Pressure hand pump built-in mechanism to ensure the stable pressure accumulator SYB Series manual pumps, fuel cap seal acts like a safety valve to prevent over-pressure tank; built-in dual pressure relief valve to prevent pressure overload. Relief check valve prevents the load within the free fall; dual piston design, two-speed feature reduces the pressure times; manual control valve is easy to control the security decreased slowly when unloaded; the high pressure hand pump for no power and compressed air The field work for any product is by no means will only operate enough, we want more of an understanding of the level of the product, so that when the product fails or is damaged, you can find the reasons for timely advance to avoid the losses to a minimum . So we want a detailed understanding of many aspects of the product. In fact, the manual is to provide pressurized hydraulic fluid to a hydraulic components for hydraulic transmission, is a pump. Its function is to convert mechanical energy into the power machine of the pressure energy of the liquid high pressure hand pump, the output flow rate can be adjusted as needed is called variable displacement pump, the flow rate can not be adjusted is called a metering pump. And because the outer edge of the pressure vessel manual hydraulic hand pump prices, the inner diameter of the cylinder will produce elastic or elastic-plastic deformation of the expansion in the cylinder swell place, the working fluid pressure in the cylinder chamber through the piston seal to the low pressure chamber streaming, and lose pressure hand pump, causing serious internal leakage. When the cylinder inside diameter swell, swell outside diameter must be synchronized, the outside diameter of the cylinder in the axial position with a ruler, measure against the cylinder wall, the cylinder wall to ascertain the situation swell. Hand pump production, quality speed hydraulic (certified), hand pump provided by Dezhou City mass-velocity hydraulic machinery factory. Dezhou City mass-velocity hydraulic machinery plant (www.dzzhisu.com) (www.dzzhisu.com) is a leader in Dezhou, hydraulic equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Speed ??hydraulic leadership in quality with the staff warmly welcome all inquiries negotiations to create a better quality speed hydraulic future. You can also access (www.dzzhisu.com/supply_details_46181085.html), for more information about the company.