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Professor Toilet 101

Hello, my name is Professor Toilet. Welcome to my online classroom. I am here to help you learn about the toilet and the science behind how it works. In Flushology, the syllabus is simple. The content here will help you understand:

1. The science (hydraulics) behind a really good flush.
2. The greening of toilet flushing
3. How to fix problems when the laws of physics are over-ruled by a poorly engineered toilet that results in clogging, leaking, ghost flushing and other stress-inducing symptoms.

Browse the site, educate yourself and happy flushing.
Learn more about who Professor Toilet is.

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    Recent Posts

    Toilet Replacement

    Posted: 07.05.2010

    DIY Installation and performance of Low Flush Toilet

    A big shoutout to Todd, who has just replaced an old American Standard five-gallon flusher with H2Option.  Todd is going to save more than 10,000 gallons of water in the next year, according to our water saving calculator

    Here’s Todd in his own words:
    WOW!!!!

    I can not believe the efficiency of this thing. Try as we might we have not been able to get it to clog or not fully flush even with the .9 gallon flush. Read more: DIY Installation and performance of Low Flush Toilet.

    Toilet Humor

    Posted: 06.28.2010

    Bathroom Reading Month: Do You Read On the Toilet?| BlogHer

    Bathroom Reading Month: Do You Read in The Bathroom? | BlogHer.

    Do you read in the bathroom?  Many people multitask on the toilet, which isn’t too surprising, consider how many people text and drive.

    A 2008 study sponsored by American Standard shows that people are doing a lot of things inside their bathrooms besides the obvious.

    1. A full 88 percent use at least one electronic device in the bathroom.

    2. More than a third read their mail — both snail mail and e-mail.

    3. 15 percent talk on the phone, and three percent watch TV.

    Toilet Humor

    Posted: 06.22.2010

    Who Invented the Toilet?

    It’s pop quiz time. Who invented the toilet?

    A. The Professor (thanks, but way before his time)

    B. Thomas Crapper

    C. Sir John Harington

    Crapper’s got the name, but Sir Harington wins you the game.

    Harington invented his water closet design in the 16th century. It was truly a throne fit for a king… or queen. Harington’s godmother, Queen Elizabeth I, had the first one installed in Richmond Palace. Harington’s modern flush toilet model flourished, becoming a common fixture in Europe over the 18th and 19th centuries.

    Toilet design has continuously evolved since then. In 1992 the U.S. Congress passed legislation requiring new toilets to drain just 1.6 gallons per flush, instead of the average 3.5 gallons. Manufacturers, such as American Standard, are seeing how low toilets can go to conserve water resources and save consumers money without sacrificing performance.

    Visit Discovery News to learn more about potty pioneers!

    Saving Water, Toilet Humor

    Posted: 06.18.2010

    On Saving (Seltzer) Water at the Brooklyn Farmacy

    Like most people, the Professor enjoys a treat now and again, and nothing hits the spot like an old-fashioned chocolate egg cream. And in Brooklyn, New York, there is now a great new place to have one, thanks in part to the assistance of the TV show Construction Intervention. The shop is called the Brooklyn Farmacy, and proprietor Peter Freeman was about to give up on his dream of opening a neighborhood ice cream shop in a beautiful 100 year-old pharmacy because of the daunting amount of renovations the building required.

    Brooklyn Farmacy

    A chance encounter with the casting director of the television show saved the day, and Peter agreed to let the crew of Construction Intervention renovate the shop for an episode of the show. The Farmacy’s electrical wiring was re-done, structural problems with the building were fixed, a long soda counter was installed, and two new bathrooms that now feature WaterSense-certified toilets and faucets from American Standard were built.

    Brooklyn Farmacy bathroom american standard cadet flowise hampton faucet toilet

    Having comfortable and inviting bathrooms was important to Peter, who wanted a safe, clean environment for neighborhood kids to wash their hands before digging into a slice of his strawberry-rhubarb pie. The Professor also notes that the new water-saving fixtures also compliment his eco-friendly philosophy of buying locally and sustainably made products.

    Brooklyn Farmacy proprietor Peter Freeman poses with an egg cream

    Congratulations, Peter! The Professor tips his hat to you.

    Saving Water

    Posted: 06.08.2010

    Shower Systems, Water Conservation and the DOE

    The U.S. Department of Energy (DOE) is proposing a new interpretation of the term “showerhead” in the DOE’s regulations related to the energy conservation program for consumer products.

    The proposal will re-define showerheads as shower valves, allowing only a single showerhead using no more than 2.5 gallons per minute of water per showering compartment. Unless challenged, the new definition would take place by June 18.  (Source: Supply House Times).

    American Standard is all for water conservation and we back many federal, state and local government initiatives, such as the EPA WaterSense program.

    This action, however, is a significant step backwards from everything we now know about safe bathing for people of all ages, heights and abilities. Smart shower systems designed by experienced professionals have controls for different showerheads in the same shower enclosure, set at different heights for children, aging-in-place and universal accessibility.

    The new definition also threatens to increase costs to build schools and other institutions that require multiple showering areas, since separate shower valves will be required for every showerhead.

