{"id":13701,"date":"2024-07-17T09:21:12","date_gmt":"2024-07-17T09:21:12","guid":{"rendered":"https:\/\/hydraflu.com\/?p=13701"},"modified":"2025-12-25T04:48:50","modified_gmt":"2025-12-25T04:48:50","slug":"hydraulic-schematic-symbols","status":"publish","type":"post","link":"https:\/\/hydraflu.com\/fr\/hydraulic-schematic-symbols\/","title":{"rendered":"EASY Guide to Read Hydraulic Schematic Symbols"},"content":{"rendered":"

What Is Hydraulic <\/span>Schematic<\/span> Symbol? From What Standard?<\/span><\/h2>\n

Hydraulic schematic symbols, many people engaged in hydraulics will certainly be familiar with hydraulic symbols, which have a very important role in the hydraulic system. It can help engineers and technicians to quickly understand the working principle and each component of the hydraulic system.<\/span><\/p>\n

In the process of my contact with customers, I found that the use of hydraulics is becoming more and more widespread, but also more and more people come to deal with hydraulics. For those who have not engaged in hydraulics,\u00a0 do not know where to start in the design of hydraulic systems, repair, and maintenance of hydraulic systems. To help to understand the hydraulic system, I have selected some commonly used hydraulic symbols, including a variety of hydraulic components, such as hydraulic pumps<\/a>, hydraulic valves<\/a>, hydraulic cylinders, and so on. Each symbol has its own unique shape and identification, through which the components in a hydraulic system can be accurately described and represented.\u00a0<\/span><\/p>\n

Hydraulic symbols are not drawn arbitrarily, there are certain rules, this provision is the national standard ISO 14617-1:2002, for the hydraulic technicians of various countries to provide convenient technical communication. SEE ISO standards of Hydraulic symbols.<\/span><\/p>\n

Explain Some Of the Symbols One By One According Function<\/span><\/h2>\n

Basic Symbol<\/span><\/h3>\n

\"line1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Continuous line symbol-a flow line such as a Hydraulic Pipe<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/p>\n

\"line2\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0Dashed line symbol-Pilot (control) line, drain line, flushing line<\/span><\/p>\n

\"line4\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0Frame for two and more components<\/span><\/p>\n

\"line3\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0Electrical control line<\/span><\/p>\n

\"line5\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Hose assembly<\/span><\/p>\n

\"line7\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Two fluid lines crossing (no connection)<\/span><\/p>\n

\"line8\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Connection of two fluid lines<\/span><\/p>\n

Reservoir Symbol<\/span><\/h3>\n

\"r1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Drain to tank<\/span><\/p>\n

\"r2\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Return to tank<\/span><\/p>\n

Electric Motor Symbol<\/span><\/h3>\n

\"Electric_Motor\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Electric motor<\/a>–the power source of the system<\/p>\n

Hand Pump<\/a> Symbol<\/h3>\n

\"Hand_Pump\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Hand pump<\/p>\n

Hydraflu offers a complete range of manual hydraulic hand pumps and matched reservoirs\/tanks.<\/p>\n

\"manual<\/a><\/p>\n

 <\/p>\n

Hydraulic Motor Symbol<\/span><\/h3>\n

\"Fixed_Displacement_Motor_One-Rotation-Direction\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Fixed displacement, one direction of rotation, internal case drain<\/span><\/p>\n

\"motor\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Fixed displacement, bi-directional rotation<\/p>\n

Hydraulic Pump<\/a> Symbol<\/span><\/h3>\n

\"Fixed_Displacement_One-Flow-Direction\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Fixed displacement, one direction of rotation, one direction of flow, internal case drain<\/span><\/p>\n

\"pump\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Fixed displacement, bi-directional rotation<\/a><\/p>\n

Hydraulic Cylinder<\/a> Symbol<\/span><\/h3>\n

\"Single_Acting_Cylinder_Return-Stroke-by-External-Force\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Single-acting cylinder<\/p>\n

\"c1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Double-acting cylinder<\/a> (single rod)<\/span><\/p>\n

\"Double-Acting-Cylinder_Double-Rod\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Double-acting cylinder(double rods)<\/p>\n

\"ingle_Acting_Cylinder_Return-Stroke-through-a-Spring\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Single-acting cylinder with return Stroke through a spring<\/p>\n

