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Hydraulic Pressure Demonstration System Trainers (18 Basic Control Circuits & Over 60 Extended Experiments) Model : HPDT-1860  Downloadale Data Sheet Nowadays water systems play a central role in many fields: "Agriculture", "mechanical industry", "Energy conversion" are only a few of the numerous applications through which water influence and improve our life. Training of skilled technicians able to maintain the operating systems, together with creative engineers capable to find out new applications of water for civil as well as for industrial purposes are crucial issues that the educational system of every civilized country has the duty to develop. The developement of HPDT-18 series transparent hydraulic pressure demonstration system in order to help teachers improve training efficiency of hydraulics. Mechatronical flexible combination, Limited production & free training  Transparent & direct viewing simulational experiments, Regular supply & all-life guarantee         All technical indexes of the hydraulic pressure parts, demonstration table and accessories on this equipment are designed, produced, inspected according to "Transparent hydraulic pressure transmission demonstration system enterprise standard" The standard is accomplished on the basis of International standard after amendment & improvement. Its publication, record, and implementation mean that our products have been enhanced to a new level both in performance and quality. 1. Hydraulic pressure transmission has the advantages such as: little weight, high power, simple structure, flexible layout, easy control, stepless control of velocity, quick switching & gear shifting, wide speed control range, good celerity, stable working, little noise, and serialization, standardization, universalization of parts etc. 2. Adopts high-precision technology, overcomes the difficulties such as: thermoplastics, distortion, inferior mechanical strength of organic plastic, high surface fineness & structure precision of hydraulic pressure parts to develop the HPDT-1860 transparent hydraulic pressure transmission demonstration system successfully. 3. Generally, hydraulic pressure is composed of basic circuits such as: direction control circuits, pressure control circuits, speed control circuits, sequential control circuits and so on. The experimental demonstration of 18 basic control circuits (over 60 extended experiments) can make students familiar with structure, capability, and purposes of over 20 kinds of common hydraulic pressure equipments, master the working principles of over 10 kinds of basic circuits can enlighten students in demonstration, inspire their learning interest and improve ability of faults eliminating & problems solving. 4. Adopts transparent hydraulic pressure parts, combination & insertion structure, flexible oil path connection, and universal electric circuits   18 Types of Basic Hydraulic Transmission Control Circuits NO. Name NO. Name 1 Switch circuit with switch valve 10 Oil return throttle speed regulation circuit 2 “O” Mechanism switch valve shut-lock circuit 11 Variable pump speed regulation circuit 3 Shut-lock circuit with single-way valve 12 Combined speed regulation circuit with pressure limit variable pump and speed regulation valve 4 Pressure regulation circuit 13 Speed exchange circuit with flow valve 5 2-stage pressure circuit 14 2-time feed circuit 6 Pressure reducing circuit with pressure reducing valve 15 Sequential action circuit with sequential valve 7 Pressure increasing circuit with pressure increasing cylinder 16 Sequential action circuit with pressure relay 8 Uninstall circuit with switch valve 17 Sequential action circuit with electric appliance travel switch 9 Oil enter throttle speed regulation circuit   18 Sequential action circuit with travel valve