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41 votes

Adding salt pellets direct to home water tank

Ignorant advice from Home Depot - confirmed to be ignorant. And wrong. Water softener salt does not soften water. Water softener salt displaces the calcium (and other) ions bound to water softener ...
Ecnerwal's user avatar
  • 221k
21 votes

In what situations could "dirty water leak into" municipal water pipes besides a catastrophic loss of pressure?

When there is no flow in an underground water supply pipe under pressure, a small crack or a loose joint in the pipe can only leak water. Contaminants can't get in. However, as soon as there is flow, ...
MTA's user avatar
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19 votes

What metal is most suitable for a ladder submerged in an underground water tank?

Stainless steel is the obvious choice. Which exact grade is probably more dependent on what you can easily find than what the "most perfect for the job" grade might be, but 316 or 316L would be high ...
Ecnerwal's user avatar
  • 221k
10 votes
Accepted

Is it worthwhile to manage concrete cure process after mismanaging it?

Can we put water back onto them and slow down this cure? You misunderstand utterly. Concrete does not "dry" and cure - concrete sets and needs moisture to cure - it's a chemical reaction. ...
Ecnerwal's user avatar
  • 221k
9 votes

In what situations could "dirty water leak into" municipal water pipes besides a catastrophic loss of pressure?

Backsiphonage and backpressure The situation you ask about in your question is called backsiphonage, where pressure demand (suction) in a line that isn't adequately pressurized pulls in contaminants. ...
ThreePhaseEel's user avatar
9 votes
Accepted

Can you help explain the components of my water system?

The cistern in the house is "traditional UK" as I understand it. Most of my UK friends consider them outmoded. IIRC they were used in part because the municipal supply in many areas was low ...
Ecnerwal's user avatar
  • 221k
8 votes

In what situations could "dirty water leak into" municipal water pipes besides a catastrophic loss of pressure?

Here happened that a factory (wine bottling facility) pushed pollutant (wine in our case) in the city water mains. Authorities said the pressure used by the facility was higher than the acquaduct's ...
DDS's user avatar
  • 2,393
7 votes
Accepted

Is using a globe valve on a water supply line a bad idea?

A gate valve does not have a "washer set". The valve in the photo appears to be a globe valve. I agree with your plumber that a globe valve is proper in that place. A gate valve or ball valve is ...
A. I. Breveleri's user avatar
7 votes
Accepted

Can a clear tube added on the outside of a water tank be used to read the water level?

There should be no fundamental problem with this, provided that the indicator tube is not closed at the top. You can either install a vented cap to keep debris out, or connect the top of the tube to ...
A. I. Breveleri's user avatar
6 votes
Accepted

How do I shut off hot and cold water in the house

Although there should be a shutoff under the kitchen sink and one at the hot water heater, turning off the cold water to the entire house will effectively shut off the hot water as well since the hot ...
user76730's user avatar
  • 1,616
6 votes

How to fix water leak coming from pressure gauge/valve on water tank?

The hole is to provide atmospheric pressure inside as a reference for the gauge. That is, the pressure indicated is relative to ambient pressure. Or, in other words, the gauge indicates how much ...
wallyk's user avatar
  • 12.3k
6 votes

What metal is most suitable for a ladder submerged in an underground water tank?

To add a bit to the question from Pavel in the comments of Ecnerwals answer: Stainless steel structures in swimming pools are known to be prone to SCC. The use of standard austenitic stainless steels ...
undefined's user avatar
  • 162
6 votes

Is it worthwhile to manage concrete cure process after mismanaging it?

When the contractor says "fill with water immediately" they probably mean "keep the concrete wet". They don't want the concrete to dry out. You could do that just with sprayers, ...
Harper - Reinstate Monica's user avatar
6 votes

Why do I have low water pressure at the house from a tank located 100 feet up?

If you have 100 feet of head, it is physically impossible not to have 50 PSI at the house when in-house flows are stopped. If the gauge is accurate, the 15 PSI reading tells you exactly where the top ...
Harper - Reinstate Monica's user avatar
5 votes

Why do the seismic straps need to go at least 4" above the controls on water heater?

