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Steady water coming out of drain line

Constant water coming out of the drain line after the saftey relief valve. I already tried to flush the valve out of any debris as the manuel suggested. however the problem continues. my boiler is running at the suggested 12lbs of pressure and tops of about 140f. Under the max temp. Why the constant water discharge?

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  • Brent Coughlin Nov 02, 2012

    the problem is with the boiler unit not the waterheater as this site is suggesting

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  • Expert
  • 34 Answers

Bad safety shut off valve turn off the power and drain the heater and replace the valve

Posted on Nov 02, 2012

5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 37 Answers

SOURCE: boiler leak

Hi, it appears you have a defected relief valve. you can try one solution. lift the handle on the relief valve and let some water out. sometimes that can flush out materials thats blocking the stem in the valve. if it's still leaking it must be replace.

If this doesn’t work for you please write back. Thanks,

Posted on Nov 23, 2008

  • 686 Answers

SOURCE: Relief valve constantly releasing water.

lower your thermostats a bit. If your temperature is set to the hottest setting, then chances are no relief valve will do

Posted on Jan 08, 2009

co7196
  • 3433 Answers

SOURCE: Gas water heater is discharging out the pressure

The water heater is over heating the water, possibly boiling it and causing steam pressure build up. The thermostat is not sensing the temp to shut off the flame. It would be wise to either have a repairman come out or replace the heater. If pressure builds too high and the relief valve cand keep up ,theer could be a rupure of a water lineSoooooooooooo, turn the gas off and git er done.

Posted on Nov 09, 2009

pipesster
  • 20 Answers

SOURCE: Too much water draining from Vulcan Electric H/W relief valve.

Dear Julie. Do you have an expansion tank installed? If so it is probably waterlogged. If you come home shower etc. use lots hot water then go to bed or leave the cold water in your tank heats and expands as it heats. In the old days a toilet ballcock valve would relieve this pressure but modern toilets with diaphragm valves wont so the pt valve relieves pressure. Installing an expansion tank on the cold water line near the heater will absorb the extra water & stop the pt valve from activating.

Posted on Jan 25, 2010

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2 Answers

Rust in water heater tank


the tank needs flushed out ! heres how. Water heater manufacturers recommend flushing sediment from your storage type water heater periodically.
If your water heater is gas, set the gas valve to "Pilot" to prevent the burners from coming on while you are flushing it. If your heater is electric be sure to turn off the circuit breakers. With an electric water heater, if the water level drops below the heating elements and the thermostat turns the elements on, the heating elements will probably burn out quite rapidly. Connect a garden hose to the drain valve at the bottom of the tank, Close the shut off valve on the cold inlet to the water heater. open the temperature/pressure relief valve at the top of the tank by lifting the lever. Leave the valve open. Open the drain valve at the bottom of the heater allowing the water to flow out through the garden hose. when the water is clear your finished. close pressure relief valve on top of tank and turn water back on.
Open a hot water faucet in your house, and let it run until no air bubbles come out.

Turn the heater back on, and with gas units re-light the pilot light if necessary. good-day !

Apr 24, 2012 | Water Heaters

1 Answer

My pressure relief valve on my boiler is allowing water to pass through constantly.how do i adjust it to stop the water flow? only have about 15 pounds of pressure in system


Even a small amount of crud on the rubber washer/sealer can cause the valve to seep. Some valves can be taken apart and cleaned but it will be better to replace the valve. They can be found on line for around $12 or more. You will have to shut off the water in take valve and drain most of the system unless you have a main line shut off valve so the system wont drain back into the boiler. These valves are usually set at 30PSI.

Feb 21, 2011 | Watts Regulator Temperature and Pressure...

1 Answer

Pressure releif valve leaking


Hot water pressure relief valves serve two functions. The first is to remove high-pressure water from the hot water tank. The second function is to act as a high temperature valve to remove water that exceeds a predetermined point for the valve. Both of these relief settings are preset at the valve factory. Many pressure relief valves will come with a metal tag that identifies these release points. If you're attempting to remove the hot water heater pressure relief valve, pay careful attention to ensure that you replace with the correct valve.

