Often need to check the tightening of the fastening bolt connection parts are: - concrete block, rod bolts and nuts - cylinder connector and chassis bolts -S valve spout attachment bolts - the master cylinder is connected at both ends of the bolts - each pump inlet port, exhaust port and pipeline connecting bolt - the valve housing and hopper bolts - mixing blade bolts - valve box mounting bolts - each pump and pump seat, seat and floor pump, hydraulic motor and bearing bolts - conveying pipe clamp bolt. Valve at the valve blockage at the blockage is formed gradually, mainly due After pumping concrete, there is no time to use high-pressure water wash, resulting in concrete left in the tube, Over thickening concrete pump, the accumulation of consolidation, causing blockage. Remedy: After pumping concrete, be sure to use high-pressure water pump and S tube rinse. When flushing is invalid, can knock solder to remove the residue, until thoroughly clean. Remedy: In the event of blocked tubes, should be taken repeatedly, reverse pump method immediately, and gradually make the concrete pump outlet suction hopper back to re-mix before delivery. Also available mallet percussion methods concrete pump rental, combining positive and reverse pump, making it clear; when the above approach is invalid concrete pump spare parts, indicating a serious blockage. After identifying clogged section, the tube is removed large concrete pumps, wind or a hammer with high pressure or high pressure water rinse until thoroughly clean up after, followed by a good pipeline continue pumping concrete work. Henan concrete pump, Luoyang Great (certified), concrete pumps and equipment provided by the Luoyang Great Locomotive Company. Luoyang Great Locomotive Equipment Co. (www.lybotxsb.com) is Luoyang, machining leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Luoyang Great leadership with the staff warmly welcome all inquiries negotiations to create a better future for Great Luoyang.