Pumping System Both the main pumping circuit and "S" valve circuit are open-circuit, each is driven by a pump, which makes the two circuits independent to each other. The simplified system, results in a long service life, high reliability and easier troubleshooting. Proximity switch used to control the direction of the main pumping makes changeover steady and reliable. Main components of the hydraulic system are supplied by famous brands Rexroth in German. The equipped special safety devices, promise the system to be more reliable. The assignment oil duct uses at the same time the permanent pump and the accumulator feed, the commutation is agile. In unexpected halt's situation, the accumulator may make the spare energy migration "S" the tube valve in order to help clean delivery cylinder,and has the energy conservation function. The lubrication system uses the centralism self-lubrication, before the start, the manual pump over lubricant, after the start, changes over to with the hydraulic fluid self-lubrication, saves the lubricant amount used. Driven System Adopted domestic advanced diesel engine, excellent performance, high reliability and timely services. Independent engine pumping system provides a strong impetus. With the characteristics of low fuel consumption, low emissions and low noise, diesel engine equipped with automatic throttle and off switch to stop pumping, the diesel engine will automatically be on deceleration. Electronic System. With the 24-volt DC power and programmable controller, safe, reliable, and the input and output can show fault troubleshooting simple. Used for non-contact proximity switches,which ensures the reliable exchange.