pipingdesign: Re: POLY ETHYLENE -ALUMINUM- POLY ETHELYNE PIPES

From: <bbullough@foth.com>
Date: Fri Nov 02 2007 - 08:35:00 EDT

Sanjib:

Polyethylene and polypropylene pipe can be used in water, wastewater, and some inorganic chemical environments, but also only when there is low abrasion and temperatures and pressures are moderate. If temperatures or pressures are going to be very high, it should not be used. Depending on the grade, the price will vary. It is going to be more costly than PVC, and can be more costly than copper. If used in the proper way, it will probably last 30 plus years. Laboratories usually don't last that long, not do the microchip and pharmaceutical plants into which the pipe is installed. If it is in a fire, it will melt. But, because it is used on aqueous service, it does not make the fire worse. as for leaching into the process (the water, etc.), non-pigmented (no coloring added) PP pipe is the only material recommended for ultrapure water (OK, adequately lined pipe can be used, too, but fitting and maintaining lined pipe can be a challenge). PP and PE have less of anything that can or will leach into the water or chemical. Copper, iron, and others always slowly dissolve into water. There are some standard specs, and they vary with the grade - talk to the supplier. And, depending on where you are at, it is a food grade product. But, it does not have the heat and chemical resistance of many others, so it might not be adequately cleanable. You need to check with your jurisdiction.

... Bruce D. Bullough ...

Lead Process Engineer
Foth Production Systems, LLC
8550 Hudson Boulevard North, Suite 100
Lake Elmo, MN 55042
Direct: +651-288-8598 Fax: +651-288-8551 <a href="http://www.foth.com">http://www.foth.com</a>

IMPORTANT NOTICE
This communication including any attachments, (E-mail) is confidential and may be proprietary, privileged or otherwise protected from disclosure. If you are not the intended recipient, please notify the sender, permanently delete this E-mail from your system and destroy any copies. Any use of the E-mail, including disclosure, distribution or replication, by someone other than its intended recipient is prohibited.

This E-mail has the potential to have been altered or corrupted due to transmission or conversion. It may not be appropriate to rely upon this E-mail in the same manner as hard copy materials bearing the author's original signature or seal.

sanjib basu <basusan2000@yahoo.com> Sent by: <a href="/group/PipingDesign/post?postID=wc-ODoowxocV3rL3_6r9B07_RYIKst1-xyq8aMpt7oUo0nhERlDnrRnFux_Pnz9mshjLsO2UTfRovLKzHIPjTJB8yVTe4WY">PipingDesign@yahoogroups.com</a> 11/01/2007 11:34 PM
Please respond to
<a href="/group/PipingDesign/post?postID=wc-ODoowxocV3rL3_6r9B07_RYIKst1-xyq8aMpt7oUo0nhERlDnrRnFux_Pnz9mshjLsO2UTfRovLKzHIPjTJB8yVTe4WY">PipingDesign@yahoogroups.com</a>

To
<a href="/group/PipingDesign/post?postID=wc-ODoowxocV3rL3_6r9B07_RYIKst1-xyq8aMpt7oUo0nhERlDnrRnFux_Pnz9mshjLsO2UTfRovLKzHIPjTJB8yVTe4WY">PipingDesign@yahoogroups.com</a> cc

Subject
Re: [PipingDesign] POLY ETHYLENE -ALUMINUM- POLY ETHELYNE PIPES

Bruce,

Can you please advise a little more on this type of Pipes.

Which are the areas use of this type of pipes can be specified?
This pipe will replace what types of pipes previously used: GI, Copper..?
What is the price of say 1/2', 3/4" pipe in USD/ Metre in USA
Design Life expectency of this pipes vs: Cu or GI ? Can we take 30/50 years guranteed Design life?
What happens in case of a fire?
You said the Pipe is less prone to get into solution.. less than which pipe?
Is there a specification standard to be reffered to by manufacturer/ Designer/ Buyer
Is this food grade Product?

Is it too much to ask? I was very impressed looking at the samples & colors of this pipes and want to use it.

Sanjib Basu

<a href="/group/PipingDesign/post?postID=u6pQafJjjYDXU6u3hNayJ8tC0j2mBlbGvL0RtP-Fele9C57dCptRJsEuzVwWvNzULzhp4AGjMGIBCr0zyQ">bbullough@foth.com</a> wrote: Jamal,

PE pipe has several advantages for laboratory water:

easy and less costly to run (glued, not threaded, flanged or welded)
smoother bore and "cleaner" fittings, less chance for debris to buildup

and much less opportunity for biota (microbes, bacteria) to buildup 3) less to dissolve or extract into the water, leading to contamination

Lab water use is fairly erratic, so buildup of "crud" can be more of a problem that other uses. Uniformity of quality throught the system and over extended period of times is also important.

IMPORTANT NOTICE
This communication including any attachments, (E-mail) is confidential and

may be proprietary, privileged or otherwise protected from disclosure. If you are not the intended recipient, please notify the sender, permanently delete this E-mail from your system and destroy any copies. Any use of the E-mail, including disclosure, distribution or replication, by someone other than its intended recipient is prohibited.

Jamal Muhammed <jamalmkc@yahoo.com> Sent by: <a href="/group/PipingDesign/post?postID=wc-ODoowxocV3rL3_6r9B07_RYIKst1-xyq8aMpt7oUo0nhERlDnrRnFux_Pnz9mshjLsO2UTfRovLKzHIPjTJB8yVTe4WY">PipingDesign@yahoogroups.com</a> 11/01/2007 06:55 AM
Please respond to
<a href="/group/PipingDesign/post?postID=wc-ODoowxocV3rL3_6r9B07_RYIKst1-xyq8aMpt7oUo0nhERlDnrRnFux_Pnz9mshjLsO2UTfRovLKzHIPjTJB8yVTe4WY">PipingDesign@yahoogroups.com</a>

To
<a href="/group/PipingDesign/post?postID=wc-ODoowxocV3rL3_6r9B07_RYIKst1-xyq8aMpt7oUo0nhERlDnrRnFux_Pnz9mshjLsO2UTfRovLKzHIPjTJB8yVTe4WY">PipingDesign@yahoogroups.com</a> cc

Subject
[PipingDesign] POLY ETHYLENE -ALUMINUM- POLY ETHELYNE PIPES

DEARS,
I FOUND ONE OF THE PROJECT POLY ETHYLENE -ALUMINUM- POLY ETHELYNE COMPOSITE PIPES IS TO BE USED. PLEASE ADVICE ME WHAT IS THE ADVANTAGES OF THIS PIPES IN LABORATORY HOT& COLD WATER SYSTEM. REGARDS JAMAL Received on Fri Nov 02 08:35:00 2007

This archive was generated by hypermail 2.1.8 : Tue Mar 04 2008 - 11:40:52 EST