Questions tagged [water-pressure]

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Advice on installing a pressure reducing valve

Recently our water pipes started vibrating quite noticeably under high flow conditions--you can hear where the water enters the house from at least 20' away and the vibration is very obvious if you ...
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5 answers
37 views

What kind of water pump should I use to supply a tankless water heater from a non-pressurized water source?

I have a tankless water heater similar to this one, which I'd like to setup at a campsite where I'll have water but not from a pressurized source (e.g. a bucket of filtered river water). The heater I ...
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2 answers
80 views

Water pressure drops in house when 2 faucets are one at the same time

I bought a house 2 years ago that was built in 1958. Had galvanized plumbing when I moved in and it was almost completely sealed off with rust. I had all the plumbing from the main line replaced a ...
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1 vote
1 answer
96 views

well working without pump?

I recently bought a new house, and it has some out buildings with some hose bibs coming out of the ground. There are no city water lines in this area so it must be from some well. I've looked around a ...
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1 answer
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Increase Water Pressure To One Shower

I have a two story home built in the 70's. Water pressure is excellent everywhere in my house except one shower. I've tried replacing the shower head removing the shower head, and letting the ...
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2 votes
2 answers
86 views

What could cause pulsating water pressure inside house?

My house has a city water supply. The water pressure is at 60psi. Whenever a faucet is turned on (hot or cold) or a toiler flushed the water pressure pulsates as seen in this video and all the pipes ...
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32 views

Sump pump knocking after water flow if sent out

Our sump pump knocks rapidly, loud, and for 10-15 seconds each time water is ejected/discharged. -water flows freely out the exit pipe -i plan on changing the check valve today 3/23/22
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1 answer
99 views

Preventing the pump from sucking air when the tank is empty

I have a pump connected to a water tank. The city water fills the tank through a (mechanical) float valve (to prevent overfill). And the pump's inlet is connected to both the tank's outlet, and also ...
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2 votes
3 answers
166 views

How can I stop pipes from vibrating / rattling / hammering after a new pressure valve was installed?

I tested the water pressure last month and it came up at 89psi. My old pressure regulating valve said it would only go to 75psi and turning the bolt didn't change the pressure, so I assumed it was ...
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6 votes
8 answers
3k views

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

This cold fill is in the closed position but the water still runs. If my house has a stop tap, I can't find it (spent half a day looking, not mentioned in papers when I bought the house either). I ...
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1 vote
0 answers
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Should I expect the same or lower water pressure when increasing pipe size for a shower?

I'm remodeling my shower with 2 body sprays, a hand held sprayer and maintaining the standard shower head. Currently I have 1/2" pipes and the new fixtures require 3/4" pipes. Should I ...
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-1 votes
1 answer
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Is it possible to plumb an appliance with a reservoir directly to a filtered water supply?

I have a Ninja CP307 coffee maker. It's great, but I hate having to fill it up with filtered water every day. It sits next to my fridge which I plumbed up to my reverse osmosis water system. I assume ...
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0 votes
1 answer
73 views

Why is my water pressure high after using water and how do I fix it

When we use water in our house like the shower, dishwasher, washing machine, the next time we use the water the pressure is very high for a few seconds. It is causing my hot water tanks pop off valve ...
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1 vote
2 answers
162 views

Is it possible to calculate water pressure by measuring the time it takes to fill a bucket with water?

We suspect that there is too much pressure in the water system of a friend's house. I checked the pressure regulator, the pressure gauge shows more than 4 bar (which AFAIK is way too much). However, ...
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0 answers
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Why is there intermittent air in my shallow well house water?

In the last few months I starting having air coming into the faucets of the house and low pressure. Through process of elimination I determined it was the water softener. I did a manual flush and ...
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25 views

Tank pressure drops as water spigot runs, then pump shuts off

I have a well with a water hose spigot mounted between the well and pressure tank. When I run the hose the pressure drops and the pump comes on correctly. But, the pressure in the tank never builds ...
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2 votes
1 answer
84 views

Is there a height requirement for hot/cold washing machine supplies

Is there a minimum height requirement for the hot/cold water supplies for my washing machine? I know there are strict requirements for the drainage (i.e: the standpipe) but I could not find anything ...
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0 votes
1 answer
98 views

Why are my heat radiators only partially heated?

