re plumb water system

[Rob]

Hello Peggyon my long list of projects...this coming layup "after this sailing year" I want to rebuild my plumbing system.The hoses currently installed are ptex?....its the grey 3/8"id semi flexiblble hoses, t's elbows and valves.I was talking with my marina over the weekend and they told me that the practice of today is to install 5/8" id reinforced flex hoses with blue and red codeing for hot and cold......I just installed a new sesor max 4.5gpm pump for my system but I would like to increase the flow out of the shower heads,,maybe as suggested I will install another pump closer to the shower head itself to increase flow..My question to you is he correct???..is the 5/8"hoses the correct choice for this project?ThanksRob

 

[Peggie Hall/HeadMistress]

Every fresh water pump/plumbing I've ever seen

uses 1/2" plumbing. The only place I know of where 5/8" is used is on tank vents. But, I've been wrong before, so if I were you, I'd use the size specified in the instruction for your new pump.

 

[O salt]

Tubing size

At what pressure is the pump rated for?How many faucets do you have?How many do you plan to have on at the same time?The reason I ask is; If you have only 2 faucets and plan to use only one at a time you can probably get by with 1/2" tube. If you have 3-5 faucets and the possibility it that some one could turn on a faucet while you are in the shower I would plumb your main branch with 5/8" and the lines going to the faucets with 1/2". For this many faucets your pump is probably too small also. With the right size pump and your piping plumbed as suggested, you should not have a change in temp while showering when someone else uses a faucet.