All new products have to pass through tests of proof pressure, burst pressure, pressure drop,pressure holding, transient response characteristics, antipollution,environment(-40~80鈩?. Each type of valve passed over one million cycles life tests under 1.2 times of rated pressure. All products have to pass 100% strict inspection before delivery. The oil cleanliness of our test beds is periodically reviewed and always maintained at NAS6.Check Valves factory
website:http://www.dahydraulics-valves.com/
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