The Watts PLT-5 was preset real low at 20 psi and the pump goes to 35 psi (I think) with a stated capacity of 6 quarts ... I get about 3 quarts before the pump comes on and recharges it. If I dropped it to say 10 or 15 psi I might get a gallon between cycles, but it works as is so I haven't changed it yet.

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John

2007-22T TowLite 50th Anniversary, Valley Towing Equalizer Hitch
2008 Nissan Frontier SE 4X4 Crew Cab, Snug Top & McKesh Mirrors
Cooper AT3 LT265/70R16 AT w Slotted Rotors, Ride-Rite Air Springs

Thanks for the quick answer!

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Les

2006 22ft towlite (replaces 97 21TL)
2006 Toyota tacoma pre-runner 4.0 L V-6 quad cab
w/ 98 chevy Powervision towing mirrors

For those of you that want to install an expansion tank and live in an area that requires winterization I suggest mounting the tank vertically with the fitting on the bottom so all the water will drain out when clearing the water lines.

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Great Wife, Joyce
2010 2310H Hi-Lo
2012 F150 4X4 SuperCrew EcoBoost w/Leer Cap
Reese WD Strait-Line Hitch
Amateur Radio K3EXU