Questions tagged [valve]

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24 views

One of multiple zones calls for heat, but all return lines get hot

We just installed new gas combi boiler (Lochinvar NKC199N), it is working but there is one issue that I don't quite understand. We have 4 zones (4 different circulation pumps, 4 thermostats), when ...
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1answer
51 views

What size and kind of check valve do I need?

I was told that I need a check valve for my washing machine hookup under the sink. I understand that the check valve makes sure the water only flows in one direction. I don't understand what kind of ...
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51 views

What is the most common bathroom sink shut off valve size outlet being used these days?

Helping a friend out with replacing some 30 year old shut off valves that are locked up, but he doesn't want to replace his faucets just yet. He's thinking about a major remodel in a few years. The ...
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1answer
52 views

Was it okay to replace only the turny-part of the faucet supply valve?

I have old galvanized pipes and old supply valves under my sink. I needed to shut them off and turn them back on, and they started leaking, as they do. I went to the store and bought replacement ...
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1answer
104 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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2answers
54 views

Cannot find correct stop valve size for toilet

The stop valve to my cousin's toilet needs to be replaced. It is a male threaded to the wall and 3/8 to supply line. I took it out and took it to Home Depot to get a new one and they said they didn't ...
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1answer
70 views

Should I replace my mains stopcock

At the moment, my mains water supply to connected to a very old supply that comes in under the back garden and in through the back of the house. I have not found an shut off value in the garden. I ...
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3answers
2k views

Installer won't install dishwasher due to "old" stop valve

We just ordered a new Bosch dishwasher from Home Depot, including third-party installation. The installer they sent looked under the sink and said that because our stop valve is too old, that he ...
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50 views

Is this the main water shutoff valve?

I was looking around for my main water shutoff valve, and I found this hole in the ground (about 2.5' deep and 4" dia.) with a pipe coming out of it. The pipe was uncovered - I vacuumed about 5 ...
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2answers
88 views

Should I use an impact wrench to loosen a plumbing nut on a boiler drain valve?

I want to replace the washer inside a boiler drain valve because it's leaking. However, I am unable to unscrew a nut that holds the valve stem in place. I have tried a variety of hand tools, so far ...
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1answer
36 views

Shut off valve options for bathroom sink?

I need to do some work under my bathroom sink. While there, I am thinking of replacing the old hot and cold water shutoff valves. (See photo.) What is there does not seem very high quality. Are ...
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1answer
56 views

ON and OFF for square-head gas valve

The picture shows the in-house gas valve for my outdoor grill. I want to make sure it is off as I never use it after purchasing the house. It has a square head and there is a nut on the other side.  ...
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2answers
58 views

Ancient shower handle replacement

I need to change my shower handle stems since they are semi-broken. The handles do not include any signs or logos for who the manufacturer is. Any ideas how i can find out or even find a similar ...
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2answers
426 views

Foot valve leaking? Other solutions to priming pump

I have around 4.5 metres of lift and 20 metres or more of PVC pipe from the river to my pump. This is therefore not self-priming. I have a brass foot valve (check valve with debris screen) on the end ...
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2answers
131 views

Why does the water from my shower get hotter when I use a shut-off valve?

The water temperature in my shower is hard to control, so I bought a shower shut-off valve hoping to be able to conserve water by setting the temperature at the beginning of my shower and to ...
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1answer
76 views

Is it possible certain outside faucets/bibbs are not controlled by a main shut off?

We have 2 outdoor faucets that are not connected to our main shut off. I have to call the city to come and turn it off the water in order to do some work on those specific faucets every single time. I ...
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2answers
70 views

How to winterize pipe to outdoor hose bib if the valve is lower than the outdoor bib

I've recently bought a house and am not able to contact the previous owner. I'm trying to winterize the house for the upcoming winter in New Jersey. I have an outdoor hose bib but the only valve I can ...
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1answer
35 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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1answer
70 views

How to fix a slow drip in this exterior faucet?

Now that I've disconnected my hose for the winter, I can see that the exterior faucet/valve on the house I just moved in to has a slow drip (drips once every several seconds). I worry about the water ...
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1answer
32 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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4answers
2k views

How can I seal the gap around a valve handle in drywall?

I have a valve under my kitchen sink that controls the water at my outdoor spigot, and I was unable during a kitchen remodel to fully seal this area leaving an opening in the drywall around the valve. ...
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1answer
80 views

New toilet fill valve's plastic back nut not compressing rubber sealing washer enough to seal cistern inlet hole

My cistern inlet hole was seeping. I bought a new fill valve, removed the old fill valve, removed the sealant applied to cistern inlet hole, and installed the new fill valve. What doesn't work ...
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4answers
980 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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2answers
48 views

Soldering lead-free quarter-turn forged brass ball valves

Do lead-free forged-brass quarter-turn ball valves need to be disassembled before soldering? Anything inside that can be harmed by the heat of the torch?
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5answers
685 views

How do I remove this hot water valve?

I am trying to replace the faucet and valves in my bathroom sink, but I can't figure out how to remove the old valves. This is what the valve looks like above the sink. This is what the valve looks ...
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4answers
4k views

Why does it appear that my system is designed to PREVENT me from connecting the washing machine to mains water?

