If your water heater pressure relief valve hasn’t opened in a few years, a slight leak may spring after you finally open it. This leak usually isn’t anything severe ‒ a minor drip is the most it will likely become. If the leak does become more serious, you’ll have to replace the whole valve. Unfortunately, the damage … See moreFeb 29, 2024 · This buildup can affect the pressure relief valve. It may cause the valve to get stuck open or not close properly, leading to continuous leak. Corrosion Inside the Tank: The inside of a water heater tank is metal, which will corrode over time. Corrosion can weaken the tank and its components, including areas near the pressure relief valve. <. In pressure relief valves for water heaters, the valve is programmed to open when the pressure exceeds 150 psi. What Are the Causes of Leaking Water Heater Pressure Valves? 1. High Water Pressure. Not all leaking valves are broken valves. The pressure relief valve on a water heater might occasionally leak even though it is …1. Your city water pressure is too high. So use a pressure regulator, or just fill the tank, turn off city water and run off of the 12V pump. 2. The screen has not been reinserted into the drain lever...if it has, it might have a nick in the O-ring. I would try #1 first and that will tell you if you have an issue or not.Rinnai water heaters are some of the most reliable and efficient units on the market. They provide hot water on demand and can be installed in a variety of locations, making them a... So if you find the PRV is leaking water (particularly when the water is heating up) then the chances are that your expansion vessel is either inadequate, or it needs repressurising. (When it is working correctly, an expansion vessel lets water in as the pressure increases and lets it out when the temperature - and therefore pressure - decreases). Contents show. If your hot water heater’s pop-off valves just won’t stop popping off no matter what you do, it may be because: There’s no expansion tank connected to the water heater. The incoming water pressure is too high. The pressure relief valve setting is too low. You’ve used the wrong size valve. Check The Pressure Relief Valve. One common cause of water heater leaks is a faulty pressure relief valve. This valve is designed to release excess pressure from the tank, and if it becomes defective, it may result in leaks. Check the valve for any signs of damage or leakage and replace it if necessary.Adjust a water pressure-reducing valve by loosening the lock nut and turning the adjustment nut counterclockwise to reduce the pressure or clockwise to increase it. Install a press...If this doesn’t happen, you forgot step #2.) Remove the cover from the water heater. Lift the toggle valve on the pressure relief valve until it stands straight out in the fully open position. (Stand to the side when you do this — the contents may be under pressure which could spray you with water.)Most standard indoor water heaters have a relief valve. This purpose of the relief valve is to discharge water in two cases: Excessive water temperature. Excessive water pressure. When either of these takes place, the relief valve is activated, and the excess hot water flows out the relief valve. But this is not always the case.Mar 6, 2024 · This can cause the valve to leak. 3. Overheating: If the water heater is overheating, the pressure inside the tank can increase, causing the relief valve to open and leak. 4. Sediment buildup: Sediment can build up in the water heater over time, causing blockages and reducing the efficiency and lifespan of the unit. And it is a different design as well. For example a Rheem ProTec TPR valve (shown above) designed for a water heater has these specs: Temperature Relief: 210°F (99°C), Pressure Relief Range: 75 to 150 psi (5.2 to 10.3 bar). Notice that it is opening at a higher pressure than the TPR valve on your boiler itself.There are some parts that tend to go bad on hot water heaters, including heating elements on electric water heaters and fuel valves on gas water heaters. Plumbing supply stores tha...Homeowners can drain a Rheem water heater by turning off the power to the heater, shutting off the water supply and attaching a hose to the drain valve. If the bottom of the heater...What To Know. If the temperature setting on the water heater is set too high, it can cause the water to boil and the pressure inside the tank to increase, causing the …Rinnai water heaters are some of the most reliable and efficient units on the market. They provide hot water on demand and can be installed in a variety of locations, making them a...Rinnai Tankless Water Heater Leaks. For Rinnai tankless brands, various factors can also lead to leakage. Pressure Relief Valve Activation. The pressure relief valve triggers during surges to release excess pressure. If activated too often, it can leak over time. Inspect the valve carefully and replace it if worn out or