We moved in to a house around 6 months ago. I noticed that our radiators were not getting too hot so went ahead and bled them. I managed to eventually get water out of most of them however a couple of ...
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0 votes
2 answers
125 views

How can I stop a leak in a shower valve?

My shower valve leaks. It started leaking a couple of weeks ago and I replaced the cartridge. I had to re-use some of the old parts because the new ones wouldn't fit. The valve stopped leaking for a ...
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0 votes
2 answers
93 views

Can (inside) dripping faucet help prevent (outside) hose bib from freezing up

If I had left my (inside bath room sink) dripping could it had prevented my (outside hose bib) 20 ft away & on same side of house from freezing up & busting. I know freezing water expands and ...
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-1 votes
1 answer
42 views

Replaced Tub Spout, now water pressure in the shower is weaker than before. Is there a water leak?

I hired a handyman to replace my Tub Spout with this one here: https://www.homedepot.com/p/DANCO-5-1-2-in-Decorative-Tub-Spout-in-Brushed-Nickel-10316/202562828#product-overview. Now the water ...
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0 votes
0 answers
36 views

Trouble with water and electric hot water heater

So our cold water has low pressure and we've had water problems for over a year now, not sure if that matters. But I was doing the dishes and the hot water started to get cold but i figured someone ...
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0 votes
1 answer
66 views

Pump takes a long time to kick in

I am having an issue that only happens on occasion. I haven’t been able to reproduce it at will yet. However, when it happens I get into a scenario where my pressure gauge will read 10 psi or so and ...
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3 votes
1 answer
216 views

combining water pressure regulators to achieve a higher pressure

Can I combine two or more pressure regulators to achieve a higher pressure than their rated value? That is, in the following diagram would the output be 100 psi? I assume that I would need check ...
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-1 votes
1 answer
57 views

Why is my water pressure low after new system installed?

Well pump, bladder tank, and pressure switch all installed in the summer. Switch is set to 30/50 but keeps falling to low20s/50 psi. The bladder tank is not leaking, 28psi when emptied. Also ...
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3 votes
1 answer
207 views

What is the best layout of s240u solar panels to heat a pool with limited width?

I have 6 SunHeater S120U panels as suggested for my pool size according to the Installation and Operation Manual using a ground install. However, I am limited to 10 feet of width, which with ...
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0 votes
0 answers
23 views

Periferic or pressurizing pump to pull water up to a higher place?

I live up a hill where the water doesn't always reach my tank. The pipe runs up a gentle slope and halfway it doesn't have enough pressure to reach us. Searching for a solution I seem to have two ...
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1 vote
1 answer
124 views

Why do washing machines require high pressure to operate?

Edited: From most sources on the internet I see that washing machines require valves require atleast 20psi to open. Why do washing machines require more anymore pressure than would be required to wash ...
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0 votes
0 answers
28 views

Booster Water Pump for Intermittent (Input) Supply)

We live in Mexico in a small village which has an intermittent water supply. Our small neighborhood is on a hill, which means that when the water comes on at the street, the water tanks of the lowest ...
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0 votes
1 answer
69 views

Reducing swimming pool pump output from 1.5 to 1 inch

I have a swimming pool with around 60000 liters, it uses an electric 3/4 HP pump to circulate, sweep and drain the pool. The pump is located on an underground cubicle, almost at the floor level of the ...
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1 vote
1 answer
79 views

High water pressure on middle setting on faucet

I’m in a newly renovated apartment with brand new faucets. The faucets in both bathrooms (different models) both have a super high pressure, so much so that it makes a mess when you turn them on from ...
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0 votes
2 answers
56 views

I am trying to measure fullness of a water tank due to hydrostatic pressure. Can I eliminate the effect of subsequent tap on pressure?

I have a water tank around 16m vertically above my basement. It is 2m high so there is minimum 16m, maximum 18m. Therefore I want to turn my pump on at say 17.2m of pressure, off at say 17.8m. As per ...
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0 votes
0 answers
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Should expansion tank be fully drained as part of routine maintenance?

