For manual hydraulic devices have applications users might understand them, their use usually need to use a filter, a lot of first-time users is not a good choice for this in order to better help customers use, professional people need to pay attention to explain their choice as follows: When selecting manual hydraulic main filter, it should be considered to determine the accuracy of the system of oil pollution in key components can tolerate, contaminants rate of the system and working conditions due to factors from pollution damage control point of view, the accuracy of the filter should be able to ensure that the particle size effectively filter element moves closer Vice dynamic oil film thickness, because this size in tablets once entered into the gap deputy campaign manual pump specifications, will cause surface wear member, and the gap increases, so that the size of the larger particles into the gap, cited interest further wear, causing severe wear of the "chain reaction", resulting in the failure element. Also hope that through this knowledge to explain the hand pump wholesale, you can apply for the majority of users play some appropriate help. Manual hydraulic pump rated pressure and rated flow of hydraulic control valves each rated pressure and rated flow and its use should generally be close to the pressure and flow. For high system reliability requirements, should be higher than the rated pressure of the valve using the pressure more. If the rated pressure and rated flow is less than using a manual pump pressure and flow, is easy to cause the hydraulic clamping and hydraulic power and adversely affect the quality of the valve; in order for the system and pressure reducing valve, it should not be far away by the flow less than the rated flow, or easy to produce vibration or other instability. For flow valve, should pay attention to the minimum stable flow. Hydraulic hand pumps, hand pumps Haiyang, cheap mass-velocity hydraulic Dezhou City by mass-velocity hydraulic machinery factory. Dezhou City mass-velocity hydraulic machinery plant (www.dzzhisu.com) (www.dzzhisu.com) strong, credible, in Dezhou hydraulic equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improve the quality of innovative ideas will lead you hand speed hydraulic and into the brilliant, for a better future!