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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.
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
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"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
The vector stencils library "Valves and fittings" contains 104 symbols of valve components.
Use these icons for drawing industrial piping systems; process, vacuum, and fluids piping; hydraulics piping; air and gas piping; materials distribution; and liquid transfer systems.
"A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically valves fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure.
The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction. ...
Valves are found in virtually every industrial process, including water & sewage processing, mining, power generation, processing of oil, gas & petroleum, food manufacturing, chemical & plastic manufacturing and many other fields. ...
Valves may be operated manually, either by a handle, lever, pedal or wheel. Valves may also be automatic, driven by changes in pressure, temperature, or flow. These changes may act upon a diaphragm or a piston which in turn activates the valve, examples of this type of valve found commonly are safety valves fitted to hot water systems or boilers.
More complex control systems using valves requiring automatic control based on an external input (i.e., regulating flow through a pipe to a changing set point) require an actuator. An actuator will stroke the valve depending on its input and set-up, allowing the valve to be positioned accurately, and allowing control over a variety of requirements." [Valve. Wikipedia]
The example "Design elements - Valves and fittings" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Chemical and Process Engineering solution from the Engineering area of ConceptDraw Solution Park.
Valves and fittings symbols
Valves and fittings symbols, wedge gate valve, valve manifold, tundish, swivel joint, strainer, stop check valve, soldered, solvent, socket, spigot, socket, spigot, socket weld, sleeve joint, separator, screwed sleeve, screwed joint, screw-down valve, screw-down check valve, relief valve, relief angle valve vacuum, relief angle valve pressure, reel valve, reducing valve, reducer, powered valve, plug valve straight through, plug valve T point, plug valve L point, plug valve 3 way, plug valve, parallel slide valve, open vent, needle valve, lock-shield valve, liquid seal, joint, hydrant, globe valve, gate valve, float operated valve, flanged valve, flanged joint, bolted joint, flame arrester, exhaust silencer, exhaust head, end cap socket and spigot, end cap screwed, end cap quick release, end cap flanged and bolted, end cap fillet welded, end cap butt welded, end cap screwed and plugged, end cap, electrically insulated, electrically bonded, drain silencer, diaphragm valve, check valve, characterized port valve, butterfly valve, butt weld, bursting disc, bell mouth, ball valve, angle valve, Y strainer, 3-way plug valve,
Used Solutions
The vector stencils library "Valves and fittings" contains 104 symbols of valve components.
Use these icons for drawing industrial piping systems; process, vacuum, and fluids piping; hydraulics piping; air and gas piping; materials distribution; and liquid transfer systems in the ConceptDraw PRO software extended with the Chemical and Process Engineering solution from the Chemical and Process Engineering area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ engineering-chemical-process
Electrically bonded
Electrically bonded, electrically bonded,
Bursting disc
Bursting disc, bursting disc,
Flame arrester
Flame arrester, flame arrester,
Strainer
Strainer, strainer,
Separator
Separator, separator,
Exhaust silencer
Exhaust silencer, exhaust silencer,
Bell mouth
Bell mouth, bell mouth,
Exhaust head
Exhaust head, exhaust head,
Hydrant
Hydrant, hydrant,
Drain silencer
Drain silencer, drain silencer,
Liquid seal open/closed
Liquid seal open/closed, liquid seal,
Y strainer
Y strainer, Y strainer,
Gate valve
Gate valve, gate valve,
Globe valve
Globe valve, globe valve,
Globe valve 2
Globe valve 2, gate valve,
Globe valve 3
Globe valve 3, gate valve,
Screw-down valve
Screw-down valve, screw-down valve,