    Professor Toilet urges everyone to contact the DOE re: Docket No. EERE-2010-BT-NOA-0016

    1.  Leave comments for the DOE.

    2. Send an email.

    3. Write to: Docket No. EERE-2010-BT-NOA-0016, U.S. Department of Energy, 1000 Independence Avenue, SW, Washington, D.C. 20585

    PS:  Professor Toilet would prefer to see government action along the lines of   “cash for flushers.” (Of course, the Professor brings it back to toilets.)   Water conservation rebates implemented in many cities and counties around the nation have encouraged many homeowners to replace old water wasters with toilets that perform better on less water.

    Toilet Humor

    Posted: 06.04.2010

    Dog Days of Summer

    Summer is on its way, and in honor of the fun, more relaxed mood everyone finds themselves in this time of year, the Professor is giving in to an inner love of dogs. Maybe not an inner love of bathing dogs, but the convenient new OutReach bathroom faucet makes it really easy. And who doesn’t love a clip of an unbelievably cute dog being bathed with the pull-out faucet?

    Toilet Humor

    Posted: 06.02.2010

    A Life and a Marriage Saved by the Champion 4 Toilet

    The Champion 4 toilet from American Standard

    It’s likely that very few people make a hobby of reading toilet reviews the way the Professor does, but this take on the superior flushing ability of the Champion 4 up at HomeDepot.com is a must-read. Follow the link above for the touching story of how the virtually clog-free toilet kept an Atlanta resident out of federal prison and saved the life of a mother-in-law whose regular diet apparently consisted of “broccoli, cabbage, and gravel.” Enjoy.

    Saving Water

    Posted: 05.24.2010

    Dual Flush Retrofit Kits for Dual Flush Toilets – Do They Work?

    Sadly, no.  This is one to file under, “Too Good to Be True.”

    There are several aftermarket retrofit kits available today that promise to transform a standard toilet into a dual flush model that can “save more water than a high priced high-efficiency toilet.”

    Unfortunately, these gadgets simply regulate the amount of water entering the bowl and do nothing to alter the water flow in or out of the bowl.  Since bowl design is the most important factor in a toilet’s performance – and even more critical in low-flow toilets – these kits promise far more than they deliver.

    As the Professor has previously explained, standard and dual flush toilets have different flushing mechanics.  While standard toilets depend on siphonic action to “pull” waste out of the bowl, dual flush toilets rely on the “push” of water to clear the bowl.  More advanced technology, such as the WaterSense-certified H2Option Dual Flush Toilet, combines the traditional siphonic “pull” force with the newer “push” action associated with the washdown flush.

    Because standard toilet bowls are not specifically engineered for less water, homeowners will have as much luck using these retrofit kits as they would adding a brick to the toilet tank.  Both strategies try to “trick” toilet science and will likely result in incomplete flushes.  Worse, users will likely overcome this problem by – you guessed it – flushing again.  Multiple flushes eliminate any possible water savings.

    In addition to voiding the American Standard warranty on toilets, installing these types of gadgets will frustrate homeowners and discourage any future use of proven water saving technologies such as HETs and dual flush toilets.

    Physics, as it turns out, is it right up there with “can’t fool Mother Nature.”

    Saving Water

    Posted: 05.20.2010

    A Sustainable New Habitat

    A new Habitat for Humanity home in San Antonio

    The Professor would like to congratulate The Home Depot Foundation and the great team of American Standard Brands employees for all the great work they did at the 2010 Community Building Invitational, held yesterday in San Antonio, TX.

    Fifteen of these new homes, which are being built for Habitat For Humanity, will also feature sustainable bathrooms that include WaterSense-certified faucets, toilets, and showerheads donated by American Standard Brands. A job well done all around.

    Saving Water

    Posted: 05.11.2010

    Toilet Myth Busting: Water Saving Toilets Carry The Load

    Many plumbing professionals worry about the ability of water saving toilets to sufficiently carry waste to the sewer. While architects typically determine the sizing, pitch and venting requirements for drain lines, Professor Toilet and other toilet scientists focus exclusively on the science of effective flushing.

    Coined “Drain Line Carry,” the ASME Standard requires that every toilet – regardless of water volume used in a flush – be able to drive 100 ¾-inch polypro balls down a 3-inch rigid pipe an average of 40 feet.  All of American Standard’s water closets meet this standard and many, including Champion 4, Cadet 3, Colony FitRight, Evolution2 and H2Option, exceed that requirement by more than 16 feet. Here’s where we test:

    Helping to transport waste through drain lines is what engineers term “supplemental flow,” or additional water generated from faucets, showers, clothes washing, etc., which is obviously more prevalent in residential than commercial applications.

    In other words, drain line clogging isn’t likely to be caused by a water saving toilet. Other common causes of drain line clogging are broken or misaligned pipes, buildup of grease or grit within the drain, as well as flushing inappropriate materials.

    Special note to commercial building professionals: Installations with extremely long drain lines (e.g., shopping malls or industrial sites), may require evaluation on a site-by-site basis, especially if no supplemental flows are available.

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