How to Repair Urinal Plumbing Problems

Row of urinals
  • 1-2 hours
  • Intermediate
  • 0-100
What You'll Need
1 pair of channel locks
Diaphragm replacement component
What You'll Need
1 pair of channel locks
Diaphragm replacement component

If you are going to repair urinal plumbing problems in your comfort room, you should be aware there are a number of problems associated with its plumbing. Old urinals also tend to smell, which is caused by the bacteria that thrives in uric sludge, bio film and lime scale build up on the inlet side of the waste trap and outlet. It could also be caused by seepage coming from the connection between the waste trap and outlet.

Urinals could also have clogs in the drain pipe and this is caused by fragments of chemical blocks, lime scale build up in the pipe and waste trap and by uric sludge. However, the most common problem you can encounter with urinals is their propensity to “run.”

You'll have to shut the water supply down to stop it but before doing that, you can try a little quick fix you can do by yourself with some common materials. Thus, you can save yourself from paying the outrageous service fees of a plumbing professional, which has a high possibility of performing the same job you will be doing.

Step 1 - Locate the Secondary Water Shut Off

The secondary water shut off in your urinal is usually located at the first joint that juts out from your toilet wall or tile. Typically, a chrome cap is used to hide it but it can easily be popped off by means of a screwdriver. Sometimes, it could also be a black disk that protrudes from the pipe that runs through your toilet wall.

Step 2 - Stop the Water Flow

With the use of the screwdriver, turn the water supply going to the urinal off by turning the water shut off screw. You should make your turn towards your left side. This will effectively stop water from going into your urinal.

Step 3 - Loosen the Flush Head Screw

With the use of the channel locks, turn the bolt that is located on top of your flush head. It is hexagonal or octagonal in shape and it is the only like it on the flush head.

Step 4 - Remove the Cap of the Flush Head

To remove the flush head cap, you have to loosen the screw to the fullest. As you turn it loose, water that remains in the head will pour out. Do not be alarmed as this is normal.

Step 5 - Locate the Diaphragm

To locate the diaphragm, look inside the flush head. It is a large disc that is black in color and occupies much of the space inside the flush head. Hence, it should be very easy for you to find it. Remove it and put your new diaphragm in.

Step 6 - Replace the Flush Head

Once you have done with the diaphragm replacement, put the flush head back to where it should be and screw the hexagonal or octagonal screw on top back into place.

Step 7 - Restore the Water Supply

To bring the water supply back to the urinal, turn the secondary shut off back or to your right. Do this slowly.