23 votes

Any special precautions when turning off water to a property?

In addition to what FreeMan stated, if you have an electric water heater you want to turn off the breaker that feeds it. Depending on your plumbing, turning on some hot water faucets to finish some ...
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  • 53.2k
17 votes
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How can I stop water flow in a pipe if the valve isn't working?

If you remove the blue handle, then there should be a shaft with two flats or a square end. Turn that with a suitable spanner or adjustable. Some will suggest pliers but then you can end up rounding ...
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  • 20.6k
14 votes

Any special precautions when turning off water to a property?

I've turned the water off at the meter for our house more than once - I even bought my own "curb key" to do it. We've had a small variety of leaks and issues requiring this. The water ...
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  • 29.1k
13 votes

Corroded Water Shut Off Bolt/Lever - Is this okay for now?

That's a ball valve and they are pretty good valves. At this point, I'd just wire brush all the rust off and clean up the valve. Then test the valve to make sure it operates smoothly and totally turns ...
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  • 53.2k
11 votes
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Why did city utility work require me to modify my faucet aerator?

The most likely scenario is that the work on the system disturbed sediment/debris that migrated to your home water piping, plugging up your faucet aerators. Rather than the "quarter turn" you describe ...
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  • 33.4k
8 votes
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Is it possible to control water pressure using a ball valve?

To answer your question; A ball valve only controls flow not pressure. A few seconds after water is flowing a ball valve will limit the pressure based on the flow. A pressure regulator requires no ...
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  • 95.5k
8 votes

Can I replace a shower cartridge with the water on by forcing it against the water pressure?

If you had an old faucet with just a valve stem and flat washer, possibly. You could open the old valve and the new valve stem and remove the old one. The water would gush out but when you inserted ...
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  • 53.2k
8 votes

How can I stop water flow in a pipe if the valve isn't working?

From the pictures, that looks like UK plumbing, i'm going to assume that it is indeed UK plumbing. First off as solar mike says it may just be the handle that is broken, try removing the handle and ...
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  • 4,189
7 votes
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Water pressure in upstairs sink lost after turning off main line to fix shower

When you shut off your main (or any valve really but the main is the big one) and turn it back on you can cause debris or sediment that was trapped somewhere in your plumbing to dislodge. It seems ...
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7 votes
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Can I connect two soaker hoses with a normal garden hose in between?

I have something like this and it works just fine. (I have only one soaker hose in each bed, and both soakers are the same size.) The flow rate involved is very slow, so the hose and connector sizes ...
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6 votes
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How can I get my shower head to increase water pressure?

First as Henry Jackson mentions the low flow shower heads are part of the the water consumption laws passed in the US. I am not sure how the US compares to other countries. I have done construction ...
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  • 46.2k
6 votes

Corroded Water Shut Off Bolt/Lever - Is this okay for now?

The trace of white corrosion product indicates no problem at all with the valve. The zinc coating ( or less likely cadmium ) has apparently been wet, likely from condensation of humidity, and corroded....
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  • 7,648
6 votes
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combining water pressure regulators to achieve a higher pressure

The pressure at the regulated side will be 50psi. Shunting several regulators can help regulate the pressure under high flow when there would be too much pressure drop through one regulator's orifice ...
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5 votes
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How to bypass a clogged water softener?

B2 is a bypass valve. B1 and B3 are so you can remove the water softener to replace it and still have water pressure in the house. B2 (only) or B1, B3 (only) should be open at any one time. "All the ...
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  • 132k
5 votes
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Can I use a gauge designed for measuring air pressure to measure water pressure?

Pressure gauges commonly use a Bourdon tube. Bourdon tubes are a coiled metal tube and as the pressure increases, it forces the coil straight which then moves the needle. (think blowing a party horn,...
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  • 4,356
5 votes
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Why are many shower hoses "explosion proof"?

I suspect you're seeing the result of poorly-translated product descriptions from China and elsewhere. For example: Advantages: Withdrawing life greatly improved. Should not damage the leaking. The ...
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  • 104k
5 votes

How do I use this valve properly?

It's called a pressure reducing valve (PRV) That's a PRV with a shut off and set point. The knob on the bottom is the shut off and the bigger knob with the screw is the set point. Now that you've ...
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  • 6,098
5 votes
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anatomy of Kohler handheld showerhead - flow restrictor

I have a Kohler shower head. Different model but the flow restrictor assembly is likely the same. There's actually a series of parts behind the steel retention ring in your photo. The yellow that ...
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5 votes

How can I use drain motor as aquarium motor?

Pumps function by providing sufficient pressure to overcome what's called the "static head" at a desired rate of flow. Static head is the weight of the water in the height of the pipe as it rises ...
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  • 14.4k
5 votes
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How does cold water pressure get used by a hot water heater to produce hot water pressure?

The "overflow pipe" in the diagram is not an overflow pipe. The water heater is fitted with a relief valve which remains closed against the usual water pressure in your plumbing, but which will pop ...
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5 votes
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Why is my Water Heater Leaking only when I open the Pressure valve?

Check the age of the tank. The lining is most likely leaking. The pressure vent doing what it is suppose to do, When you manual release the pressure through that valve, water is allowed to escape. ...
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  • 2,683
4 votes

How can I increase water pressure after installing dual-head shower?

This depends on what your current plumbing system looks like. If you have 3/4 inch copper coming into your house and 3/4" copper into the shower valve then yes you would have to upgrade your whole ...
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  • 46.2k
4 votes

How can I increase water pressure after installing dual-head shower?

You would need to increase the pipe size from the water supply (hot and cold) to the shower in question. A potential alternate solution/issue may be that some (most?) of the "gate" or "diverter" ...
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  • 132k
4 votes

Should a water distribution manifold consist of a circular loop?

A circular manifold is not a hot water recirculating loop, though a hot water recirculating loop could conceivably be set up as a sort of large ring manifold. It is simply a manifold arranged as a ...
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  • 132k
4 votes

Do I need to replace this water pressure valve?

The first thing you should do it check your static (no flow) water pressure and the pressure with water flowing. Find a place where you can attach a pressure gauge and check the pressure with and ...
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  • 33.4k
4 votes

Will installing a 2inch fitting in a 3 inch water line decrease water pressure?

Reducing the pipe diameter from 3" to 2" will not decrease the static pressure in the down stream pipes if all valves are closed and no water is flowing. The restriction to 2" will cause a decrease ...
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  • 61.1k
4 votes

What could have caused the hot and cold water to stop running in one sink, while all others are fine?

OK...I'm embarrassed. I know I said it wasn't the filter, because every three months I take of the filters and clean them with vinegar. I went ahead and took out the aerator assembly, and there was ...
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4 votes

Is there any benefit to upsizing to 3/4" pipe off a 1/2" main supply?

Flow resistance, like electrical resistance, increases with conductor length. If you are going a long way (say, over 50 meters) you will get better flow by running a larger pipe. The volume is a non-...
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  • 1,100
4 votes

Pressure problems with oil boiler

Your diagnostics so far point to the indirect hot water heater coil leaking potable water into the furnace loop as the most likely issue. You could perhaps verify if you can shut your hot water down ...
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  • 132k
4 votes

How do I find out the correct pre-charge air pressure for my captive air water tank?

Pressure Switch I've never seen a "safety cut-off" on a pressure system before, but typically the switching is done by a single box (known as a "pressure switch"). Pretty much all of them (at least ...
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