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"Directional control valves route the fluid to the desired actuator. They usually consist of a spool inside a cast iron or steel housing. The spool slides to different positions in the housing, and intersecting grooves and channels route the fluid based on the spool's position. The spool has a central (neutral) position maintained with springs; in this position the supply fluid is blocked, or returned to tank. Sliding the spool to one side routes the hydraulic fluid to an actuator and provides a return path from the actuator to tank. When the spool is moved to the opposite direction the supply and return paths are switched. When the spool is allowed to return to neutral (center) position the actuator fluid paths are blocked, locking it in position. Directional control valves are usually designed to be stackable, with one valve for each hydraulic cylinder, and one fluid input supplying all the valves in the stack. Tolerances are very tight in order to handle the high pressure and avoid leaking, spools typically have a clearance with the housing of less than a thousandth of an inch (25 µm). The valve block will be mounted to the machine's frame with a three point pattern to avoid distorting the valve block and jamming the valve's sensitive components. The spool position may be actuated by mechanical levers, hydraulic pilot pressure, or solenoids which push the spool left or right. A seal allows part of the spool to protrude outside the housing, where it is accessible to the actuator. The main valve block is usually a stack of off the shelf directional control valves chosen by flow capacity and performance. Some valves are designed to be proportional (flow rate proportional to valve position), while others may be simply on-off. The control valve is one of the most expensive and sensitive parts of a hydraulic circuit." [Hydraulic machinery. Wikipedia]
The Windows template "Hydraulic 4-ported 3-position valve" for the ConceptDraw PRO diagramming and vector drawing software is included in the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ engineering-mechanical
Hydraulic directional control valve
Hydraulic directional control valve, four-port, three-position, valve,
Used Solutions
The vector stencils library "Electrical circuits" contains 49 element symbols of electrical and electronic devices, including ignitors, starters, transmitters, circuit protectors, transducers, radio and audio equipment.
Use it for drawing electronic circuit diagrams and electrical schematics in the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ engineering-electrical
Ground
Ground, ground connection, ground,
Equipotentiality
Equipotentiality, equipotentiality,
Igniter plug
Igniter plug, igniter plug,
Junction
Junction, junction,
Chassis
Chassis, chassis, frame ground connection,
Chassis 2
Chassis 2, chassis, frame ground connection,
Capacitor
Capacitor, fixed capacitor, capacitor,
Variable capacitor
Variable capacitor, variable capacitor, capacitor,
Capacitor 2
Capacitor 2, fixed capacitor, capacitor,
Variable capacitor 2
Variable capacitor 2, variable capacitor, capacitor,
Antenna
Antenna, antenna,
Antenna 2
Antenna 2, loop antenna, antenna,
Circuit breaker
Circuit breaker,
Fuse
Fuse, fuse,
Fuse 2
Fuse 2, fuse,
Alarm fuse
Alarm fuse, alarm fuse, fuse,
Alarm fuse 2
Alarm fuse 2, alarm fuse, fuse,
Circular generic component
Circular generic component, component,
Rectangular generic component
Rectangular generic component, component,
Transducer
Transducer, transducer,
Capacitive transducer
Capacitive transducer, capacitive transducer, transducer,
Non-capacitive transducer
Non-capacitive transducer, non-capacitive transducer, transducer,
Recording pickup head
Recording pickup head, pickup head, recording pickup head,
Reproducing pickup head
Reproducing pickup head, pickup head, reproducing pickup head,
Positive pulse
Positive pulse, pulse,
Negative pulse
Negative pulse,
Alternating pulse
Alternating pulse, pulse,
Saw tooth
Saw tooth, saw tooth, signal,
Positive step function
Positive step function, step function,
Negative step function
Negative step function,
Explosive squib
Explosive squib, explosive squib, electric explosive squib,
Sensing link squib
Sensing link squib, sensing link squib, electric sensing link squib,
Squib ignitor
Squib ignitor, squib ignitor, electric squib ignitor,
Unspecified material
Unspecified material, material,
Solid material
Solid material, solid material, material,
Semiconducting material
Semiconducting material, semiconducting material, material,
Liquid
Liquid, liquid, liquid material,
Insulating material
Insulating material, material, insulating material,
Gas
Gas, gas, gas material,
Electret
Electret, electret, electret material, material,
Surge protector
Surge protector, surge protector,
Multigap surge protector
Multigap surge protector, multigap surge protector, surge protector,
Valve surge protector
Valve surge protector, valve surge protector, surge protector,
Electrolytic surge protector
Electrolytic surge protector, electrolytic surge protector, surge protector,
Carbon block surge protector
Carbon block surge protector, carbon block surge protector, surge protector,
Protective gap surge protector
Protective gap surge protector, protective gap surge protector, protective gap, surge protector,
Sphere gap surge protector
Sphere gap surge protector, sphere gap surge protector, sphere gap, surge protector,
Horn gap surge protector
Horn gap surge protector, horn gap surge protector, horn gap, surge protector,
Circuit breaker
Circuit breaker, circuit breaker,
Used Solutions

