Pneumatics Flow Control - Revision history

DT Online: Added Template

2016-06-26T17:54:41Z

Added Template

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	[[File:PneumaticTimeDelayReservoir.jpg\|300px\|right]]		[[File:PneumaticTimeDelayReservoir.jpg\|300px\|right]]

			=====Description=====

	In a [http://en.wikipedia.org/wiki/Pneumatic_circuit '''pneumatic circuit'''] there is always a delay between operating a valve and the piston moving. This is because the air takes time to flow through the pipes and to build up enough pressure to move the piston.		In a [http://en.wikipedia.org/wiki/Pneumatic_circuit '''pneumatic circuit'''] there is always a delay between operating a valve and the piston moving. This is because the air takes time to flow through the pipes and to build up enough pressure to move the piston.

	By introducing a reservoir into a pipe, we can increase the amount of time required to build up enough pressure, and hence build time delays into our circuits.		By introducing a reservoir into a pipe, we can increase the amount of time required to build up enough pressure, and hence build time delays into our circuits.


			=====Features and Applications=====

	In the circuit shown, when the valve is switched on, air flows slowly through the flow control valve and fills the reservoir. When pressure has built up, the pressure operates the pilot input to the second valve and the cylinder is activated.		In the circuit shown, when the valve is switched on, air flows slowly through the flow control valve and fills the reservoir. When pressure has built up, the pressure operates the pilot input to the second valve and the cylinder is activated.


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	[[File:PneumaticsFlowControlValve.jpg\|300px\|right]]		[[File:PneumaticsFlowControlValve.jpg\|300px\|right]]
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	[[File:PneumaticsFlowControlValveFixed.jpg \|200px]] [[File:PneumaticsFlowControlValveAdjustable.jpg \|200px]] [[File:PneumaticsUnidirectionalFlowControlSymbol.jpg \|200px]]		[[File:PneumaticsFlowControlValveFixed.jpg \|200px]] [[File:PneumaticsFlowControlValveAdjustable.jpg \|200px]] [[File:PneumaticsUnidirectionalFlowControlSymbol.jpg \|200px]]

			{{Pneumatics Valves Buyers Guide}}

	[[Category:Secondary]]		[[Category:Secondary]]
	[[Category:Pneumatics]]		[[Category:Pneumatics]]

DT Online at 08:50, 3 June 2015

2015-06-03T08:50:45Z

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	[[Category:Secondary]]		[[Category:Secondary]]
	[[Category:Pneumatics]]		[[Category:Pneumatics]]
	~~[[Category:Materials and Components]]~~

DT Online: Corrected category link

2015-04-30T21:43:52Z

Corrected category link

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	[[Category:Secondary]]		[[Category:Secondary]]
	[[Category:Pneumatics]]		[[Category:Pneumatics]]
	[[Category:Components]]		[[Category:Materials and Components]]

DT Online: Added category links

2015-04-28T16:07:28Z

Added category links

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	[[File:PneumaticsFlowControlValveFixed.jpg \|200px]] [[File:PneumaticsFlowControlValveAdjustable.jpg \|200px]] [[File:PneumaticsUnidirectionalFlowControlSymbol.jpg \|200px]]		[[File:PneumaticsFlowControlValveFixed.jpg \|200px]] [[File:PneumaticsFlowControlValveAdjustable.jpg \|200px]] [[File:PneumaticsUnidirectionalFlowControlSymbol.jpg \|200px]]

	{{Secondary Pneumatics}}		[[Category:Secondary]]
			[[Category:Pneumatics]]
			[[Category:Components]]

DT Online: Added Template

2014-11-22T15:59:17Z

Added Template

← Older revision		Revision as of 15:59, 22 November 2014
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	[[File:PneumaticsFlowControlValveFixed.jpg \|200px]] [[File:PneumaticsFlowControlValveAdjustable.jpg \|200px]] [[File:PneumaticsUnidirectionalFlowControlSymbol.jpg \|200px]]		[[File:PneumaticsFlowControlValveFixed.jpg \|200px]] [[File:PneumaticsFlowControlValveAdjustable.jpg \|200px]] [[File:PneumaticsUnidirectionalFlowControlSymbol.jpg \|200px]]

			{{Secondary Pneumatics}}

DT Online: Added flow control valve options

2014-11-22T15:53:47Z

Added flow control valve options

← Older revision		Revision as of 15:53, 22 November 2014
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	[[File:PneumaticsFlowControlValve.jpg\|300px\|right]]		[[File:PneumaticsFlowControlValve.jpg\|300px\|right]]
	Inserting a '''Flow Control Valve''' in the exhaust circuit of a cylinder will slow down the movement of the cylinder as the exhaust air has to work hard to escape through the restriction.		Inserting a '''Flow Control Valve''' in the exhaust circuit of a cylinder will slow down the movement of the cylinder as the exhaust air has to work hard to escape through the restriction. This is known as '''''metering out'''''.

			Shown below are the symbols for : a flow control valve set at a fixed value, a valve with an adjustable setting and a valve which allows flow in one direction only '''''(uni-directional)'''''- achieved the adding a check valve as indicated.

			[[File:PneumaticsFlowControlValveFixed.jpg \|200px]] [[File:PneumaticsFlowControlValveAdjustable.jpg \|200px]] [[File:PneumaticsUnidirectionalFlowControlSymbol.jpg \|200px]]

DT Online: Pneumatics Flow Control

2014-11-18T14:10:25Z

Pneumatics Flow Control

New page

[[File:PneumaticTimeDelayReservoir.jpg|300px|right]]
In a [http://en.wikipedia.org/wiki/Pneumatic_circuit '''pneumatic circuit'''] there is always a delay between operating a valve and the piston moving. This is because the air takes time to flow through the pipes and to build up enough pressure to move the piston.

By introducing a reservoir into a pipe, we can increase the amount of time required to build up enough pressure, and hence build time delays into our circuits.

In the circuit shown, when the valve is switched on, air flows slowly through the flow control valve and fills the reservoir. When pressure has built up, the pressure operates the pilot input to the second valve and the cylinder is activated.

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<span style="color: green">'''Note:'''
In this circuit we have used a uni-directional regulator to allow the stored air in the reservoir to exhaust quickly once the first valve is switched off, and hence the piston returns to its original position almost immediately as the first valve is switched off.
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[[File:PneumaticsFlowControlValve.jpg|300px|right]]
Inserting a '''Flow Control Valve''' in the exhaust circuit of a cylinder will slow down the movement of the cylinder as the exhaust air has to work hard to escape through the restriction.