Eccentric Reducer Question

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bhalchandra Commentator Join Date: Aug 2010 Location: pune Posts: 69	Eccentric Reducer Question 10/04/2010 2:24 AM
	why we use eccentric reducer at pump suction and concentric reducer at pump discharge? __________________ Be not afraid of growing slowly, Be afraid only of standing still.
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Kaisan Power-User Join Date: Nov 2009 Posts: 296 Good Answers: 27	#1 Re: pump 10/04/2010 8:43 AM
	The suction side of a centrifugal pump is sensitive to any flow disturbance or air entrapment. An eccentric reducer with flat on top is the best way to minimise this. On the discharge side of the pump. the pump does not care any more so you can use what is cheapest and most convenient. __________________ I have no special talent. I am only passionately curious. Albert E
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MJCronin Power-User Join Date: Oct 2009 Location: Central Midwest Posts: 455 Good Answers: 38	#2 Re: Eccentric Reducer Question 10/05/2010 9:36 AM
	Banu... On the pump suction, good piping practice is to smooth the flow and design for ~3 ft/sec velocity. A reducer is necessary for the transition to the suction nozzle. Eccentric reducers eliminate possible suction side air entrainment. They may be FOT or FOB depending on the location of the suction source. On the pump discharge, the piping designer may do what he pleases. Reducers may or may not be installed, depending on the fluid design velocity and materials selected for the piping system. Velocities of 6 to 12 ft/second are common. Tell us about your particular system ? __________________ We have met the enemy....and he is us. POGO
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