How Does/Does a Slot Drain Sink Hold Water?
Kaytlin Jacoby
5 years ago
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geoffrey_b
5 years agoRelated Discussions
on demand hot water - how long does it take to get hot water?
Comments (3)The time it takes for the hot water to get to your faucets or shower is related to the distance the water has to travel from the hot water source to the sink and the diameter of the hot water building supply pipe (typically 3/4 inch) as well as the feeder pipe to the sink (typically 1/2 inch). A 3/4 inch pipe holds about 8 ounces of water for every 3 feet of pipe. So if your tank (or tankless) unit is 90 feet away from a faucet, you would have to push out about 1.8 gallons of cold water (plus whatever water is in the feeder pipe, a 6 foot section of 1/2 inch pipe holds about 8 ounces of water) before the hot flows. A typical sink faucet will run at 1.5 gallons per minute maximum flow rate - so you are looking at over 1 minute to get hot water in this scenario. With tankless units, there is also a small delay between the time the unit senses water flowing through it (which triggers it to fire) and the time the unit heats the water up to the set temperature. There are 3 ways you can eliminate the long delay. The first is to put a hot water source (tank or tankless unit) closer to the sinks that are far away from the current source. The second way is to use point of use hot water generators under key sinks that you use. These POU units are very small tanks or tankless units designed to service just once sink. The last method is to install a recirculating loop where you constantly circulate hot water through the hot water building supply. I have a Rinnai tankless system that we installed in the basement directly below the master bathroom. From the time I turn on a shower or sink, hot water is flowing within 10 seconds. That was the good news. The bad news was that the kitchen sink and 3 other sinks that we use often are over 120 feet away from the Rinnai tankless units. Just before we finished the house, we discovered that it was taking several minutes to get hot water at the kitchen sink - and that was unacceptable to us. I wound up installing a recirculting loop. This was not the way I would have preferred to do it, but space and venting in the basement on that side of the house was an issue. You could just live with the delay you have - 1 minute isn't that bad. If you decide to fix the delay, I recommend posting some details on the plumbing forum and seeking advice on how best to correct....See MoreNew plumbing looks awful and sink does not drain.
Comments (9)it lets a little bit of air move out of the way when gravity pushes water down the drain. This starts the flow of water and helps set up a current (exchange of air and water). Otherwise the drinking straw effect can remain for a long time. In a drinking straw, water is held up on a pillar of air, and the water can only go down the straw if air is removed. In a pipe (much wider than a straw), air and water have to trade places so there needs to be an internal current inside the pipe, where water and air slide past each other on opposing sides (walls) of the pipe. An overflow hole on the side of the pipe an inch below the drain guarantees that air will escape under the pressure of water + gravity. Water, once moving, continues to move; this is momentum, or dynamic inertia. So the moving water forces more air out of the pipe, below the overflow hole....See MoreDoes anybody else's Shaws sink not drain properly?
Comments (6)I was so in love with my 30" Shaw farmhouse sink, then plumbing got installed and water pools in two corners quite a lot. I can not believe it! These sinks have been around so long. Proper drainage was not even something I imagined could be a problem. I am really worried about how it will be when I am actually cooking in the kitchen and using it. It will take more mindfulness and effort to keep clean. Has anyone had their Shaw sink replaced because of this? How hard is that after cabinets and counters are all in? Hope someone has encouraging words. I would love this not to be a problem. Might it be something one gets used to....See MoreDoes scoria hold water?
Comments (10)Thanks, Crenda. I really like the look of your plant with scoria as top dressing. I bought 2 small bags on sale at HD because they were $3 each. They seem to be about one-half to three-quarters of an inch, so probably like yours. I love the look, so I might as well try them. If they allowed evaporation more easily than decorative rocks, I'd be happy. Wow -- 24 inches! I'm north of you, up in Venice. Haven't monitored exactly how much rain. We are so lucky here -- we're between Sarasota and Port Charlotte and we never seem to get pelted as badly as they do. But we have had a lot. Sometimes I get bored with the FL sun, but -- I'd be glad to see some now!...See MoreAnne Duke
5 years agomiss lindsey (She/Her)
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5 years agolast modified: 5 years agogreg_2015
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