pvc pipe furniture plans, pvc pipe plans, plumbing plans examples, How to read plumbing plans? plumbing floor plan, plumbing layout plan, half pipe plans, pipe bender plans, plumbing plan symbols Plumbing and Piping Plans

pvc pipe furniture plans, pvc pipe plans, plumbing plans examples, How to read plumbing plans? plumbing floor plan, plumbing layout plan, half pipe plans, pipe bender plans, plumbing plan symbols
Plumbing and Piping Plans solution extends ConceptDraw PRO v10.2.2 software with samples, templates and libraries of pipes, plumbing, and valves design elements for developing of water and plumbing systems, and for drawing Plumbing plan, Piping plan, PVC Pipe plan, PVC Pipe furniture plan, Plumbing layout plan, Plumbing floor plan, Half pipe plans, Pipe bender plans.

mechanical engineering, mechanical design software, mechanical drawing symbols, mechanical drawing software Mechanical Engineering

mechanical engineering, mechanical design software, mechanical drawing symbols, mechanical drawing software
This solution extends ConceptDraw PRO v.9 mechanical drawing software (or later) with samples of mechanical drawing symbols, templates and libraries of design elements, for help when drafting mechanical engineering drawings, or parts, assembly, pneumatic,
This example engineering drawing showing the hydraulic directional control valve usage with floating motor and pressure compensated pump is redesigned using the ConceptDraw PRO diagramming and vector drawing software from the Wikimedia Commons file: DCV 17.jpg.
[commons.wikimedia.org/ wiki/ File:DCV_ 17.jpg]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
[creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"Directional control valves are one of the most fundamental parts in hydraulic machinery as well and pneumatic machinery. They allow fluid flow into different paths from one or more sources. They usually consist of a spool inside a cylinder which is mechanically or electrically controlled. The movement of the spool restricts or permits the flow, thus it controls the fluid flow. ...
The spool (sliding type) consists of lands and grooves.The lands block oil flow through the valve body. The grooves allow oil or gas to flow around the spool and through the valve body. There are two fundamental positions of directional control valve namely normal position where valve returns on removal of actuating force and other is working position which is position of a valve when actuating force is applied. There is another class of valves with 3 or more position that can be spring centered with 2 working position and a normal position. ...
Directional control valves can be classified according to:
(1) number of ports;
(2) number of positions;
(3) actuating methods;
(4) type of spool." [Directional control valve. Wikipedia]
The fluid power equipment drawing example "Directional control valve" is included in the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Hydraulic equipment schematic
Hydraulic equipment schematic, spring, variable spring, non-variable spring, reservoir, pressure compensator, hydraulic pump, four-port, flow path, four-port, crossed, flow path, flow path, floating motor, filter, electric linear, solenoid, dot, line, junction, closed path, closed port, callout, box, flow path,
Used Solutions

chemical engineering, process engineering, process flow diagram symbols, process and instrumentation diagram, process diagrams Chemical and Process Engineering

chemical engineering, process engineering, process flow diagram symbols, process and instrumentation diagram, process diagrams
This chemical engineering solution extends ConceptDraw PRO v.9.5 (or later) with process flow diagram symbols, samples, process diagrams templates and libraries of design elements for creating process and instrumentation diagrams, block flow diagrams (BFD