Your hot water heater has a pressure relief valve safety mechanism. When pressure inside the water tank exceeds certain limitations, the valve opens up to allow the pressure to be released. A faulty pressure relief valve will not release excess pressure, which could cause extensive damage to your home. You should test the hot water heater pressure relief valve once every six months to ensure proper operation. If the pressure relief valve fails the test, replace the valve with a new one immediately

Locate the pressure relief valve on your hot water heater. The pressure relief valve has a lever handle on top with a drain pipe attached to it. The pressure relief valve is most often on the side of the water tank toward the top. Newer models of hot water heaters have the pressure relief valve on top of the water tank.

  • Inspect the area around the pressure relief valve for signs of leaking water. If there is leaking water near the relief valve connection, replace the relief valve. If no leaking is evident, proceed with testing the pressure valve.

  • 3

    Examine the area below the pressure relief valve drain pipe. Most water heater closets either have a drain in the floor below the pipe or the pipe is inserted into another pipe to direct the water out of the home. If the end of your drain pipe is not in another pipe or there is no drain in the floor, place a bucket under the drain pipe to catch water when you test the pressure relief valve.

  • 4

    Pull the lever handle on the top of the pressure relief valve up with your fingers. A working lever will lift up without difficulty.You should begin to hear water going through the drain pipe. Slowly release the lever to shut off the pressure relief valve. The pressure relief valve is good. If you did not hear water running through the drain pipe, lower the lever on the pressure relief valve and replace the valve. If the lever is difficult to raise, do not force the lever. Replace the pressure relief valve.


  • Now with all that said if you have a closed loop water supply system and you have a pressure vessal/expantion tank it may have gone bad and is making the TP valve leak. you can call your water provider to see if you have closed loop system.

    Feb 04, 2011 | Whirlpool Water Heaters

    1 Answer

    My Atwood 6 gal. water heaters pressure relief valve starts dripping shortly after (8 or 10 min.) heat is called for, and dripping gets stronger until a full flow. I have checked all four hi-limits and...


    If the water seems hotter than normal, then a faulty thermostat would be a good bet.
    If water doesn't seem any hotter than normal, then check incoming water pressure.
    usually 2 things cause that, too much pressure coming in, or thermostat faulty and not cutting out when normal temperature reached, thus higher temperature, and pressure. If both them check out, replace valve.

    Oct 30, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

    1 Answer

    The water pipes that carry the water throughout the house makes a loud humming noise every three seconds


    Hi, it says you are having problems with the relief valve, I am not sure what it is, but they will blow water if the water temperature exceeds its rating and water pressure. Also, says you have a humming every 3 seconds or so in the pipes? This sounds like a classic case of hard water deposits have formed up around the control valve probe that's inserted into the water. Also if the pipes are galvanized and not copper, they will rust up the walls of the pipes over time with deposits also closing of the amount of room for the water to get through. It would really help to know the age of your home and if the water heater is gas or electric? When this happens, you will hear a popping noise at the water heater and you will get air in the pipes that will cause all sorts of noise, humming, growling, the pipes will rattle and with the restricted lines and build up of sediment, the pressure relief valve will let loose to relieve the pressure. If you are having any signs of low and uneven pressures and hot and cold problems, depending on the age of this water heater, you will need to replace it.If it is a gas heater, you will have a round plastic drain knob located at the bottom of the heater. You can turn it ccw all the way open and let the water coming into it from the fill valve on top flush out as much of the sediment as you can. When you have done this, close the valve off to fill it up again and repeat the draining or flushing process. This will also remove any air trapped in the lines. Important! When you are filling the heater if you had shut the fill valve off on top, open the water valve and on the relief valve, pull the lever up to lock it open as this lets all air from the lines out of the heater and the water pipes. If this relief valve is blowing a lot, replace it. Just turn the water valve off on top and use a pipe wrench to turn it ccw to remove it. Look for sediment on the rod to see how much has build up on it. This valve is around $25 and will be cheaper to replace then the heater. The size is 3/4". Temperature range for it to open will be stamped on the old valve. This you can get at any hardware store such as Home Depot, Lowe's, Ace and so on. Pick up a small tub of pipe dope to coat the treads when installing and once it is in, turn water on and raise the lever up as you turn water back on to fill the tank to remove the air. This should solve this problem. Please keep me posted on this and your progress and if you will tell me the age of your home and if its a gas or electric heater this will be helpful if the instructions I have given you do not solve this problem. I do believe it is just trapped air and a faulty pressure relief valve at this point. Please don't forget to rate me as I know you will be kind and please keep me posted as I will check on you as I store your information in my files to look in on at any time I may need.
    Sincerely,
    Shastalaker7

