1/2" pex to and from the water pump

[ericc]

I'm re-plumbing my 1974 27' overlander with 1/2" pex and now I'm up to the water pump (which I'm replacing with a new shur-flo pump). My question is can I use 1/2" pex everywhere, including into and out of the 3 gpm pump, or do I need something larger. My old pump was plumbed with something larger that looked like water hoses.

Thanks for the help.

[Minno]

1/2" is fine. Just get fittings that fit your pump. The larger hoses might be a replacement or repair by a PO.

Chris

[TG Twinkie]

I would use a flexible connection to prevent more noise from the pump being transferred to the PEX and have it rattle throughout the trailer. Put a 1/2" female threaded fitting on the end of the PEX then screw in a hose barb fitting of the appropriate size for the hose.

[Bill M.]

I put in a new water pump and plumbed it with Pex. I put in a U loop to give it some flexibility in positioning. Works fine and makes less noise than the old pump with the hoses. I did not go all the way into the tank. I put a barb to Pex at a easy to access place at that end.

[ericc]

Bill, do you have any pictures of this set up?

[purman]

1/2 inch is fine. thats what I used. I have two fresh tanks going into one pump. you can see a picture of my set up here: http://www.airforums.com/forums/f174...a-90934-8.html Post #104

I put in a bypass to fill the tank under the trailer. you can't see it in the picture but I put the foam wrap pipe insulation around all my pipes to reduce noise. You can hardly hear it any more. It use to bang and vibrate before..

I just have some screw on fitting for the pump and they come off easy.