continuously active ...Turn the power off for an electric water heater at the circuit board. On a gas water heater, there is a dedicated gas shutoff valve at the base of the tank, near the gas line. Gas valve on water heater. Step 3. Shut Off Cold Water Supply. The next step is to stop the flow of cold water supply into your water heater.Mar 1, 2024 · A water heater pressure relief valve (T&P valve) is a safety device that releases excess pressure and heat from the tank to prevent explosion. It opens automatically when pressure or temperature gets too high. The T&P valve has a spring-loaded mechanism and temperature sensor. A temperature and pressure relief valve, or a TPR valve, is fitted on most water heaters. If the temperature or pressure within the water heater becomes too high, this valve is designed to release water or steam to keep your water heater from blowing up. The trouble is, a TPR valve that’s leaking can mean it’s working or needs replacing.Jan 18, 2022 · This excess pressure is absorbed by the expansion tank so the final pressure of the hot boiler may go up to 15-20 PSI typically, which is below the usual 30 PSI setpoint of the pressure relief valve. Some regulators include a backflow preventer and some use a separate backflow preventer that is installed between the regulator and the boiler. Water heaters raise the temperature of water for use in bathing, cooking, irrigation, industry and other hot-water applications. Here’s how the three basic types of water heaters w...Jun 28, 2021 · A water heater pressure relief valve, also referred to as a T&P valve, pressure relief valve, or water heater temperature valve is a safety feature that you can find on any water heater. The reason it’s there is to keep you safe in case the water pressure is too high. Without this safety feature, your water heater could end up breaking. This excess pressure is absorbed by the expansion tank so the final pressure of the hot boiler may go up to 15-20 PSI typically, which is below the usual 30 PSI setpoint of the pressure relief valve. Some regulators include a backflow preventer and some use a separate backflow preventer that is installed between the regulator and the …This can cause the valve to leak. 3. Overheating: If the water heater is overheating, the pressure inside the tank can increase, causing the relief valve to open and leak. 4. Sediment buildup: Sediment can build up in the water heater over time, causing blockages and reducing the efficiency and lifespan of the unit.To fix a pressure relief valve on a hot water heater, that keeps opening, or leaking, you must replace the relief valve. First, you should drain the tank. Then, remove the discharge tube. Next, you will replace the pressure relief valve. Then, put it back together and fill the tank.To fix a pressure relief valve on a hot water heater, that keeps opening, or leaking, you must replace the relief valve. First, you should drain the tank. Then, remove the discharge tube. Next, you will replace the pressure relief valve. Then, put it back together and fill the tank.Learn the common causes and solutions for water heater pressure relief valve leaking. Find out when to replace the valve, how to test it, and when to call a …When your household water heater fails, it can be a disaster. No hot water can mean no washing up, no showering and sometimes no heating either. So it pays to do your research as t...Replacing the entire hot water tank drain valve is usually the most reliable fix for a leak. However, you can try and tighten the valve slightly with a wrench to see if the leak stops. Be careful not to overtighten the valve, or the leak could become worse or the valve might break off. Always use the plumber’s tape (thread seal tape) on the ...A water heater may have an internal leak if water is dripping or leaking from the water tank's pressure relief valve a device used to protect the water heater from being damaged by excess water pressure. A leaking water heater can cause serious water damage, even flood a basement, if it goes unfixed for an extended period of time. …A consistently leaking T&P valve means your water heater needs attention. There's something that's causing your water heater to reach unsafe temperatures that activate the T&P valve. High Limit Switch. As we mentioned earlier, the high limit switch will trigger when the water within the tank reaches 180°F.As I mentioned earlier, the TPR valve on a water heater is set to go off at 150 psi, or 210 degrees Fahrenheit. These numbers will be printed right on the valve, or on a tag attached to the valve. See below. If a pressure relief valve for a boiler is accidentally installed on a water heater, it will leak like crazy from the start. These valves ...Nov 15, 2020 · Across water heaters, the relief valve will normally - open at 150 psi pressure and/or - open at 210 degF temperature and must be capable of discharging energy (as BTUs) at a rate greater than the