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High-performance hydraulic screw-in cartridge valves

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Zhejiang Huayi Machinery Holding Co., LTD was founded in 2006 (formerly Zhejiang Huayi Machinery co., LTD.). The company is located in Diankou Industrial Town, Zhuji City, Zhejiang province. With a plant area of 12000 square meters we have more than 350 employees with international management system. In 2000, 2005, in 2013 we passed the ISO9001, ISO14001, OHSAS18001 certification, and imported the TS16949 system. Committing to the pursuit of zero defect quality and low-cost manufacturing, we continue to meet customer needs and expectations.

We have been focused on the design and manufacture of precision metal parts since many years,accumulating long-term experience in the valve, used in air condition valve, industrial welding torch and high purity gases.As we know hydraulic valve is not only with high precision, but also needs sustained improvement and verification through many tests. Therefore, we have acquired many high precision machining tools and testing equipments. In order to ensure stable quality, all precision machining process are controlled by ourselves, Each employee takes work very seriously.

All new products have to pass through tests of proof pressure, burst pressure, pressuredrop,pressure holding, transient response characteristics, antipollution,environment(-40~80℃). Each type of valve passed over one million cycles lifetests under 1.2 times of rated pressure. All products haveto pass 100% strict inspection before delivery. The oil cleanliness of our test beds is periodically reviewed and  always maintained at NAS6.