valve

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manas_dr Associate Join Date: Sep 2008 Posts: 35	valve 08/29/2009 1:25 AM
	hey what is the criteria for selection of direction control valves. is it flow restriction. i am supposed to use 3/2 valve(3 position, 2 way).
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nick name Guru Join Date: Mar 2007 Location: City of Light Posts: 3943 Good Answers: 183	#1 Re: valve 08/29/2009 5:33 AM
	Or 2 position 3 ways?
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yesyen Guru Join Date: Jul 2006 Location: India-Chennai. Posts: 722 Good Answers: 30	#3 In reply to #1 Re: valve 08/30/2009 2:01 AM
	"2 position 3 ways", Very right. Can a '3 position 2 ways', possible? Common, '2 position 3 ways' are basically ball or plug types. Typical applications include: valves at filters and coolers. Typical requirement: to divert the common inlet flow to one or the other filter (or cooler). Advantage: Shutting down one filter (or cooler) and commissioning the other can be simultaneously done by a single quarter/half turn. Normally the flow restriction is not preferred but might happen for cost/economical reasons. __________________ A picture worth thousand words: needless to say if it is animated.
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nick name Guru Join Date: Mar 2007 Location: City of Light Posts: 3943 Good Answers: 183	#4 In reply to #3 Re: valve 08/30/2009 7:34 AM
	3 positions 2 ways is possible with both closed or open. 3 positions 3 ways as well. Choice made for the expected flow and wished pressure drop.
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yesyen Guru Join Date: Jul 2006 Location: India-Chennai. Posts: 722 Good Answers: 30	#8 In reply to #4 Re: valve 08/31/2009 5:47 AM
	Can you please include a 'graphical symbol' of this 3 position 2 ways valve... __________________ A picture worth thousand words: needless to say if it is animated.
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Anonymous Poster	#5 In reply to #3 Re: valve 08/30/2009 8:05 AM
	Thank You for such a nice reply
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raybaxi Participant Join Date: Mar 2009 Location: I am citizen of Canada but now stay in Iran Posts: 4	#7 In reply to #1 Re: valve 08/30/2009 12:06 PM
	With this valve you are not able controll things and you have to be in 2 positions with 3 way valve or 2 or something like that.i think you need to have a mogulation valves with multi step positions and controlle it with a driver if you wanna make a easy robat. raybaxi
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kuki Active Contributor Join Date: Aug 2007 Location: India,Delhi Posts: 14	#2 Re: valve 08/30/2009 1:49 AM
	yes, basically it depends on your need too
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DRFREON Power-User Join Date: Nov 2008 Posts: 158 Good Answers: 1	#6 Re: valve 08/30/2009 8:55 AM
	This is called a non-proportional diverting valve. Honeywell is a great resource for selection- you have to know a little engineering, though.
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Anonymous Poster (1); DRFREON (1); kuki (1); nick name (2); raybaxi (1); yesyen (2)

You might be interested in: Valve Position Indicators, Gas Valves, Industrial Valves

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