Thread: Water pressure tank

I am looking for a pressure tank for my house water system. I need the type with the bladder inside. Any advice where to look?

We have them in the USA and they absorb pressure surges in the water supply system.
I don't think you would have that problem in most places in Thailand.

Steve

Originally Posted by RPETER65

I am looking for a pressure tank for my house water system. I need the type with the bladder inside. Any advice where to look?

Any professional plumber's supplies should have one, up to 500 or 1,000 l. Can't be much more specific unless you're in my area.

Any particular reason why you need one rather than a storage tank and a constant pressure pump, which have them built in (large, with the big 'drum' ones, or small with the smaller square ones)?

Originally Posted by JohnG

Originally Posted by RPETER65

I am looking for a pressure tank for my house water system. I need the type with the bladder inside. Any advice where to look?

Any professional plumber's supplies should have one, up to 500 or 1,000 l. Can't be much more specific unless you're in my area.

Any particular reason why you need one rather than a storage tank and a constant pressure pump, which have them built in (large, with the big 'drum' ones, or small with the smaller square ones)?

Yes there is an issue I don't like, when a water faucet is opened to run slow the water is constantly surging up and down, no steady flow.

^bleed the water out of your pump resevoir when it does that.

Originally Posted by Humbert

^bleed the water out of your pump resevoir when it does that.

Thanks, I'll give it a try.

Originally Posted by RPETER65

Originally Posted by JohnG

Originally Posted by RPETER65

I am looking for a pressure tank for my house water system. I need the type with the bladder inside. Any advice where to look?

Any professional plumber's supplies should have one, up to 500 or 1,000 l. Can't be much more specific unless you're in my area.

Any particular reason why you need one rather than a storage tank and a constant pressure pump, which have them built in (large, with the big 'drum' ones, or small with the smaller square ones)?

Yes there is an issue I don't like, when a water faucet is opened to run slow
the water is constantly surging up and down, no steady flow.

In that case you don't need a pressure tank! As said, if you've already got a constant pressure pump then all you probably need to do is bleed the tank - turn it off, open the drain plug, drain any water out, put back the drain plug, then turn it on again.

If you're not sure what to do get a local plumber who'll do it for you for a lot less than the cost of a pressure tank!

Originally Posted by stroller

Originally Posted by RPETER65

Yes there is an issue I don't like, when a water faucet is opened to run slow the water is constantly surging up and down, no steady flow.

Ah, now I understand the issue, we had the same.
An air ball-valve (not sure of the proper name) should sort this.
We installed a vertical 6" diameter air-filled plumbing section to even the pressure.
Works just fine:

That's a home-made pressure tank! You're curing the symptom, not the problem. ... and I think that's a 2" pipe, not a 6" one unless you're wall's made out of giant blocks.

You can still use a Psi tank, though you wont need a bladder in if your pump has, it will obviously give you a larger volume of pressured water to use, the last one I bought a few years back was SS, about 3,500 Baht.

A better alternative now is to use a Inverter type pump.

Originally Posted by stroller

Originally Posted by RPETER65

Yes there is an issue I don't like, when a water faucet is opened to run slow the water is constantly surging up and down, no steady flow.

Ah, now I understand the issue, we had the same.
An air ball-valve (not sure of the proper name) should sort this.
We installed a vertical 6" diameter air-filled plumbing section to even the pressure.
Works just fine:

Just one little problem with that design. The water will eventually absorb all the air bad you have no way to add air.

It shouldn't be too difficult to add a tyre valve to the top.

Just bleed the tank in your pump!

It's free and takes under a minute. If you're not sure what to do, get a plumber for, say, 300 baht, and watch what they do so you can do it yourself later.

Other solutions are like advising you how to put extra wheels on a bicycle when all you need to do is pump up the tyre or repair a puncture!!

Originally Posted by RPETER65

Originally Posted by Humbert

^bleed the water out of your pump resevoir when it does that.

Thanks, I'll give it a try.

So what happened, before we go into the advantages of inverter pumps, fitting tyre valves, and travel to Mars?

^Seems like solving a problem with a bazooka when a pea shooter will do. Bleed the pump resevoir.

555.
Sometimes it is best not to sweat the small stuff. Worry when you have no water!

Bought a new Hitachi domestic water pressure pump a few years back to replace identical unit that leaked…any tap partially on...surges. Could adjust pressure switch but felt ‘leave well alone’. Not an issue for me...as long as it continues to function.

If you think that you may have an airlock then slightly loosen the priming plug filler cap while pump is running...bubbles?? Then you have an airlock...Wait for non aerated water then re-tighten.

My installation may not be the poshest, smartest thing in the world, but it's been working fine for 9 years now and only costs a few Baht materials, easy enough to make yourself.

Originally Posted by Humbert

^Seems like solving a problem with a bazooka when a pea shooter will do. Bleed the pump resevoir.

But that would be common sense ... why would anyone want to do that when there's a more complicated, messy way?

Originally Posted by crepitas

Bought a new Hitachi domestic water pressure pump a few years back to replace identical unit that leaked…any tap partially on...surges. Could adjust pressure switch but felt ‘leave well alone’. Not an issue for me...as long as it continues to function.

Have you bled the tank? Just a thought as no-one may have suggested this yet ...

I'd use a 6" pipe up a wall as a ball valve to even the pressure out.
this would definitely work.

Lust bleed the air out, you do not need to do anything else????

Originally Posted by splitlid

I'd use a 6" pipe up a wall as a ball valve to even the pressure out.
this would definitely work.

Is that before or after you bleed the air out?