[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-669056-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-669056-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","parker-pneumatic-fluid-power-graphic-symbols-technical-data","Parker Pneumatic - Fluid Power Graphic Symbols - Technical Data","","Parker Pneumatic technical content describing pneumatic products and fluid power graphic symbols, including symbol descriptions for air preparation units, pneumatic valves, valve actuators, and cylinders. The document provides guidance on line conventions for hydraulic, gaseous flow direction, and energy-source representations, plus connector and quick-disconnect symbol usage. It also includes actuator technical information such as design torque, with definitions for demand torque, cushion torque, and key torque components (load, friction, and acceleration) using stated equations.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/parker-pneumatic-fluid-power-graphic-symbols-technical-data/669056/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/parker-pneumatic-fluid-power-graphic-symbols-technical-data/669056.png","ImageObject",300,407,{"name":42,"@type":43},"Mafia Boss","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-04","2026-11-01",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",5,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What does design torque represent for a pneumatic actuator?","Question",{"text":63,"@type":64},"Design torque represents the maximum torque an actuator must supply in an application. It is the greater of the demand torque or the cushion torque, and inadequate torque can cause slow movement or stalling.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How are demand torque and cushion torque defined?",{"text":68,"@type":64},"Demand torque is the torque required from the actuator to do the job, combining load, friction, and acceleration torques with an appropriate design factor. Cushion torque is the torque needed to provide required deceleration by restricting flow to create back pressure.",{"name":70,"@type":61,"acceptedAnswer":71},"What is the meaning of the line types in fluid power graphic symbols?",{"text":72,"@type":64},"Solid line indicates the main line, dashed line indicates the pilot line, and dotted line indicates exhaust or drain line. The conventions also include center line and enclosure outline usage.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},669056,1793524713,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,100,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & 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Symbols  \nAir Preparation Units Pneumatic Valves  \nSymbol Description Symbol Description  \nFilter / Separator with manual drain  \nFilter / Separator with automatic drain  \nOil Removal Filter  \nAutomatic Drain  \nLubricator less drain  \nLubricator  \nwith manual drain  \nLubricator  \nwith automatic filling  \nAir Line Pressure Regulator adjustable, relieving  \nAir Line Pressure Regulator  \npilot controlled, relieving  \nFilter / Regulator (piggyback) manual drain relieving (with gauge)  \nFilter / Regulator (piggyback) auto drain relieving  \nAir Line Combo F-R-L  \nsimplified  \n3-Position, 4-Way, APB  \nports closed, center pos.  \n3-Position, 4-Way, CE 5-Ported  \ncylinder ports open to exhaust in center position  \n3-Position, 4-Way, PC 5-Ported  \npressure ports open to exhaust in center position  \nQuick Exhaust  \nShuttle  \nValve Actuators Symbol Description  \nManual  \ngeneral symbol  \nPush Button  \nLever  \nPedal or Treadle  \nMechanical  \ncam, toggle, etc.  \nPneumatic Valves  \nSymbol Description  \nCheck  \nFlow Control  \nRelief Valve  \n2-Position, 4-Way 5-Ported  \nSpring  \nDetent  \nline indicates which detent is in use  \nPiezo  \nAnd / Or Composite solenoid and pilot or manual override and pilot  \n|  | |\n| --- | --- |\n\n2-Position, 2-Way  \n2-Position, 3-Way  \n2-Position, 4-Way  \nSolenoid  \nInternal  \nPilot Supply  \nRemote  \nPilot Supply  \nAnd / Or Composite solenoid and pilot or manual override  \n| | |\n| --- | --- |\n\ncomplete simplified  \nCylinders  \nSymbol Description  \nStandard double acting  \nSingle Acting  \nDouble Rod  \nSpring Return  \nRam Type  \nTelescope  \nTandum  \nDuplex  \nLines and Functions  \nSymbol Description  \n~~ ~~ Solid Line – Main Line  \n~~ ~~ Dashed Line – Pilot Line  \n Dotted Line – Exhaust  \nor Drain Line   Center Line –  \nEnclosure Outline  \nLines Crossing  \n(90° intersection not necessary)  \nLines Joining  \n(90° intersection not necessary)  \nLines Joining  \nFlow Direction hydraulic medium  \nFlow Direction gaseous medium  \nEnergy Source  \nLine with Fixed Restriction  \nLine with Adjustable Restriction  \nFlexible Line  \nPlugged Port, Test Station, Power Take-off  \nconnected disconnected  \nconnected disconnected  \nconnected  \ndisconnected  \nQuick Disconnect Without Checks  \nQuick Disconnect With Checks  \nQuick Disconnect With One Check  \nH1  \nParker Hannifin Corporation  \nPneumatic Division Richland, Michigan [www.parker.com/pneumatics](www.parker.com/pneumatics)  \n\n| Valve Technival\u003Cbr>Information |\n| --- |\n| Vacuum Technical\u003Cbr>Information |\n| Actuator Technical\u003Cbr>Information |\n| Fluid Power Graphic Symbols |\n| H |\n| Technical Data |\n\n\n| Valve Technival Information |\n| --- |\n| Vacuum Technical\u003Cbr>Information |\n| Actuator Technical\u003Cbr>Information |\n| Fluid Power\u003Cbr>Graphic Symbols |\n| H |\n| Technical Data |\n\nCatalog PDN1000-2US  \nParker Pneumatic  \nPneumatic Products  \nActuator Technical Information  \nDesign Torque  \nDesign torque represents the maximum torque that an actuator must supply in an application. This maximum is the greater of the Demand Torque or the Cushion Torque. If the demand torque exceeds what the actuator can supply, the actuator will either move too slowly or stall. If the cushion torque is too high, the actuator may be damaged by excessive pressure. Demand torque and cushion torque are defined below in terms of load, friction, and acceleration torque.  \nEquations for calculating demand torque and cushion torque for some general applications are provided on the following pages.  \nT-Torque  \nThe amount of turning effort exerted by a rotary actuator. TD-Demand Torque  \nThis is the torque required from the actuator to do the job and is the sum of the load torque, friction torque, and acceleration torque, multiplied by an appropriate design factor. Design factors vary with the applications and the designers’ knowledge.  \nEquation 4-3) TD = Ta + Tf + TL  \nTL-Load torque  \nThis is the torque require","cbCain0HPPSU4cIS","https://ap.wps.com/l/cbCain0HPPSU4cIS","pdf",236398,"English","# Pneumatic Products\n## Fluid Power Graphic Symbols\n## Air Preparation Units\n## Pneumatic Valves and Actuator Symbols\n## Cylinders and Line/Connection Conventions\n## Actuator Technical Information (Design Torque)","[{\"question\":\"What does design torque represent for a pneumatic actuator?\",\"answer\":\"Design torque represents the maximum torque an actuator must supply in an application. It is the greater of the demand torque or the cushion torque, and inadequate torque can cause slow movement or stalling.\"},{\"question\":\"How are demand torque and cushion torque defined?\",\"answer\":\"Demand torque is the torque required from the actuator to do the job, combining load, friction, and acceleration torques with an appropriate design factor. Cushion torque is the torque needed to provide required deceleration by restricting flow to create back pressure.\"},{\"question\":\"What is the meaning of the line types in fluid power graphic symbols?\",\"answer\":\"Solid line indicates the main line, dashed line indicates the pilot line, and dotted line indicates exhaust or drain line. The conventions also include center line and enclosure outline usage.\"}]","Parker Pneumatic - Fluid Power Graphic Symbols - Technical Data | PDF",25]