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11 Ga or Sched 10s 316L for vacuum system

11 Ga or Sched 10s 316L for vacuum system

11 Ga or Sched 10s 316L for vacuum system

(OP)
We are optimizing our vacuum system in a pulp machine room and will be running a bunch of 4, 6, 8, 12 and 14"Ø 316L pipe.  The mill spec developed in the 60's called for 11 ga pipe.  However it seems this is from  the days when 11 ga was the cheaper alternative.  Now it is more expensive so I wanted to consider using sched 10s, possibly with Victualic or similar connections.  As we are working with an exisiting plant, there will be allot of bends and twists to get around the existing piping.

I really have two questions:
1.  What are the disadvantages of IPS Sched 10s over 11 Ga pipe over this range of diameters.  It has been suggested that the 10s will be less flexible and more costly to put bends and flanges in.  It was also suggested that you could only get Lap joint flanges for 10s and that the shorter rolled angle style stub ends could not be found for use with backing flanges (Vanstone style).  Any truth to this?  The shorter style would mean better routing flexibility and less cost.  What aout the cost of ell's etc in 10s?

2. Is there a way to efficiently design with Victaulic when running stainless?  I realize there will be a cost savings in the welding but the cost of fittings is outrageous especially at 14"Ø

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