I noticed that the stainless steel tank always has a bigger capacity compared to the fiberglass or polytank. Which is better between the two? In terms of longevity and maintenance.

This post has been edited by mystvearn: Oct 15 2016, 12:01 AM

stainless steel tank

No 1 use fiberglass anymore. Either SS or poly.

Poly come in many size and shape too.

My poly tank already 19yrs and still using. Cheaper a lot than SS.

totally agree, personally I dont the the benefit of going stainless steel...unless you have extra cash to throw

Actually is depend on which area you placing it, direct on sun SS will be much longer lasting... if located on a shelter-in-place polytank will be as good as stainless steel tank.

My poly tank is direct sunlight ontop open roof.

Opps. My bad. I see few neighbours use stainless steel tanks for capacity above 1000l. For poly, usually 300l

So poly as good as stainless steel?

Poly come in many shape and size.

You can have 1000L poly also.

I use 2 poly size 450L= 900l.

Anti Bacterial Tank - DOS Tank, no one pakai this?

One of my neighbours made this system with the SS tank. Not sure if poly have or not the inlets for it.

The 1125l SS tank is curved at the top and bottom has 2 inlets at the top, and 3 inlets at the bottom.

The very bottom of the curve inlet is used to drain the air karat
The other two bottom inlets slightly higher used for water in and water out

He placed two floatation switches/balls in the tank. One halfway, one at the top.
Water comes in from below.
When the water pressure is low, the water fill the tank up to the first ball. When the ball closes, the water will travel up to the second inlet. When the water pressure is higher at night, the water travels up and fills the whole tank.

Can do this setup with poly tank?

What is the purpose to have 2 ball valve ?

Lower pressure or higher pressure doesn't effect at all. Since the distance between 2 ball valve is very short.

There is must be some reason that we don't no.

Very interesting.

And as mention SS way longer lasting(around 60-100 years) than polytank(20-30 years) depend on Malaysia weather and material quality.

This post has been edited by sonic31s: Oct 15 2016, 08:43 PM

Where I stay, water pressure is quite low. Got worse since more shops built on the main road.

If I open the main tap at the meter, put hose and raise hose above 5 foot, water does not flow. Sometimes only air in pipe and water does not go to tank. Need to bleed at main pipe remove air then water will go in. It used to be that the water pressure is high enough that it can fill the top tank at night. Now very rare.,some neighbours resort to opening the tap at 3 am just to send more water to tank

The 2 ball valve is probably just 2-3ft. Doesn't effect much at all.

To counter this problem, double up the water volume. At night let it slow fill up the tank. Morning you have more water to use.

You need to check yourself how much water to use perday. To get a proper tank.

There is another way with the pump on the ground to pump water to the tank. But indirectly from the main.

I plan to change it another 5yrs. Doesn't require to last that long.

Another good about poly tank is, it is easy to clean. As it lower and wider and I can jump in to clean.

It is also very light compare to SS.

Nowaday SS material not sure is from China or local.

Sometimes a lot sometimes less. I take a bath with gayung and big kolah. So that kolah in my toilet as big as the 300L tank outside house. Shower tak syok mandi.

Thanks for the suggestion.

Ok, true asked some dealers before they mentioned Taiwan/China and local made. Only difference are on quality material.

Than it won't be better than the poly tank.

With the price expensive than the poly alot.

Yes the only option/different are SS longer lasting compared to polytank.