Simple question: Should an expansion tank be fully drained as part of routine maintenance? Can there be any downside to bleeding it out completely?
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0 votes
1 answer
38 views

Physics of reducing water pressure using reducing pressure valve

I watched this video how to adjust downstream pressure. While it is clear to me how increasing it would work, by simply letting more water in from upstream, I am confused where the existing pressure ...
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  • 6,441
0 votes
1 answer
50 views

Recommended pressure in hydronic radiator closed circuit

What is the recommended pressure in a hydronic radiator closed circuit? By "closed" I mean there is a valve to fill it and then it can be closed, after which the circuit is not connected to ...
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  • 6,441
0 votes
1 answer
37 views

Order of reducing and relief valves in pressure reduced system

Does the order, relative to the direction of the water flow, of reducing and relief valves matter in a pressure reduced subsystem (hydronic boiler in this case)? In other words, does it matter if the ...
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  • 6,441
8 votes
4 answers
1k views

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

A couple months ago I noticed our water pressure get weaker when we used more than one appliance in the home. Today I picked up a replacement PRV but when I went to change them out I noticed that the ...
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1 vote
0 answers
79 views

What is round box near water meter

What is round box near my water meter? I'm trying to increase the water pressure to my house, which was built in 2019. I know that the water pressure is lowered to my house and sometimes there's a ...
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0 votes
1 answer
103 views

Kitchen faucet occasionally doesn't allow water to flow

My faucet in the kitchen works 99% of the time but occasionally when you turn it on 0 water comes out. When this occurs the water still works in the bathroom, and in other apartments. (I’m the middle ...
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0 votes
2 answers
44 views

Is it weird for have a pressure regulator fail after 5 months? [closed]

We've been in our house about 5 years. 5 months ago we had knocking/whistling issues. We called someone and the plumber replaced our pressure regulator (not sure how old it was). Over the last 2 ...
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1 vote
1 answer
73 views

Copper pipes making knocking sound when I turn the water off

I did bathroom reno and replaced bathtub and shower faucets locations and extended copper pipes a little. That's not the first time I weld copper pipes and I didn't have any problems in past. What I ...
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-1 votes
1 answer
65 views

How should I Install a pressure reducing valve

I am installing a water pressure reducing valve right after water meter: Should I install a back flow prevention unit as well, & where? Should I also install a bypass line in parallel to switch ...
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1 vote
0 answers
41 views

What is causing my tap (faucet) to not work properly?

Background My flat is on the 3rd floor of a converted Victorian building and the mains water pipe to my flat has a booster pump installed on the ground floor to improve water pressure. Whenever any ...
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  • 111
1 vote
4 answers
405 views

Hose splitter leading to low pressure

I recently added a garden hose splitter to my bib in my garage and outside, to be able to use 2 hoses at the same time from the same bib. I would sometimes need to run both my garage bib and outside ...
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0 votes
1 answer
52 views

Can I use a .006" (.15mm) orifice mist nozzle on a mid-pressure patio misting system?

Specifically, the pressure is around 200 PSI. I get the impression from what I have Googled that .006 and below may only work for high-pressure systems.
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0 votes
1 answer
52 views

Replacing a water pressure regulator valve that's not screwed in

My pressure regulator valve (PRV) is bad and I need to replace it. After removing the insulation around it, it looks like the union fittings aren't actually screwed into the PRV. It doesn't leak or ...
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0 votes
0 answers
41 views

Draining water in the house

I have a two story house plus a basement. It's an older house and the water pressure isn't that great. I've seen a little crud on one of the screens on a sprinkler timer that's hooked up to a spigot ...
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  • 165
1 vote
1 answer
78 views

When turning the main water off for extended absence, should the system be kept pressurized?

It seems to be the general recommendation to turn off the main water supply when you're away from the house for longer (some even recommend it for overnight absences). My question is: Should the water ...
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  • 216
1 vote
3 answers
215 views

is my well pressure tank waterlogged?

Is my well pressure tank permanently waterlogged, do you think? I have a private well that's about 100 ft deep. I have an old WellMate WM-25WB pressure tank. It's fed by an old Myers ¾ HP submersible ...
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  • 105
1 vote
1 answer
97 views

Do I need to dig another well or give up an connect to city water?

My water all a sudden stopped working so I replaced the well pump. Even after buying a new well pump I still didn't have any water. I called out a plumber he said I would need a repipe and we would ...
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