So that the lower strap is not too close to any opening in the tank for the controls. The instructions are based on testing/experience with the location of sensors and their bosses to avoid breaking ...
Solar Mike's user avatar
  • 27.8k
5 votes

Adding salt pellets direct to home water tank

Will adding the Water Softener Salt Pellets to our tank actually help, and if so how much do we add? Would we just add it when we get the tank filled, or every day/week? Goodness, no. Water softener ...
MonkeyZeus's user avatar
  • 16.8k
4 votes
Accepted

What is this pipe beneath my tankless water heater?

That is what we call a "pop off", or pressure relief valve. If the water pressure gets too high, that valve will open and drain into your waste water system. Its there so your tank, or hot water ...
user70552's user avatar
4 votes
Accepted

Why won't my hot water tank heat in extremly cold weather?

Make sure you have adequate fresh air intake. There is typically a sensor on gas boilers, water heaters, and furnaces that will shut off the flame if it detects low pressure from blowing the exhaust ...
rtaft's user avatar
  • 928
4 votes

How to be able to empty completely a drinking water tank with an outlet not completely at the bottom?

Not quite enough information - tank material, flanged joints, etc? However, If at all possible, make another tap-hole right at the bottom, and use that. Or, cut a hole which did go level with the ...
Tim's user avatar
  • 5,298
4 votes

water tank drains water?

While it's not out of the question that "all is lost" with your current tank as the conclusion others leap to, it's really not the most likely situation. Temperature-Pressure Relief valves (...
Ecnerwal's user avatar
  • 221k
4 votes
Accepted

can a used tank water heater be reconditioned for safe usage?

Look at the anode rod, the condition of which would tell you a lot about how much of a problem rust is likely to be. Rust, and the ensuing leaks, is the big concern. If it's detieriorated but not gone,...
Ecnerwal's user avatar
  • 221k
3 votes

How to connect 2 water tanks at different levels with one pump?

The OP probably has long since satisfied his running water needs, but for anyone reading this later, here is a method to keep two tanks filled with the minimum of installed devices. The only active ...
A. I. Breveleri's user avatar
3 votes

What is this tank?

Looks like it's an old pressure tank. Link No idea why it would be sitting under your lawn, maybe the previous owners replaced it and decided to bury it if they had to pay to get rid of it. Even if ...
IronEagle's user avatar
  • 1,382
3 votes

Is it safe to set my water heater tank to vacation during winter time? What else can I turn off to save heating bills during winter?

First of all you should turn off the water to the house and water heater . I've had a burst pipe at my vacation home because the power failed, it got really cold and froze pipes. When the power came ...
George Anderson's user avatar
3 votes

Can we set up 2 water pumps such that they never run simultaneously?

There are something called "alternating relays" or "alternating switches", not to be confused with alternators for cars/trucks. The good thing is they aren't a "one off" ...
George Anderson's user avatar
3 votes

In what situations could "dirty water leak into" municipal water pipes besides a catastrophic loss of pressure?

It would depend on the pump and the municipal water line. It's certainly not inconceivable for a pump to pull suction on a low-pressure supply line. Also, in many cases the roof tank is also because ...
Ecnerwal's user avatar
  • 221k
3 votes
Accepted

Cooling water tank with no electricity

I think what you're missing is that circulation in this system is powered by convection. During the day, the heat exchanger does indeed heat up -- but since it's at the top of the system, that hot ...
keshlam's user avatar
  • 30.8k
3 votes

Simple sedimentation tanks setup for clean water supply at home

I wouldn't draw from the bottom of the first tank; that defeats the purpose by drawing the most sediment laden water. Seems to me you want both flowing upward. Ideally with some centrifugal separation ...
keshlam's user avatar
  • 30.8k
3 votes

Can you help explain the components of my water system?

The large tank buffers a relatively weak pump or an unreliable pump (wind driven, for instance) to still provide large flow rates until the tank's stored water is exhausted. With your well's flow rate,...
popham's user avatar
  • 10.5k
2 votes

Water pump and pipe size for maximum water intake?

To achieve the maximum flow keep your pump at ground level. With a 1/2" slightly pressurized intake it may help to put 3/4" out put to the water tank but much larger would probably be a waste of $. ...
Ed Beal's user avatar
  • 103k

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