Main Shut Off Valve Repair Replacement Mesa

Are you searching for “Main Shut Off Valve Repair Mesa” while looking for plumbers in Mesa, Arizona to repair your leaking inside or outside leaking main shut off valve. Maybe you water shut off valve is leaking under the sink, leaking in the basement or leaking when closed? In either case, ONE Call Plumbing Services can help! Below we offer DIY repair solutions and Professional repair solutions. If you already know you are going to need a professional, give us a call today at 480-ONE-CALL.

We answer the question, “Why does my leak shut off valve leak when closed?” If you should ever notice that your main water’s shut-off valve is dripping, it would be normal to be concerned as to whether or not it might become a more serious condition. The most common problem with water shut off valves is the standard gate valve. The standard gate valve commonly corrodes, causing damage and water leaks.

The Solution – DIY or Professional Valve Repair

You can replace the standard gate valve with a ball valve yourself. This type of valve will last longer and be less likely to get leaks. If you have problems, One Call Plumbing Services offer professional shut off valve repair solutions in Mesa, but first, give the following DIY solutions a try and see if they will put a stop to the leak.

Choose Your Shutoff Valve Repair Solution:

We offer 2 options for main shut off valve repair in Mesa. You can learn how to replace/repair your main shut off valve yourself, or have our licensed plumbing professional replace your main shut off valve for you. Choose your repair solution below.

DIY Shut Off Valve Repair Solutions:

  • Put more of the packing material on the packing nut.
  • Use a wrench to tighten the packing nut.
  • Always replace the packing washer.

Stay with us, and below we are going to walk you through each of these steps.

‘Reminder’, if these steps does not stop your valve’s dripping, it is probably telling you to bring in a professional, which will need to replace that gate valve by changing it to a ball valve.

Using a wrench to tighten the packing nut:

The purpose of the packing nut is to help make a seal on the valve stem at the water line that is water tight. Anytime there is a leak here, first check to see if the valve is shut completely off. So, the first thing you want to try is to tighten the packing nut.

Follow the instructions below to tighten the packing nut:

  • Using the wrench, turn the packing nut 1/4”.
  • Then, check again for leaks.
  • Is there still a leak? If so, give the packing nut another turn and see if it still leaks.

Should this not stop the leaking valve, continue to the next step.

Putting more packing materials on the packing nut:

Things you are going to need:

  • Wrench
  • Additional packing material, which you can get at most hardware stores.

When the main water’s shut off valve is tightened it is going to hold the packing material, pushing it against the washer and seals off the water. Over a period of time, the packing material sometimes hardens, and sometimes it will disintegrate. When it does, the seal is no longer dependable, and leaks may happen.

If this should happen to you, do the following in order to replace your packing material:

  1. Turn the water off at the street (this may require someone from your water department coming out and turning it off for you), or you can call a professional plumber to do it, however, it willnot be free of charge.
  2. You will need to let all of the residual water that is on the inside of your home run out, so turn on an inside faucet.
  3. The shut off valve needs to be loosened up, turn the handle as far as it will go.
  4. After loosening package nut, remove old packing. Packing that is made from Teflon and other fibers can be pulled out with the use of a toothpick, however, if there is a rubber gasket being used in place of Teflon, remove all of the rubber gasket.
  5. New packing should be wrapped counter clockwise around the stem 3 times
  6. Put the packing nut back on, being sure that packing catches hold, fitting snugly back in the packing nut. Do not over tighten packing nut.
  7. Check for any leaks after turning the water back on.

If you are still seeing a leak go to the next step.

Replacing the washer nut:

Things needed:

  • Wrench
  • A replacement packing washer, which you will be able to find in most hardware stores.

Should the water valve leak after doing the steps this far, there is a good possibility that the washer is bad and you may have to have to replace it.

Follow these steps to replace the washer:

  • You will need to remove the valve handle.
  • Also remove packing nut using a wrench.
  • Take off the old washer and put on a new one. Remember to get the same size washer as you are taking off. It is recommended to take it off before hand and take it when you go to get a new one just to be sure you are getting the correct size.
  • Check again for a leak.

Professional Shut Off Valve Repair Solutions

Main Shut Off Valve Repair Replacement Mesa Plumbers

Should you still have a leak after following all the steps above, you may need to get a professional out to look at the shut off valve. The best thing you can do when you have a leaky gate valve would be to get it replaced by a ball valve. If you follow all of the steps above and still have a leak at your water’s main shut off valve you might consider getting an upgrade and change it for a ball valve, which will last considerable longer.

If you are in need of a licensed plumber to do this for you and live in or around the Mesa area, call One Call Services at 480-ONE-CALL and get scheduled today. We can send out a certified plumber that will be able to replace that leaky shut off valve in a flash!


If you are looking for an efficient and trustworthy plumbing company valley wide, look no further than One Call Plumbing Services. For over 20 years, we have been providing world-class service for individuals, families, and businesses throughout our community.

We are always courteous towards our customers and respectful of our workspace, and you can rest-assured that if you hire us, your job will be handled the right way, the first time.


Phone: 480-ONE-CALL (663-2255)

1855 E. Southern Avenue #111
Mesa, AZ 85204

Email: [email protected]

Service Hours: Mon-Fri: 7:00am-5:00pm
Office Hours: Mon-Fri: 8:00am-5:00pm


Main Shut Off Valve Repair
User Rating
5 based on 1 votes
Service Type
Main Shut Off Valve Repair
One Call Plumbing Services
One Call Plumbing Services ,
1855 E. Southern #111,Mesa,Arizona-85204,
Telephone No.(480) 663-2255
Mesa, Arizona
Are you searching for "Main Shut Off Valve Repair Mesa" while looking for plumbers in Mesa, Arizona to repair your leaking inside or outside leaking main shut off valve. Maybe you water shut off valve is leaking under the sink, leaking in the basement or leaking when closed? In either case, ONE Call Plumbing Services can help!