Lock-shield valve
Lock-shield valve, lock-shield valve,
Reel valve
Reel valve, reel valve,
Check valve
Check valve, check valve,
Check valve 2
Check valve 2, check valve,
Check valve 3
Check valve 3, check valve,
Screw-down check valve
Screw-down check valve, screw-down check valve,
Stop check valve
Stop check valve, stop check valve,
Diaphragm valve
Diaphragm valve, diaphragm valve,
Diaphragm valve 2
Diaphragm valve 2, diaphragm valve,
Diaphragm valve 3
Diaphragm valve 3, diaphragm valve,
Powered valve
Powered valve, powered valve,
Powered valve 2
Powered valve 2, powered valve,
Powered valve 3
Powered valve 3, powered valve,
Needle valve
Needle valve, needle valve,
Needle valve 2
Needle valve 2, needle valve,
Needle valve 3
Needle valve 3, needle valve,
Relief valve
Relief valve, relief valve,
Relief valve 2
Relief valve 2, relief valve,
Relief valve 3
Relief valve 3, relief valve,
Angle valve
Angle valve, angle valve,
Angle valve 2
Angle valve 2, angle valve,
Angle valve 3
Angle valve 3, angle valve,
Angle valve 4
Angle valve 4, angle valve,
Float operated valve
Float operated valve, float operated valve,
Float operated valve 2
Float operated valve 2, float operated valve,
Flanged valve
Flanged valve, flanged valve,
Butterfly valve
Butterfly valve, butterfly valve,
Butterfly valve 2
Butterfly valve 2, butterfly valve,
Wedge gate valve
Wedge gate valve, wedge gate valve,
Parallel slide valve
Parallel slide valve, parallel slide valve,
Ball valve
Ball valve,
Ball valve 2
Ball valve 2, ball valve,
Ball valve 3
Ball valve 3, ball valve,
Relief angle valve vacuum
Relief angle valve vacuum, relief angle valve vacuum,
Relief angle valve pressure
Relief angle valve pressure, relief angle valve pressure,
Reducing valve
Reducing valve, reducing valve,
Reducing valve 2
Reducing valve 2, reducing valve,
Plug valve 3 way
Plug valve 3 way, plug valve 3 way,
Plug valve L point
Plug valve L point, plug valve L point,
Plug valve 2
Plug valve 2, plug valve,
Plug valve
Plug valve, plug valve,
Plug valve straight through
Plug valve straight through, plug valve straight through,
Plug valve T point
Plug valve T point, plug valve T point,
3-way plug valve
3-way plug valve, 3-way plug valve,
3-way plug valve 2
3-way plug valve 2, 3-way plug valve,
3-way plug valve 3
3-way plug valve 3, 3-way plug valve,
Mixing valve
Mixing valve,
Valve Manifold
Valve Manifold, valve manifold,
Characterized port valve
Characterized port valve, characterized port valve,
Reducer
Reducer, reducer,
Reducer 2
Reducer 2, reducer,
General joint
General joint, joint,
Butt weld
Butt weld, butt weld,
Butt weld 2
Butt weld 2, butt weld,
Butt weld 3
Butt weld 3,
Butt weld 4
Butt weld 4, butt weld,
Flanged/ bolted
Flanged/ bolted, flanged joint, bolted joint,
Soldered / solvent
Soldered / solvent,
Soldered / solvent 2
Soldered / solvent 2, soldered, solvent,
Screwed joint
Screwed joint, screwed joint,
Screwed joint 2
Screwed joint 2, screwed joint,
Screwed joint 3
Screwed joint 3, screwed joint,
Socket and spigot
Socket and spigot, socket, spigot,
Socket and spigot 2
Socket and spigot 2, socket, spigot,
Socket and spigot 3
Socket and spigot 3, socket, spigot,
Sleeve
Sleeve, sleeve joint,
Sleeve 2
Sleeve 2,
Screwed sleeve
Screwed sleeve, screwed sleeve,
Screwed sleeve 2
Screwed sleeve 2,
Socket weld
Socket weld,
Socket weld 2
Socket weld 2, socket weld,
Swivel joint
Swivel joint, swivel joint,
Swivel joint 2
Swivel joint 2, swivel joint,
Swivel joint 3
Swivel joint 3, swivel joint,
End cap
End cap, end cap,
End cap butt welded
End cap butt welded, end cap butt welded,
End cap screwed
End cap screwed, end cap screwed,
End cap socket and spigot
End cap socket and spigot, end cap socket and spigot,
End cap fillet welded
End cap fillet welded, end cap fillet welded,
End cap screwed and plugged
End cap screwed and plugged, end cap screwed and plugged,
End cap quick release
End cap quick release, end cap quick release,
End cap flanged and bolted
End cap flanged and bolted, end cap flanged and bolted,
End cap flanged and bolted 2
End cap flanged and bolted 2, end cap flanged and bolted,
Electrically insulated
Electrically insulated, electrically insulated,
Tundish
Tundish, tundish,
Syphon drain
Syphon drain,
Open vent
Open vent, open vent,
Used Solutions