原文：
采用自己的核心技术并融合国外xxxx的先进设计理念，西安泵阀总厂有限公司研发制造的国内先进的高技术含量的最小流量回流阀，已成功应用于多个工程项目，实现了最小流量回流阀的国产化，并成功走向国际市场，改变了我国在此领域长期受制于国外的局面。 最小流量回流阀又称自动再循环阀，用于离心泵最小流量的自动再循环，安装于泵的出口，为离心泵提供最经济、最可靠的保护，能使泵在低负荷运行时有小量介质再循环，保证泵的最小流量，维持泵的稳定运行，防止离心泵在低负载下由于过热、噪音、振动而造成损坏。最小流量回流阀还具有止回功能，防止介质倒流。 西安泵阀总厂有限公司研发制造的这种最小流量回流阀为自力式控制阀，不需要外部供给能源。与传统的控制阀系统相比，该阀具有以下显著优势：在前期产品采购、安装调试以及后期的维护方面，具有显著的成本优势，总体费用比传统控制阀系统低2/3；旁路流量可调节控制，阀门整体运行具有高经济性；xx机械结构，依靠流量控制阀门，不需要额外的能源；仅仅只需一个阀就可以实现对泵的保护，不需其他额外组件，因此不受系统故障影响，几乎免维护。 多年来，我国的最小流量回流阀主要依赖进口，成本高居不下且供货周期长，制约了我国相关项目的经济性和建设周期。 2008年8月，西安泵阀总厂有限公司为神华宁煤集团烯烃合成气制丙烯项目一次性供货达106台，创单个项目国产最小流量回流阀用量之最。其中{zd0}口径达到DN700毫米，开创了国产最小流量回流阀口径的新纪录。 去年底，西安泵阀总厂有限公司承担了越南（煤头）化肥项目15个工位、13个规格型号共计31台最小流量回流阀的供货任务，实现了我国最小流量回流阀从进口向出口的逆转，中国制造的最小流量回流阀成功走向了国际市场。

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译文：
With its own core technology and integration of advanced foreign well-known design company, Xi'an Valve Factory Co., Ltd. R & D manufacture advanced high-tech content, the minimum flow return valve, has been successfully applied to many projects to achieve the minimum flow return valve made of, and successfully enter the international market, changing the subject to China's long-term foreign countries in this field situation. Minimum flow rate, also known as automatic recirculation valve return valve for centrifugal pump minimum flow of auto recycling, installed in the pump discharge, the pump provides the most economical and reliable protection, the pump can run at low load when a small volume of medium recycling, to ensure the pump's minimum flow to maintain the stable operation of the pump, to prevent the centrifugal pump at low load as overheating, noise, vibration and damage. Minimum flow return valve also has a return function, to prevent the media back. R & D Valve Manufacturing Factory Co., Ltd. Xi'an this minimum flow return valve for the Self-control valve, no external supply of energy. With the traditional control valve system, this valve has the following notable advantages: in the pre-product procurement, installation and maintenance of late, has significant cost advantages, the overall cost than traditional control valve system with low 2 / 3; bypass flow Adjustable control valve operation with a high overall economy; complete mechanical structure, relying on flow control valve, no additional energy; only one valve can be achieved only on the pump protection, without other additional components, so susceptible to system failures, virtually maintenance-free. Over the years, the minimum flow return valve in China mainly relied on imports, the cost remains high and the long lead times, constrained the country's economy and related project construction period. August 2008, Xi'an Valve Factory Co., Ltd. for the Shenhua Ningxia Coal olefin propylene gas supply up to 106 units a one-time items, the highest single item of domestic consumption of the minimum flow valve back to the most. The largest diameter to DN700 mm, creating a minimum flow return valve diameter made a new record. Late last year, Valve Factory Co., Ltd. Xi'an commitment of the Vietnamese (coal head) Fertilizer Project 15 station, 13 standard models of a total of 31 sets minimum flow return valve supply tasks and achieve a minimum flow return valve from China imported to reversal of export China-made valve minimum flow back into the international market successfully.