Hydraulic models, Lu Hydraulic (certified), hydraulic force provided by the Texas Lu hydraulic machinery plant. Texas Lu force hydraulic machinery plant (www.luliyeya.com) is specialized in "jacks, electric pumps, hand pumps, cylinders," the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Lu Jingli. If the fuel tank vent valve is set, then the hydraulic cylinder manufacturers can look at pipe joints loose, and then a few more times to exhaust action. But pay attention to the injection, if the cylinder pressure joints, the selection pressure joints are more secure because it is easy to operate, in general, the best exhaust high, so the effect is better. If neither of the fuel tank, exhaust operation can be carried out, the specific operation is: let the piston movement in one direction, pause hydraulic plant for some time, and then it moves to the other direction, then pause some time, so repeatedly Texas hydraulic cylinders, you can drain the air in the cylinder. What is a single-acting hydraulic cylinder piston rod is only one end of the call into the single-acting hydraulic cylinders, engineering machinery, single rod basically a hydraulic cylinder, the piston rod on the machine, such as flat grinding classes are single out, outside circular grinding cylinder are double out. Very simple, look at the cylinder port, there is an effect on a single, two double-acting is meant: hydraulic pressure can make the piston or plunger movement in one direction, the opposite direction must rely on force to achieve, external: Spring force or weight.