What is difference in using eccentric reducer and concentric reducer ?
The reducer to be used as downstream and upstream of level control valve and not pump.
- alpha bLv 71 decade agoFavourite answer
#The only situations where It is advisable to use eccentric reducers are for slurry systems and where it is imperative to totally drain ALL condensed fluid. In both these situations, eccentric reducers can avoid small "dead spots" that exist behind concentric reducers. The only place I'd use flat side up eccentric reducers would be in pump suction line to avoid accumulation of gas pockets.
#The general recommendations, from a process point of view, to avoid adversely altering the CV characteristics and capacity are:
1. Avoid arrangements that can result in a nozzle-effect into the CV
2. Avoid closed-coupled inlet block valves reduced from line size
3. Avoid contorted manifolds to achieve accesibility, in particular in block-and-bypass arrangenments
4. Use straight-line pipe sections into and out of the CV as needed for the CV, as originally established by the control engineer. A ROT for reducers and expanders: 12
nominal pipe diameters (NPD) upstream and 5 downstream. For elbows on the same plane 18 NPD upstream, 30 NPD if not on the same plane.
- Anonymous4 years ago
Eccentric ReducerSource(s): https://shrinks.im/a8afH
- 1 decade ago
typically you should use a eccentric reducer with the flat on the bottom but this depends on the service the pipe is conveying, at a guess you are running a water line and this would be for make up water into a tank and would be under 4" in size. A eccentric reducer will give a more constant flow through the control valve rather than a concentric which will give your more flow disruption and will cause problems with your control valve failing. Also the reducer should be placed approx 5D (pipe diameters) from the control valve.Source(s): engineer
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- oil field trashLv 71 decade ago
Either will work in this appliation but the concentric reducer may be a bit more available. Also there is no question as to which side should be up with a concentric reducer.
- Anonymous5 years ago
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The only situations where It is advisable to use eccentric reducers are for slurry systems and where it is imperative to totally drain ALL condensed fluid. In both these situations, eccentric reducers can avoid small "dead spots". This is useful at the suction side of a pump when the fluid the pump drives could contain another substance with different density.
- 1 decade ago
The concentric reducer is shaped like this \ / the eccentric reducer is shaped like this | /. Eccentric reducers are usually used for applications where full draining is needed because you don't have to tilt them as much to get it to drain. (I always buy eccentric because they do everything a concentric can but have the ability to fully drain when on the horizontal.)
- 7 years ago
Swage is the type of fixture that has a function similar to the reducer. Swage used if pipe size reduction up to 1-1/2 "and smaller. Swage is also available in two types, namely concentric and eccentric. Form depending on the end of the continuation method is needed, as follows:
a. Plan End (PE)
b. Tread End (TE)
c. Bevel End (BE)
- Anonymous1 decade ago
No one could have said better than Beaker. Eccentric means not having a common center and concentric means having a common center. Beaker is right.