    Aug 30, 2010 | Rheem Water Heater Pressure Relief Valve

    1 Answer

    MY GE PRESSURE RELIEF VALVE HAS JUST STARTED LEAKING. WHAT SHOULD I DO ? GE SMART WATER HEATER GELN0705CO3984


    Hello,
    You can buy a replacement relief valve at any hardware or home improvement store. It's real name is a T&P valve or temperature and pressure relief valve. It always has a 3/4" inlet and outlet. It is a very easy procedure to replace. You will need a bucket, teflon pipe thread tape, and a 3/4" x 6" black iron or galvanized pipe nipple. To start the valve replacement, turn off the shuttoff valve on the cold water line. Then open the handle on the relief valve and drain water into the bucket, that is, unless you have a pvc pipe coming off of it into a drain floor, then just drain it without the bucket. Be careful, the water is hot! When the water level gets below the relief valve, it will stop draining. Then remove the pvc pipe, if applicable, and thread in the 6" pipe nipple to use as a leverage tool to remove the valve from the water tank. Turn it counter clockwise to remove. Then put teflon tape on the new valve, going from left to right with the valve threads facing downward. Wrap about 3-4 layers all around the threads. Then twist the new valve into the water tank clockwise and using the pipe nipple tighten by hand until very snug and outlet is facing downward, as before. Remove the pipe nipple and install pvc pipe, if applicable. Leave valve handle open and turn on the cold water until the valve starts spitting, then close the relief valve and let it fill up the tank. If you did it correctly, you are now finished! Good luck!
    Douglas

    Jun 14, 2010 | Water Heaters

    1 Answer

    We have a fast drip coming from the drain, what does that mean?


    The pressure relief valve is going bad causing water to run out of drain line. They are easy to replace and they are a standard 3/4' threads. Turn power off and drain water down till no water comes out of drain if you lift the lever on the relief valve.
    Lowes or Home Depot will carry a replacement for this heater. The T & P valve is a safety feature that will open if the pressue get's to high due to high heat in heater. With this you would get a blast of hot water running out.
    T & P valve start to go bad they start dripping and evenually can not hold water back. This is a early sign for you to replace before it goes to running out.

    Jun 02, 2010 | Rheem 40 Gallon FVR NATGAS Low WATER...

    1 Answer

    Flooded bathroom from top of unit


    The T&P valve (temperature and pressure) relief valve is suppose to have a 3/4 in drain line threaded into it .This line should have ran to a trapped drain or possibly to the outside of the house. A water heater cannot over fill. To drain your water heater run a garden hose to the outside or to the lowest drain you have nearby.If its still wet be carfull not to get shocked,Attach the garden hose to the drain valve located towards the bottom of the water heater. turn the valve on. If water dosnt come out of the other end of the hose,youll have to see if you can run a peice of wire through the valve into the water heater to get it to drain. This can somtimes be a real problem . I usually leave the water on when i first connect the hose to the drain valve. This allows the water pressure to flush the sedament out of the bottom of the water heater.

    Dec 04, 2009 | Water Heaters

    1 Answer

    Relief valve constantly releasing water.


    lower your thermostats a bit. If your temperature is set to the hottest setting, then chances are no relief valve will do

    Jan 08, 2009 | Rheem 50 Gallon FVR NATGAS Water Heater...

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