Re: Pipe Fittings

• In PipingDesign@yahoogroups.com, mustafa rayees <mustafa_nlg@...> wrote:
  >
  >
  > Dear Friends,
  >
  > Hi To everybody , This is mustafa ,Presently working
  > for chilled water piping design. I am having
  > difference of opinion to use concentric reducers.
  >
  > My argument is that we can use concentric reducers in
  > horizontal & vertical pipes While my colleague is
  > saying not to use concentric reducers in horizontal
  > pipes.
  >
  > Please let me know any piping design recommend for
  > above
  >
  > I will be thankfull if you give me correct information
  >
  >
  > Thanks indeed.
  >
  > Mustafa
  >
  > Designing Eng.
  >
  >
  > My dear friend, what your colleague says is right. the concentric
  reducers should not be used in horizontal piping unless inevitable. the reason is 1) the elevation of pipe (BOP) running with respect to reference of ground will be changed, 2) the sludge trap cannot be achieved (with concentric reducers), 3) the air trap cannot be achieved (with concentric reducers). so eccentric reducers should be used in horizontal piping.

coming to concentric reducers, in vertically mounted pipes the above mentioned points for vertical piping does not make any difference other than the (unit length). so concentric reducers are used in vertical piping.

hope my knowledge of reducers may be useful for you. naveen