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Back Flush Toilet with reservoir (C) Daniel FriedmanBack-Flush Toilets
Types, brands, sources, repairs

Guide to back-flush toilets, usually wall-mounted such as shown in our page top photo. These wall-mounted toilets are principally of two designs: flushed using a water reservoir tank or using building water pressure with no reservoir tank.

This article series describes the different types and models of toilets: historical or old toilet types, wooden high wall-tank toilets, conventional reservoir tank toilets, low-flush toilets, water saving toilets, back-flush toilets, up-flush toilets, and even chemical toilets.

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

- Daniel Friedman, Publisher/Editor/Author - See WHO ARE WE?

Back Flush or Rear Flush Toilets Using a Reservoir Tank

Back flush flush valve toilet in Norway (C) Daniel FriedmanShown here is a rear-flush toilet manufactured by Crane and installed in the Mansfield Hotel in New York City. This toilet uses a conventional water reservoir tank to accomplish toilet flushing.

A back-flush toilet is designed to flush horizontally out of the lower back of the bowl into a waste pipe that is mounted in the wall behind the unit. In comparison, a standard bottom-flush toilet is connected to a waste pipe in the floor below the unit.

In this article you'll see five variations of back-flush toilets or water closets:

A traditional back-flush toilet is designed to work by gravity alone.

A back-flush toilet that does use a reservoir tank is also produced for special situations such as a location that prohibits installing a drain line in the floor below the toilet.

At the top of this page we illustrate a back-flush toilet installed in a Two Harbors Minnesota home built in the 1960's.

[Click to enlarge any image]

Our back-flush toilet photo below illustrates a floor-mounted, reservoir-tank or cistern, back-flush toilet located in a basement of a home found in the Hudson Valley of New York.

In this basement the sewer line ran just a few inches above the basement floor.

Back Flush Toilet with reservoir (C) Daniel Friedman

The plumber mounted a back-flush toilet on a short concrete pedestal, raising it just enough to flush into the nearby sewer line found in the wall behind the toilet.

Back or Rear Flush Toilets, Tankless: Using Water Pressure, No Toilet Tank

Back flush flush valve toilet in Norway (C) Daniel Friedman

Above is a photo of a modern tankless, back-flush, flush valve operated toilet installed in Molde, Norway. This toilet is also a back-flush model, sending waste out of the bowl towards the rear of the toilet and into a waste line in the building wall rather than in the floor.

The flush control for this tankless back-flush toilet is that round button just above the toilet tissue holder. It's not always obvious whether the toilet is being flushed by a reservoir or cistern hidden in the wall or by water pressure alone using a flushometer valve.

But some back-flush toilets using building water pressure and a flushometer valve like the Sloan HET (below) are easily identified by noticing the presence of a traditional flushometer valve.

Below: The Sloan HET Efficiency-Series wall-hung water closet illustrates this use of a Sloan flushometer valve to flush the toilet.

Sloan HET wall hung water closet using a Sloan flushometer cited & discussed at InspectApedia.com

Other wall-mounted water closets (toilets) such as the DXV or the Toto Aquia® shown below use a cistern or "toilet tank" that is mounted within the wall cavity.

Modern brands of rear-flush toilets include the companies and toilet installation guides given just below.

Toto Aquia back flush wall hung dual flush toilet - www.totousa.com ... Toto Aquia back flush wall hung dual flush toilet - www.totousa.com

Wall-Mounted & Back or Rear Flush Toilet Installation & Operation Manuals

Kohler Patio model wall hung toilet mounting detail cited & discussed at InspectApedia.com

Grohe Wall Mount Concealed In-Wall Tank Toilet at InspectApedia.com


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Continue reading  at IN-WALL FLUSH TANK TOILETS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.

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BACK FLUSH & WALL MOUNT TOILETS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.


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INDEX to RELATED ARTICLES: ARTICLE INDEX to TOILET INFORMATION

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