\"c3\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Single-acting (\u201cplunger\u201d) cylinder<\/span><\/p>\n

\"c2\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Cylinder with adjustable cushions<\/span><\/p>\n

\"c4\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Cylinder with non-adjustable cushioning<\/span><\/p>\n

Directional Control Valve Symbol<\/span><\/a><\/h3>\n

\"2\/2\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02\/2 Valve (2 ports, 2 positions)<\/span><\/p>\n

\"2\/3\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a03\/2 Valve (3 ports, 2 positions)<\/span><\/p>\n

\"2\/4\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a04\/2 Valve (4 ports, 2 positions)<\/span><\/p>\n

\"4\/3\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a04\/3 Valve (4 ports, 2 positions)<\/span><\/p>\n

Slip-in Valve Symbol<\/span><\/h3>\n

\"s1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Pressure control normally closed, area ratio: 1<\/span><\/p>\n

\"s2\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Directional control, area ratio: >0.5<\/span><\/p>\n

\"s3\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Directional control, area ratio: <0.5<\/span><\/p>\n

Accumulator Symbol<\/span><\/h3>\n

\"a1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Diaphragm accumulator<\/span><\/p>\n

\"Bladder_accumulator\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Bladder accumulator\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0<\/span><\/p>\n

\"Piston_Accumulator\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Piston accumulator<\/span><\/p>\n

Valve Control Method<\/span><\/h3>\n

\"Solenoid\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Solenoid Control<\/span><\/p>\n

\"Proportional\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Proportional solenoid control<\/span><\/p>\n

\"Lever\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Lever control<\/span><\/p>\n

\"Electro-Hydraulic\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Electro-hydraulic (pilot operated)<\/span><\/p>\n

\"Hydraulic\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Hydraulic (Pilot operated)<\/p>\n

\"Spring\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/span>Spring<\/span><\/p>\n

\"Pushbutton\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Push button<\/span><\/p>\n

\"Detent\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Detent<\/p>\n

Relief Valve<\/span><\/a><\/h3>\n

\"re1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <\/span>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/span>\u00a0 \u00a0 \u00a0<\/span>Direct operation<\/span><\/p>\n

\u00a0 \u00a0<\/span>\"re2\"\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <\/span>Pilot operation<\/span><\/p>\n

Pressure Reducing Valve<\/a> Symbol<\/span><\/h3>\n

\"re3\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Direction operation<\/span><\/p>\n

\"re4\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Pilot operation<\/span><\/p>\n

\"re5\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Direct operated 3-way reducing valve\u00a0<\/span><\/p>\n

Check Valve<\/a> Symbol<\/span><\/h3>\n

\"C1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Check valve without spring<\/p>\n

\"c2\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Check valve with spring<\/p>\n

\"C3\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Check Valve (Pilot operated)<\/a><\/p>\n

\"c4\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Check valve with drain (Pilot operated)<\/p>\n

Throttle Valve Symbol<\/span><\/h3>\n

\"t1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Throttle valve with adjustable opening<\/p>\n

\"t2\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Throttle valve with adjustable opening, reverse flow check valve<\/p>\n

\"t3\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Pressure compensated, throttle valve with adjustable opening<\/p>\n

\"t4\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Pressure compensated, three ways of throttle valve<\/p>\n

Filter Symbol<\/span><\/h3>\n

\"filter\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Filter<\/p>\n

Heat Exchanger Symbol<\/span><\/h3>\n

\"h\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Heat exchange<\/p>\n

Flow Meter Symbol<\/span><\/h3>\n

\"f1\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Flow Meter<\/p>\n

Conclusion<\/span><\/h2>\n

These are some commonly used hydraulic symbols, if there is any place is inaccurate or incomplete, please call and write to contact us, we humbly accept.<\/p>\n

\"products\"<\/a><\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

What Is Hydraulic Schematic Symbol? From What Standard? Hydraulic schematic symbols, many people engaged in hydraulics will certainly be familiar with hydraulic symbols, which have […]<\/p>\n","protected":false},"author":1,"featured_media":13764,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13701","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"\nHydraulic Schematic Symbols<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hydraflu.com\/fr\/hydraulic-schematic-symbols\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hydraulic Schematic Symbols\" \/>\n<meta property=\"og:description\" content=\"What Is Hydraulic Schematic Symbol? 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