input rate of the water heater's energy source To simplify life you'll typically find TPR valves sold in BTU capacity ranges 1 group for heaters ... Jan 7, 2024 · Shut the water off and turn the temperature down on the water heater. Open the nearest hot water faucet to allow water to drain and remove the vacuum that could be present in your pipes. Attach the hose section to the bottom of the tap on your drain valve. If you have a floor drain, lay the hose over the drain. Dry up as much of the water as possible and do a visual inspection of the water heater for oblivious signs of leakage. Allow the water heater to sit for several hours to see if the water returns. If the water does not return, restore power to the water heater and set the temperature to a maximum of 125°.5 Aug 2023 ... Leave that hose bib oen and see if it stops dripping. After an hour if it still drips then the internal coil may have a pinhole in it. That coil ... Replaced but still leaking. Like the title says. I have a 50 gal water heater from 2010 that is leaking a little out of the pressure relief valve at the top of the tank. I destroyed the valve trying to remove it last night with a crescent wrench but was guided to buying a pipe wrench from past threads here which got it out. 'The pressure relief valve is a safety feature that prevents excessive pressure from ... 'Regularly check your water heater for signs of leaks or corrosion on the tank and its …A Water Heater Pressure Relief Valve is a critical safety device integrated into the design of water heaters. It’s a simple yet effective mechanism that ensures the safe operation of your water heating system. Located either on the top or the side of the water heater tank, the PRV is a valve with a spring-loaded mechanism.This video explains how to replace the temperature and pressure relief valve (T&P valve) on a tank water heater.If you are looking to order a T&P valve, visi...Most standard indoor water heaters have a relief valve. This purpose of the relief valve is to discharge water in two cases: Excessive water temperature. Excessive water pressure. When either of these takes place, the relief valve is activated, and the excess hot water flows out the relief valve. But this is not always the case.Steps To Fix RV Water Heater Pressure Relief Valve That’s Leaking. 1. Check The Thermostat. You will want to start with the RV water heater’s thermostat. The purpose of looking at the thermostat is to see if the temperature is fine. If there is a sudden increase in the temperature, this might be a sign there is an issue with the water ...Replacing the Overflow. 1. Turn off the gas to your water heater or flip the breaker if you are having the electric type. Then, close the cold water cut-off valve that goes into the heater. 2. Open the overflow at the bottom for about 60 seconds to drain the water out of the tank and relieve the pressure. Then, remove the overflow pipe from the ...How do I test a pressure relief valve in a water heater? How does the relief valve work? In this quick episode of Repair and Replace, Vance explains how to test …Trying to make sure it isn't the expansion tank. If it is rising when the system isn't heating then it has to be potable water leaking in. The 2 possibilities are: 1. The coil in the indirect water heater is leaking. 2. The pressure reducing valve isn't holding. The other wrench in the works here is we don't know if those ball valves are holding.19 Oct 2023 ... Comments21 ; How To Replace Pressure Relief Valve On A Water Heater (T&P). AmplifyDIY · 692K views ; Water Heater Leaking At Relief Valve Diagnose ....Drain Some Water from the Tank: Attach a hose to the drainage valve and open it slightly to relieve pressure and drain some water, making it safer to remove the relief valve. Remove the Old Valve: Using a pipe wrench, carefully remove the old relief valve. Place a bucket underneath to catch any dripping water.Water heater pressure relief valve can leak and break your hot water tank. Top Reasons Relief Valves Discharge. Though this is a subject we have visited many times it is always good to take a minute and revisit some common reasons your PRV may be discharging when it shouldn’t be.Canada. Nov 3, 2009. #1. We had Navien tankless water heater installed about a week ago. The pressure relief valve was installed away from the drain opening in the floor and the installed told us that it was ok beacuse there wouldn't be any water leaking from it anyway. Well, there has been quite a bit of water coming from the pressure relief ...Leaking pressure relief valves can lead to water damage and should be addressed immediately. We will discuss the common causes of a leaking pressure relief valve on a Bradford White water heater and provide steps for troubleshooting and fixing the issue. We will also explore the importance of maintaining an optimal water pressure level in your ...Four common reasons a pressure relief valve might be leaking