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Thread: Galvanized Pipe or Plastic Pipe for Plant water supply?

  1. #1
    Join Date
    Apr 2012
    Location
    Shenzhen, China
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    27

    Galvanized Pipe or Plastic Pipe for Plant water supply?

    I am curious as to what are the thoughts on piping for a plant water supply, Galvanized Pipe or Plastic Pipe. We are getting ready to install a closed looped system in one of factories that currently has galvanized piping. Looking at some of the pipes that we have removed, there is a lost of corrosion.

  2. #2
    Join Date
    Aug 2011
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    541

    Re: Galvanized Pipe or Plastic Pipe for Plant water supply?

    Plastic (CPVC) doesn't rust or corrode!

    KOM

    brent
    Last edited by brentb; 29th June 2018 at 04:09 PM. Reason: grammar

  3. #3
    Join Date
    Jul 2012
    Location
    Belle Vernon, PA
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    119

    Re: Galvanized Pipe or Plastic Pipe for Plant water supply?

    Quote Originally Posted by brentb View Post
    Plastic (CPVC) doesn't rust or corrode!

    KOM

    brent
    x2 for SCH 80 pipe

  4. #4
    Join Date
    Jun 2018
    Posts
    10

    Re: Galvanized Pipe or Plastic Pipe for Plant water supply?

    Quote Originally Posted by tbramel View Post
    I am curious as to what are the thoughts on piping for a plant water supply, Galvanized Pipe or Plastic Pipe. We are getting ready to install a closed looped system in one of factories that currently has galvanized piping. Looking at some of the pipes that we have removed, there is a lost of corrosion.
    What we do where I work, is we have galvanized pipes running everywhere for just about anything including water. We treat our water first with the normal salt brine, and the water that is used on the molds, and in the TCU's is treated with HCL, and that has stopped our corrosion for quite a while.(years)

  5. #5
    Join Date
    Aug 2011
    Location
    Upstate of South Carolina
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    597

    Re: Galvanized Pipe or Plastic Pipe for Plant water supply?

    Use the schedule 80 or better plastic lines. Lines that carry water back from thermolators to trunk lines should be galvanized or stainless steel due to creep/bowing of the line when a unit bleeds off some hot water for an extended time before someone realizes it. I’d use 6” supply and 8-10” return lines. It negates static or head pressure that reduces overall flow.
    Rick.

  6. #6
    Join Date
    Oct 2016
    Location
    McMinnville, OR
    Posts
    111

    Re: Galvanized Pipe or Plastic Pipe for Plant water supply?

    Rick, I have seen plastic pipes "explode" from that very thing LOL. Makes a big mess.

  7. #7
    Join Date
    Aug 2011
    Location
    Upstate of South Carolina
    Posts
    597

    Re: Galvanized Pipe or Plastic Pipe for Plant water supply?

    I’ve seen black pipe and galvanized do the same thing including rusting completely through! Same as people taking the air line off the bottom of the trunk line and then wondering why they have water in the lines!?
    Rick.

  8. #8
    Join Date
    Aug 2011
    Posts
    541

    Re: Galvanized Pipe or Plastic Pipe for Plant water supply?

    Original query concerned plant water piping.

    KOM

    brent

  9. #9
    Join Date
    Feb 2018
    Posts
    2

    Re: Galvanized Pipe or Plastic Pipe for Plant water supply?

    Don't be afraid to use plastic. No problem here

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