypass valve technology, R & D bypass spool technology, second generation upgrade valve technology -- rotating ball valve bypass structure developed in the early sixty's, this revolutionary technology successfully, which completely solves the problem of the first generation technology produced by the bypass control rod impact type drive shaft sleeve rod motion jitter and leakage, the Schroder valve quality Yuejin world leading industrial field of pump valve. In the global automatic recirculation valve factory, only Schroder valve has been maintained only in Germany the production and processing, and the whole performance of the actual test on valve using a pump group, ensure that each valve performance parameter completely and pump performance curve of the agreement after the product can be manufactured. At present, European and American engineering companies and well-known international pump in providing valve products to the developed industrial businesses, they are used in pump valve structure technology of the valve, so as to ensure long service life and prevent the loss of energy, to meet customer requirements for safety, stability, energy saving and other high-quality supporting. Nuclear power plant in the nuclear island China in using the Schroder valve technology, Schroder is the only Chinese valves have HAF604 nuclear certified automatic recirculation valve factory. Schroder valves second generation upgrade products in the use of global performance fully shows its quality technical reliability and stability.