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Old 02-10-2016, 08:57 PM   #1
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plastic pipe

I am installing winterizer hose on my salem cruise lite, due to lack of space I have to use a hose that I buy from home depot like the attached.
I've been wondering, all pipes and fitting in RV are all made of plastic.
Is there a specific reason that they are all plastic not metal/brass ?

See the picture attached, the hose that I bought at home depot has stainless steel screws at the end, and the screws attached to pump that is made of plastic.
Is there a concern there ? maybe stainless steel against plastic causes the plastic to break during vibration ? And that's why all RV pipes are made of plastic ?
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Old 02-10-2016, 09:02 PM   #2
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I didn't see any picture, but the reason they use plastic fittings are they weigh less and cost less. You can use your metal fittings with the plastic.
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Old 02-10-2016, 09:12 PM   #3
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Quote:
Originally Posted by pawntan View Post
I am installing winterizer hose on my salem cruise lite, due to lack of space I have to use a hose that I buy from home depot like the attached.
I've been wondering, all pipes and fitting in RV are all made of plastic.
Is there a specific reason that they are all plastic not metal/brass ?

See the picture attached, the hose that I bought at home depot has stainless steel screws at the end, and the screws attached to pump that is made of plastic.
Is there a concern there ? maybe stainless steel against plastic causes the plastic to break during vibration ? And that's why all RV pipes are made of plastic ?
Plastic pipes are the way most house plumbing is going. The DS & DIL house plumbing is very much like the RVs. All the valves are plastic on our house as well the faucets are metal though. Brass is made with lead so you will not see it in plumbing too much today when it is used for drinking water.

Plastic is less rigid as well it accepts vibration well. Our 1973 Terry had copper piping which at times was problematic.

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Old 02-10-2016, 09:17 PM   #4
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sorry here's the picture.
Is that Ok, from the picture, that I connect stainless steel scew head against plastic pump ?
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Old 02-10-2016, 09:18 PM   #5
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post the image again. see that metal screw head is connected to black plastic thread from the pump. My concern is the metal screw head is too abrasive to the black plastic thread
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Old 02-10-2016, 09:28 PM   #6
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The threads shouldn't move once tightened and using metal fittings won't be an issue. The Pex plastic piping in newer RVs is good stuff. Very durable and easy to work with.
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