Zsfw hydraulics bosch rexroth ag 314 function, section. Figures 146 and 147 show symbols for infinitely variable pressurerelief and reducing valves. The symbols do not identify component size or their actual position on the machine, however the symbols do provide vital information relating. Hydraulic motor with limited angle of rotation hydraulic symbols.
Composite symbols can be devised for any fluid power component by combining basic symbols. Use as general symbol without indication of specific type. Enter the library name bosch rexroth pumps and click add new. Iso symbol information as it applies to hydraulic and pneumatic schematics. An optional manual override 9 allows for moving of the. Pressure valves type dz are pilot operated pressure sequence valves. A basic valve is repre sented by a single square as shown in figure 4. A family of graphic symbols has been developed to represent fluid power components and systems on schematic drawings. Our knowledge and expertise is invaluable in assisting your company with old and new series bosch rexroth servo and proportional valve repairs, as well as any of the standard directional, flow and pressure control valve repair and replacement needs. At bosch rexroth, online classes are an integral part of learning.
Electrohydraulic type weh hydraulic type wh for subplate mounting porting pattern to iso 4401 and nfpa t3. Directional valves controlling the flow direction and thus the direction of movement or rotation of hydraulic actuators directional seat valves or spool valves, direct operated or pilot operated. Learn all about hydraulic symbols hydraulics online. The pressure sequence valves basically consist of main valve 1 with main spool insert 7 and pilot valve 2 with pressure adjustment element and optional check valve 3. General design spool valve, direct operated, with steel sleeve actuation proportional solenoid with position control, obe type of connection subplate mounting, porting pattern according to. The method of valve actuation is indicated by symbols added to the squares. Directional control valve 4wrle 536 re 29123, edition. Bosch rexroth is now offering a comprehensive family of software engineering tools or etools, that covers. In this topic we are talking about how the hydraulic schematic symbol for control valve is derived. The pilot control is shown on the lefthand sideand the return on the righthand side.
Iso symbols a family of graphic symbols has been developed to represent fluid power components and systems on schematic drawings. Import bosch rexroth pump symbols library hlm 20 page 2 the manage symbol library dialog appears. Important characteristic values of hydraulic fluids. Directional control valve 22way valve, closed normal position directional control valve 22way valve, open normal position directional control valve 32way valve. Hydraulic symbols are largely derived from the symbols of the switching valves. The valve type h4weh is a directional spool valve with electrohydraulic actuation. Control spool return in the pilot control valve with 2 spool positions and 2 solenoids. Recognizing and understanding schematic symbols will enable you to comprehend a circuits function. Simplified symbols are shown for commonly used components. The directional valve basically consists of the main valve with housing 1, the main control spool 2, one or two return springs 3. Model 4 ws, requires separate electronic amplifier to control this valve an external electronic control servo. Valve housing with control spool and sleeve in servo.
Compact hydraulics product selection guide bosch rexroth. Ets has over 25 years of sales and service experience with the bosch rexroth group in the u. Directional control valve 4wrpeh 522 re 29121, edition. Directional, manual operated poppet type compact hydraulics product. Directional spool valve wmr, wmrz, wmu, wmm, wmda 514 re 22280, edition. Electrohydraulic 4way directional servo valve model 4 ws.
Directional spool valves, pilotoperated, with hydraulic or electro. Without port relief valve with port relief valve symbols. A4vg series 40 bosch rexroth ag 2140 valves procedure to replace the valve seal and the valve insert. They only perform their function in an active, closed control loop, even if the pilot valve. The spool valve has the capability to direct fluid flow to either end of the actuator. The bosch rexroth pumps library added to the libraries listing.
Animation how schematic symbols for control valves is. A family of graphic symbols has been developed to represent fluid power. Valve actuators symbol descrlptlon filterseparator manual drain filter,separator oil removal filter automatic drain lubricator jogs drain lubricator with mmun lubricator air line pressure regulator air line pressure regulator pilot controlled, relieving filterregulator manual raln rolleveng gauge auto aln symbol description aposition 2wav. The following is a list of the latest product catalogs from mobile hydraulics. Rexroth hydraulic symbols pdf directional control valve. Wrh hydraulics bosch rexroth ag 524 function, section throttle insert see page 24 pilot valve type 3drep 6 the pilot valve is a proportional solenoid operated 3way pressure reducing valve. It controls the start, stop and direction of a flow. It is used for the leakagefree isolation of pressurized working circuits e. It is used to convert an electrical input signal into a. Symbols 3 function, section 4, 5 technical data 6, 7 electrical connection, mating connectors 8, 9 block diagram of the integrated electronics obe for type 4wree 10 characteristic curves 11 to 17 unit dimensions 18 to 22 features direct operated proportional directional valve with electri. Schematic drawings document the machine logic only and are never to be used as a piping diagram. Construction spool type valve, pilot operated actuation servo solenoid directional control valve ng6 obe, with position controller for pilot valve and main stage type of mounting subplate, mounting hole configuration ng10. In the united states, the american national standards institute ansi is responsible for symbol information.
This keeps air bubbles from being trapped in the solenoid tube causing spool oscillation. Use a pc or plc to produce the variable signal to change pressure any time the machine sequence requires it. Schematic symbols are used to identify and graphically depict the function of fluid power components. They control the start, stop and direction of a flow. View and download rexroth a4vg repair manual online. Setup the 4wrpeh highresponse valve mainly consists of. They only perform their function in an active, closed control loop, even if the pilot valve features a failsafe 4th position. Yuken hydraulic directional control valve spool symbols drawingmodel number ala industries limitedyuken 1150 southpoint circle, ste d, valparaiso, in 46385 tel. Berry all the symbols you need to design your pneumatic circuit in. Type zsf the valve type zsf is a pilot operated check valve in sandwich plate design. Our basic hydraulic online training ehtg courses cover. Hydraulic symbols are issued and controlled by the international standards organization iso, standard iso12191 2006. Directional spool valve ftwe 2 k 38 re 58007, edition. The valve can be ordered in conjunction with a separate electronic amplifier card model 4 ws, or it can also be ordered with the electronics integrated into the valve model 4 wse depending on what is best for the application.
Sales industry sector metallurgy formulary hydraulics. Infiniteposition valve symbols are shown in figure 4. This is a very simple animated illustration on the basics of hydraulic schematic symbols. The valve type 4wrle is a pilotoperated directional control valve with electrical position feedback and. Motion industries to open pacific northwest distribution. Hydraulic schematic symbols airline hydraulics main page basic symbols linescontinuous line flow line dashed line pilot, drain envelope long and short dashes around two or more component symbols. They are used for pressure dependent sequence switching of a second circuit. Valve mounting — whenever possible, mount proportional valves so that the spools are in a horizontal plane, not vertical. Yuken hydraulic directional control valve spool symbols. Valvecontrolled, selfpriming pumps with a fixed displacement. They control the start, stop and direction of a flow and basically comprise a housing 1, the control spool 2 and a return spring 4. Numerous spool symbols and types of actuation performance profile ng6 to 32 and valves for inline.
Pneumatic symbols pneumatic components examples of symbols in this catalogue are as follows portspositions function. Rexroth model sl to prevent cross flow between the cylinders during load holding, and one checkqmeter as illustrated. Due to its favorable flow characteristics and the low cracking pres. Circularlarge circle pump, motor small circle measuring devices semicircle rotary actuator squareone square pressure control. The valve shown in the illustration is a open center valve, meaning that the oil flow is returned to the reservoir when the valve is in the neutral position.
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