My plumber, who is really into his engineering has installed brand new plumbing in my kitchen. The endpoint valves for washing machine and dishwasher are "non return" valves. Both of these ...
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2answers
30 views

Help identifying shower valve in older home

We've run into a shower valve we can't identify. Does anyone have any idea what this is or who made it? The house was built in the 60's and we aren't sure that this is original, but it could be. There ...
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0answers
71 views

What is the life expectancy of an earthquake safety valve?

There are many sites that recommend an earthquake safety valve to be installed on a gas line but they also sell service of installing so seems like they are just selling their service. Considering ...
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1answer
55 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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1answer
65 views

Outdoor Water Spigot Will Not Turn

I'm having an annoying issue with an outside water spigot. I was watering the yard the other day and kinked the hose so I could put on an attachment. Finished watering and when I went to turn off ...
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1answer
44 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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1answer
45 views

Replace Unloader Line on Air Compressor

I am trying to replace a broken unloader line on an air compressor I received from a family friend. After pulling off the cover it looks like a mouse may have chewed through the teflon line. I have ...
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0answers
29 views

Shower valve issue?

Is this a problem (see picture)? I’ve had hot water issues in the house since this was installed and am feeling as though the valve is mixing and sending hot water into the cold pipe but I don’t know ...
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0answers
51 views

My two port valves let water through when closed

I have underfloor heating and the two port valves are letting water flow through even when in the off position. Recently the plumber has changed them three times and at one stage fitted both a two ...
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1answer
41 views

Sizing sprinkler zones for water well pump

I live in central Oklahoma and we bought a 40 year old house which depends on well water. In 2017 the pump was serviced and a new pressure tank, pump controller, and pressure switch were installed. In ...
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2answers
66 views

Quarter turn valve only moves when nothing connected

I'm trying to connect a new dishwasher in a house we just moved into. The problem I'm having is that the quarter turn valve that was already in place on the pipe that was already there for the ...
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0answers
34 views

Connect air conditioner to poppet valve

I am about to make a purchase for an air conditioner and I am consindering to connect the output to the existing exhaust air poppet/disk valve in my kitchen instead of using a window. My question is: ...
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2answers
57 views

How to fix this valve?

This valve below is slowly leaking. I am not what kind of valve it is. This is between main riser of the apartment building and helps stop water for my apartment. Any body have a clue about it? And ...
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0answers
45 views

Does a diverter valve based on temperature exist?

I want to install a solar water heater in my house in the future, so I've been thinking about how I could do it, something like this: Cold water enters the solar heater, hot water comes out. If it's ...
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1answer
19 views

How do I set the Rain Bird ST-8 2.0 to work with an indexing valve

Equipment: Timer: Rain Bird ST-8 2.0 Indexing Valve: K Rain 4000 4 zone I recently had a new irrigation timer installed, the unit I purchased required the use of a pump relay due to the voltage ...
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1answer
45 views

How can I lower the water intake on my booster pump from the main water pump?

I have a 25 foot shallow well for water sprinkler with 2 horse power barracuda pump. Low pressure so added 3/4 hp barracuda booster pump. Booster is dry running for lack of water from main pump. How ...
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2answers
93 views

Irrigation Zone Off When Should Be On, On When Should Be Off

I have been replacing irrigation lines, switching from buried black poly lines to buried PVC pipes. Summary When I open Zone 1 (for sprinklers), the nothing happens. When I open Zones 2-5, then Zone 1 ...
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0answers
23 views

Shut off valve still leaking after being replaced

I just replaced the entire shut off valve for my toilet and its still leaking. I used all new parts. Would could be the issue?
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1answer
121 views

Does a copper pipe need to be perfectly smooth to install a compression valve?

I had to remove the compression valve for the toilet during my bathroom floor install. When I started out I did not know how compression valves worked and ended up putting a lot of power into ...
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1answer
65 views

How to replace soldered valve with push in connect?

Attached diagram is for my main water shut off valve in my 2nd floor condominium. Existing valve is gate valve which has stopped working. I am no longer able to shut off water supply. Copper pipe is ...
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0answers
36 views

Yellowish residue from within water pipe

I was changing a valve today and used tissue to wipe water off the threads. While doing that, I also wiped the inside of the old pipe a bit through the opening, and I got yellow residue on the tissue (...
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0answers
66 views

Is it safe to pull up copper pipe?

We have a copper pipe coming up from the floor in our bathroom that likely needs to be cut due to some distortion where the compression valve used to be that is preventing a clean seal. After cutting, ...
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2answers
54 views

Switch from electric range to gas range [closed]

I’m think about buying a gas range and not sure if my kitchen is setup for it for or not.
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1answer
31 views

compression washer tap valve too big?

This is an odd one! I have a bathroom sink where the hot tap has a compression valve. I can easily loosen the valve but I cannot then remove it from the tap! It seems that the far end of the ...
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0answers
60 views

Sink faucet only flows when barely open

I closed the hot water valve under my bathroom sink and reopened it last night, and since then I'm seeing a strange problem. If I barely turn on the faucet on hot I get water flow, but if I open the ...

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