include: 01. Pressure Relief Valve isn’t Fully Closed. Pressure relief and safety relief valves will leak if the valve isn’t fully closed. This is a common problem in industrial settings where environments are often dusty or dirty. If there is any debris in the valve, it can ...Rinnai water heaters are some of the most reliable and efficient units on the market. They provide hot water on demand and can be installed in a variety of locations, making them a...It is called a T&P (temperature and pressure) valve remover. This water heater pressure relief valve replacement tool allows you to safely and quickly remove and replace the temperature/pressure valve. The tool fits most water heater brands, which include Atwood/Dometic or Suburban. It is made to use a 7/8″ socket or wrench for …Step 2: Turn off the cold water valve. Your water heater gets its water from the cold water supply. It should have a shut-off valve at the cold inlet. Turn the lever to the off position. If your tank has a wheel on it, turn it clockwise until the water shuts off. At this point, you do not need to drain the tank.A water heater can leak from the bottom due to various reasons. Common causes include loose valves, excessive pressure in the tank, issues with connecting pipes, and corrosion within the tank. Sometimes, issues with the pressure relief valve or internal components can also cause leakage from the bottom source.Canada. Nov 3, 2009. #1. We had Navien tankless water heater installed about a week ago. The pressure relief valve was installed away from the drain opening in the floor and the installed told us that it was ok beacuse there wouldn't be any water leaking from it anyway. Well, there has been quite a bit of water coming from the pressure relief ...5 Aug 2023 ... Leave that hose bib oen and see if it stops dripping. After an hour if it still drips then the internal coil may have a pinhole in it. That coil ...Hi, First time here, so please excuse my lack of knowledge. I fired up my boiler for the first time a week or so ago and shortly after noticed that the pressure relief valve was leaking a steady drip of water. I replaced the pressure relief valve, but the leak persisted. Having done some...5 Aug 2023 ... Leave that hose bib oen and see if it stops dripping. After an hour if it still drips then the internal coil may have a pinhole in it. That coil ...Jul 10, 2023 · Drain the water heater to relieve pressure and remove any sediment. Connect a garden hose to the drain valve at the bottom of the water heater and open the valve to drain some water. Flushing the tank can release pressure and remove any sediment that has built up. Inspect the valve for any visible damage or wear. A water heater leaking from the relief valve is a problem you don't want to have, especially during winter. Learn the causes, symptoms and solutions of this …Water leaks can be a homeowner’s worst nightmare. Not only do they waste water, but they can also cause significant damage to your property if left untreated. Identifying the signs...6 Jan 2022 ... The Temperature and Pressure Relief Valve is a safety feature built into all water heaters. The T&P valve may be located on the side or the top ...There are some parts that tend to go bad on hot water heaters, including heating elements on electric water heaters and fuel valves on gas water heaters. Plumbing supply stores tha...Connect a hose to the tank. This can be a garden hose or the hose that comes with some expansion tank models. Open the drain valve and drain the tank into a container, lawn, or garden. You will need to loosen the drain valve to remove all water from the tank. Ensure the tank is completely empty of water.The most common reason for a water expansion tank leaking is that the pressure relief valve is damaged. Loose pipe fittings can also explain why your water expansion tank is leaking. Otherwise, you need to replace your water heater expansion tank if it is broken, and it costs an average of $361. Loose pipe fittings are the easiest …A leaking pressure relief valve is another common problem. This valve is essential for regulating pressure inside the tank to prevent overheating and potential explosions. If you notice a Rheem water heater relief valve leaking, it may need to be replaced. However, do not attempt to remove or replace this valve yourself, as it can be …I have recently replaced the pressure relief valve as well as the expansion tank. I have attached a photo for reference. My water pressure measured at around 60 psi, so I matched the expansion tank prior to installation. Problem: My new pressure relief valve leaks approximately 1/2 gallon of water every night at the same time around 3:00AM.Dec 9, 2015 · As the water heater heats the water, it expands, which builds up pressure in what is now essentially a closed system. When the pressure builds up enough, the T&P relief valve on the water heater just does it’s job and relieves the excess pressure