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HDPE to stainless steel 316L transition

HDPE to stainless steel 316L transition

HDPE to stainless steel 316L transition

(OP)
What flexible fitting should be used for a transition from HDPE (8" DR-17) to a 8" Stainless steel 316L pipe in a corrosive environment?

RE: HDPE to stainless steel 316L transition

Without having more details on the service, a flanged flex/braided hose could be used.
If you need to know what should be used ... apart from it being always a personal choice, provide more details.

RE: HDPE to stainless steel 316L transition

I don't know the answer to your question, but I noticed the coupling you provided detail of appears to be an unrestrained, "stuffing-box" or mechanical type coupling. Before you apply same, I suggest you check the manufacturer of the coupling and pipes for their opinion of this coupling application.

RE: HDPE to stainless steel 316L transition

There are many PE to steel transition pieces available, some as pre made items able to fuse to the PE and weld to the steel such as this http://www.wask-uk.com/product_details.asp?ProdID=...

Just google "PE to steel transition fittings".... and talk to a decent looking supplier about your particular requirements. From the think you attached it doesn't look like you need much flexibility and you need to be careful about using seals to provide the flexibility. A lot of the mechanical joints like that ave very low or no axial strength and can easily pull out if subject to such forces.

BTW PE doesn't normally come in inch nominal size, but metric nominal OD such as 200, 225, 250, 280, 315 etc which often falls between standard steel nominal sizes. You need to specify which PE size you mean as "8 inch" could be any one of two or three sizes (200 or 225).

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

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