RV Holding Tanks

Two features separate the 8H from the plain boxes in Ronco's 22 gallon class, and both are about installation. The end dump puts the waste valve at the end of the tank, where slide-out dump hardware...

Two hundred eight pounds. That is what the 25H weighs when its 25 gallons of waste water are aboard, at 8.34 pounds per gallon, and it is the number your tank cradle, straps, and floor structure...

When the tank you are replacing has no legible part number, the 72H is one of four 27 gallon shapes Ronco keeps molding, and the family is best searched by elimination. Start with the dimensioned...

A 27 gallon black tank holds about 225 pounds when it is time to dump, and the 64H is built for exactly that duty cycle: fill over days, carry down the highway, drain in minutes, repeat for years. It...

Molded rails are the 27H's argument. These integral flanges along the tank body take mounting straps or bolt-on brackets directly, letting the tank hang in the coach on its own structure, the way...

A 27 lb shell that carries roughly 367 lb of waste - that is a working ratio of over 13 to 1, and it is what rotational molding does well: a seamless polyethylene body with material distributed where...

The 57H solves the corridor problem: 16 gallons of holding capacity in a 63 x 10 x 8 inch run, a tank shaped like the space beside a driveshaft or along the outboard side of a frame rail. Ten inches...

On paper the 58H and its sibling are twins - both 16-gallon holding tanks, both 63 x 10 x 8 inches, both 19 lb blanks. The difference lives in the mold: each carries its own arrangement of molded...

Twenty-six gallons in a 28-inch-long package: the 54H is the space-efficient member of its size class, a 28 x 22 x 11.5 inch box that fits compartments too short for the sprawling shapes. The blank...

At 25 lb for 42 gallons of capacity, the 74H is the lightest shell in Ronco's 42-gallon holding quartet - the pick when the tank rides in a supported cradle or framed compartment and the installer...

The 70H is the 15-gallon holding tank you buy for the rough route. At 19 lb it carries meaningfully more polyethylene than the standard blank in this size, and that extra wall is what stands between...

Start with the drawing on this one. At 16 lb empty the 104H sits at the light end of the 15-gallon class, easy to trial-fit repeatedly through an access hatch. Full, it carries about 125 lb of gray...