by leaking a little water. The Fix When a closed system exists on the water distribution piping ... Most standard indoor water heaters have a relief valve. This purpose of the relief valve is to discharge water in two cases: Excessive water temperature. Excessive water pressure. When either of these takes place, the relief valve is activated, and the excess hot water flows out the relief valve. But this is not always the case. One of the most common problems that happens when water pressure is too high is leaks in the plumbing. High water pressure can also cause faucets to make too much noise or cause sp...If this doesn’t happen, you forgot step #2.) Remove the cover from the water heater. Lift the toggle valve on the pressure relief valve until it stands straight out in the fully open position. (Stand to the side when you do this — the contents may be under pressure which could spray you with water.)Oct 17, 2020 · Attach a garden hose to the drain valve which will be at the water heater’s bottom. Run the hose to a floor drain or to the outside. First open the drain valve and then open any hot water faucet to release the vacuum in the tank. Put a bucket under the T&P valve’s discharge pipe and open the T&P valve. Troubleshoot a Leaking Water Heater Pressure Relief Valve. Know How Now. 81.6K subscribers. Subscribed. 1K. 125K views 5 years ago. Steps to troubleshoot …A minor leak from the pressure relief valve serves as a warning call from your water heater. While it may appear inconsequential, it’s a subtle signal that your heating hero needs attention. Treating this minor leak as a call for TLC allows you to prevent potential escalation into more severe issues, ensuring the continued efficient ...Location: Katy, TX. Posts: 839. Eric --. Here are a couple of thoughts on your leaking hot water tank pressure relief valve. 1) The valve is old and has calcium deposits and/or corrosion that is preventing the "plug" inside the valve to seat properly. The plug and seat are both metal, typically stainless steel.Jul 10, 2023 · Drain the water heater to relieve pressure and remove any sediment. Connect a garden hose to the drain valve at the bottom of the water heater and open the valve to drain some water. Flushing the tank can release pressure and remove any sediment that has built up. Inspect the valve for any visible damage or wear. Sep 23, 2020 · A: Water heaters can leak due to a number of problems, including loose valves, excessive pressure in the tank, or issues with the pipes that connect to the unit. And if your water heater is more ... Dec 9, 2015 · As the water heater heats the water, it expands, which builds up pressure in what is now essentially a closed system. When the pressure builds up enough, the T&P relief valve on the water heater just does it’s job and relieves the excess pressure by leaking a little water. The Fix When a closed system exists on the water distribution piping ... The pressure relief valve (TPR) at your water heater protects you from high heat and pressure. If it leaks, you can fix it by replacing the valve or installing an expansion tank. Learn how to do both, what to do if the leak …Why Your Heater Pressure Relief Valve Is Leaking. by Ossiana Tepfenhart. Updated: February 21st, 2022 Published: March 11th, 2021. Your water heater’s …Cause #2: Pressure Relief Valve: The temperature and pressure relief valve may be leaking – While it is normal for this to let out small amounts of water occasionally, it should not be continuous. If there is a puddle, your valve might need replacing. Cause #3: Loose/leaking pipe joints: Over time, fittings can come loose.Step 6: Install the New Valve. Wrap plumbing tape clockwise around the threads of the new TPR valve. Three times around is usually enough, leaving about 1/4 inch of the threads exposed at the bottom to keep excess tape out of the tank. Screw the valve into the valve opening and tighten it with the pipe wrench.Your water heater pressure relief valve is designed to stop too much pressure from building up in the system and regulate the temperature. Your relief valve can start leaking if the thermostat is set too high, and this is a common problem with RV water heaters. Start by checking your thermostat to ensure it's set at the right temperature.Rather that focusing on Leaking relief valves, first check pressure reducer/regulator. They are often source of makeup water raising system pressure till relief valve leaks. A simple test is shut off feed valve to regulator. Drain boiler water to 12 psi. If over xx hours pressure does not rise, leaking regulator is likely cause.A leaking pressure relief valve – Placed at the top side of a water heater, the pressure relief valve prevents excessive pressure in the water heater by opening when the pressure is extremely high. By letting out water, the pressure inside the water heater is reduced, averting risks. Leaks in the valve mean that there is too much pressure or ...
