I added an accumulator tank to reduce some of the noise in the fresh water, and also reduce the pump cycling. The tank provides storage of pressurimzed water so you can flush a couple times or get a glass of water without the pump cycling on immediately.

I purchased a Watts tank at Plumber's Surplus for $28.98 plus shipping, a lot cheaper than they had it for in Home Depot.

I wanted to mount it vertically so it would drain competely before winterization. There's still antifreeze in the system, so I haven't pressure checked it yet, but I plan to run it at 20 psi to start.

I added a shutoff valve directly below the tank so I can bypass it for winterization.

Here's how I installed it:

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2001 Suburban 8.1L/4.10 axle
CIPA extendable tow mirrors, custom PIAA lights and front hitch
Hensley Arrow
Honda EU 2000
2008 Terry 280 FQS