Failure when high pressure hand pump outlet pressure of high pressure hand pump when changing from Gao prone to pressure switching to almost zero pressure, or quickly switch from zero pressure rose to Gao press, certainly in the high pressure hand pump shut commutation produce hydraulic shock switch. At the moment the manual pump is very prone to failure, such a failure in our attention to the next is fully capable avoided. At the same time, the electromagnetic valve high pressure hand pump switch quickly, no buffer time, they forced the hydraulic shock intensifies, lest the solenoid valve replaced three electro-hydraulic valve, since the electro-hydraulic valve in the liquid valve switching time is adjustable ssd1 hand pumps, reversing a certain buffer time, the outlet pressure of the pump there is a change up or down the process, mention Gao commutation stability, thus avoiding significant pressure shocks. Loop way valve is unloading the pump is still a certain pressure value (0.2 ~ 0.3Mpa), for control of the oil maneuvering. The above is the high pressure hand pump at the commutation prone to failure, because the hydraulic system does not allow manual pump hydraulic shock phenomenon, precision impact will affect any small parts. For hydraulic system for hand pump manufacturers are generally Gao pressure, high flow systems, valves with M type more, because the hydraulic system, the valves are generally manually, valve buffer switching is achieved by the operator. High pressure hand pump valve is a throttle valve port opening, manipulating personnel in the manipulation of hand 抦 should be made gradually open or close the valve port sbd20d manual pump, avoiding the formation of hydraulic shock. Our strong technical force, advanced equipment and technology skills, testing means complete, stable and reliable product quality, can provide you with safe, high quality and efficiency of hydraulic machinery products. I plant to first-class service, scientific management, advanced equipment and reliable quality suppliers, professional staff, scientific and reliable design, manufacturing excellence, timely and efficient service, providing first-class products and services to users. Features: small size, light weight, compact, simple operation, high pressure, low flow ... hand pump manufacturers, Lu of the hydraulic hand pump provided by the Texas Lu of the hydraulic machinery plant. Texas Lu force hydraulic machinery plant (www.luliyeya.com) is an industry leader in Shandong Dezhou, hydraulic machinery and parts, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Lu Hydraulic leadership with the staff warmly welcome all inquiries negotiations to create Lu Hydraulic better future.