The most common reason for a water expansion tank leaking is that the pressure relief valve is damaged. Loose pipe fittings can also explain why your water expansion tank is leaking. Otherwise, you need to replace your water heater expansion tank if it is broken, and it costs an average of $361. Loose pipe fittings are the easiest …. Gyms in jersey city
27 Jan 2019 ... YOu'd probably know if the water was near boiling. You may not notice that the pressure is high. If you have a closed system, if you don't have ...Drain Some Water from the Tank: Attach a hose to the drainage valve and open it slightly to relieve pressure and drain some water, making it safer to remove the relief valve. Remove the Old Valve: Using a pipe wrench, carefully remove the old relief valve. Place a bucket underneath to catch any dripping water.A leaking pressure relief valve is another common problem. This valve is essential for regulating pressure inside the tank to prevent overheating and potential explosions. If you notice a Rheem water heater relief valve leaking, it may need to be replaced. However, do not attempt to remove or replace this valve yourself, as it can be … Leaks at temperature / pressure relief valves: This article describes the causes of leaks, drips, or discharges from pressure relief valves, temperature/pressure relief valves, or TP valves found on heating boilers, water heaters, or the simpler pressure relief valves found on water pressure tanks. When it comes to installing a water heater in your home, there’s more to consider than just the price of the unit itself. Many homeowners are caught off guard by the additional cos... Replace the TPR Valve. Wrap the threads of the new TPR valve with plumber’s tape or apply joint compound liberally. Screw the valve into the tank until it is hand tight and then use a wrench to tighten it until the outlet is facing towards the overflow drain pipe. Reconnect the drain pipe. If the pipe is CPVC, you can splice the cut pieces ... Turn the power off for an electric water heater at the circuit board. On a gas water heater, there is a dedicated gas shutoff valve at the base of the tank, near the gas line. Gas valve on water heater. Step 3. Shut Off Cold Water Supply. The next step is to stop the flow of cold water supply into your water heater.A water heater pressure relief valve is exactly what it says on the tin: a safety mechanism that prevents excessive pressure from building up in your water heater's tank. ... You should also call a plumber if you see signs that the valve is leaking, such as water pooling on the floor under the tank. Once you've completed the test, close …Rather that focusing on Leaking relief valves, first check pressure reducer/regulator. They are often source of makeup water raising system pressure till relief valve leaks. A simple test is shut off feed valve to regulator. Drain boiler water to 12 psi. If over xx hours pressure does not rise, leaking regulator is likely cause.Why Your Heater Pressure Relief Valve Is Leaking. by Ossiana Tepfenhart. Updated: February 21st, 2022 Published: March 11th, 2021. Your water heater’s …Replacing the entire hot water tank drain valve is usually the most reliable fix for a leak. However, you can try and tighten the valve slightly with a wrench to see if the leak stops. Be careful not to overtighten the valve, or the leak could become worse or the valve might break off. Always use the plumber’s tape (thread seal tape) on the ...Jan 18, 2022 · This excess pressure is absorbed by the expansion tank so the final pressure of the hot boiler may go up to 15-20 PSI typically, which is below the usual 30 PSI setpoint of the pressure relief valve. Some regulators include a backflow preventer and some use a separate backflow preventer that is installed between the regulator and the boiler. There are some parts that tend to go bad on hot water heaters, including heating elements on electric water heaters and fuel valves on gas water heaters. Plumbing supply stores tha...I also checked the pressure in the expansion tank and found no air but rust colored water. So I replaced the relief valve( same specs.) as the old one and ...Water heaters raise the temperature of water for use in bathing, cooking, irrigation, industry and other hot-water applications. Here’s how the three basic types of water heaters w...To prevent this, it is important to set the water pressure at an appropriate level. Most residential water heaters operate best at a pressure of around 50-60 pounds per square inch (psi). If the pressure exceeds this range, it can put stress on the blow off valve, leading to leaks or malfunction.Is your toilet constantly running, causing an annoying sound and wasting water? One possible culprit could be a faulty fill valve. The fill valve is responsible for regulating the ...2) Pressurize the water system and check for leaks, using the cold water valve. 3) Record the pressure. 4) Close the cold water valve. 5) Open the hot water valve. 6) Record the pressure. 7) Start the water heater. 8) Watch the pressure gauge. 9) Once the water heater shuts off, check if the relief valve is dripping.Exercise relief valve by opening and closing it a few times. Leave relief valve open and allow tank to drain to valve level. This re-establishes the cushion of air at the top of the tank. Close valve and turn on water pressure. If the valve still leaks, it is a hardware store item, and an easy replacement.29 Feb 2020 ... Comments19 ; How To Replace Pressure Relief Valve On A Water Heater (T&P). AmplifyDIY · 696K views ; Water Heater Leaking At Relief Valve Diagnose .....
Popular Topics
- How to relight pilot light on furnaceTattoo miami
- Best doundationPiercing jewelry
- Three brothers winery nyTempurpedic vs sleep number
- Galaxy s23 fe reviewSimpleflirts
- Compsci 188Mcdonald's fish filet sandwich
- Cancel hand and stone membershipTypical window replacement cost
- No work experience resumeKeratin complex smoothing treatment