How do you clean sediment out of Bladder style pressure tank?

Plumbing Forums

Help Support Plumbing Forums:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

kudzu

Member
Joined
Nov 6, 2013
Messages
11
Reaction score
0
Location
,
I know that I have sediment in my well water. I have a filter after the pressure tank to stop it from going through the house. Recently, I noticed a drop in water pressure, especially just before pump cuts in. I have a spigot just after the switch and pressure tank. How do I clean out the sediment in the bladder tank? Can I turn off pump, open spigot and let water out, then just turn pump back on for 5-10 minutes? Will the water travel through the pressure tank before exiting the spigot? Thank you for your assistance.
 
If your bladder tank is set up properly, there should never be any build up of sediment in your tank. Bladder tanks fill and empty almost completely each cycle. So if sediment goes in, it will come back out on it's own. All bladder tanks have their one connection at the bottom center of the tank. And the bottom is rounded. That is until the introduction of the Zilmet Tanks. It has it's in/outlet several inches off the ground on the side of the tank.

To make your tanks operate properly, set the air pressure in it at two pounds less than the cut in pressure of the pump. This has to be done with the pump off and all water pressure drained off.
 
  • Like
Reactions: Cap
When I turn pump off and drain the system, I get sediment at the end. Just thought this was from bladder as a stop flow of water back from filter system to spigot. Perhaps I have sediment build up in line around the switch and pressure tank. I had that section and bladder tank replaced 3 years ago. Bladder was ruptured and that section of line was nearly closed due to deposit. We also had pump lifted a couple of feet higher so as not to stir as much sediment. Would I still benefit from trying to clear this section of sediment? If so, same process as original posting?

thank you
 
I think your confusing mineral build up with sediment. Sediment is a very fine silty substance that doesn't stick to pipes like sulfur, iron, calcium and magnesium do.

It is normal for minerals to stick to pipes over long periods of time. Then when the pump is turned off and the pressure dropped to zero, some of that mineral will relax and break off the piping. Now its able to plug up aerators, toilet fill devices etc. If you really wanted to knock a lot of this mineral off the plumbing, air works wonders.
 
First, thank you for your assistance. We have noticed a drop in water pressure, more noticeable when pressure is near cut-in value. The plumbers we used to put in new presure tank said that build up in the pipes was cause. They did specifically mention sediment. Really low pressure in second floor shower when other facets open. How can fix this? Air, you say. Thanks again.
 
When you need a new tank or pump repair, you should probably be calling a licensed Well Driller or Pump Installer. They have far more experience in that area than most Plumbers do. Minerals are what plug your piping not sediment. And if they said that was the problem, they probably know because they put in your tank and were able to see what the pipes look like.

If you want to try the air thing, this is how I do it. First of all having a bladderless tank is a good thing to have because you can fill it with 60 lbs or so of pure air pressure then let her fly. However if you don't have one, you can put a tee in your plumbing just after the tank, screw a schrader valve in and with the pump running and an air compressor running, open up a cold water faucet one at a time and let the water run. It will turn all kinds of different colors depending on the types of mineral you have, and the air will make the water and mineral spit all over the place, so putting an old towel around the faucet is a great idea.

This won't totally clean your plumbing, but will knock off a lot of deposits which will hopefully improve your pressure. If your pump is capable of more pressure than it's doing now, you can turn up your pressure switch and increase your tanks air pressure. This will help too.

If you want to graze on my site, there are lots of questions answered there on the FAQ's page.
 
Back
Top