The tap is at the 3/4 height if the tank and it is full of water but when I attach the garden pipe, there’s no pressure at all, not even enough to water the plants.
Searched online but could mot find proper solution, please help.
Thank you in advance.
The tap is at the 3/4 height if the tank
Move the tap to the bottom of the tank.
It will increase, but don't expect miracles. You'll get about 1.4 PSI per meter of water height.
Check your pipes and connections for blockages.
If you want pressure like town water then get a pump.
The only pressure you'll get is gravity, without adding a pump to increase this.
Assuming you have a tank that's 2m high, your tap is 3/4 of the way down, and ignoring all loses across hose/connections, and you don't lift the hose above that point…
A full tank is 1.5mhd, or about 1psi.
Your normal home tap is likely sitting around 50psi.
Gravity is good but not that good. Sorry it has disappointed you on this occasion.
This would probably work on Jupiter though.
you will get a slow dribble. maybe put a timer on the tap and setup something to dribble on the plants for a while. Otherwise get a pump to increase pressure or use a watering can.
Bear in mind that most timers don't work with low pressure (in fact they reduce the pressure a bit). You have to get a timer that specifically works at low pressure.
Yeah, timer use cheap solenoid valve which doesn't work on low pressure. Cheapest of the bunch is probably the Holman tank timer for about $55.
For irrigation you are out of luck unless 1) you raise the tank up significantly to increase the gravity (think about those old water towers you see - there's a reason the tank is on top of the building) or 2) you install a pump which obviously needs power and makes noise.
I make an effort of hand watering with a can during the hot months to drain the tank before winter.
The best solution is to purchase a small water pump.
The Aldi water pumps are good value, I've had one for 3+ years and no issues with it.
The tap is at the 3/4 height if the tank
Really? So any water in the tank below that level can't be accessed? Doesn't sound right to me. How big is this tank?
Get the existing outlet moved, or a new outlet installed, as low as practical when you install a pump.
Unless you have a massive tank at height you aren't going to get mains water pressure out of it. The little tanks are really only for filling buckets - you can buy pumps that fully submerge so you can chuck it into the bottom (sump pump) - turn it on when you want and then it will drain the tank and turn off when the float hits the bottom.
Yes need to add a pump - Trust me I've tried every other way to cheap out but in the end it's all a waste of time, effort and money.
3/4? You sure your tank is not upside down?
How big is the tank (height)?
You'll only get about 1.4 PSI from each meter of water (above the tap and hose end).
The standard house supply pressure in AU is 70 PSI (500kpa), so you can get an idea of the pressure you can expect.
A full 3 meter high tank will only give at best 4.2 PSI (30kpa)..
The pressure at a house tap is usually at least 30 - 50 psi.
You'll at best get about 1 tenth of your house tap pressure.
I'd look at a second hand Davey XF171 - versatile little pump and can be found second hand for $50 - $150.
I saw water pumps at Aldi yesterday
You need a pump. There are some scenarios/applications where you don't but otherwise it's just an exercise in frustration.
Pressure washer on lowest setting
or watering can
Really depends what you want to do. If it's for hosing plants you can get a 240v pump which will work great, or else you could install a sprinkler system or perforated hose any use a cheaper 12v pump.
@ Chandragupt. So what's the plan now? A new pump, relocate outlet, lift the tank up for more pressure, watering can, or just put it all in the too hard basket?
Buying a small pump mate, thanks.
You could try using a larger hose to get more water, but it won’t really increase pressure and is still limited by the smallest opening in the system. No good it you can’t fit a bigger outlet to the tank.
As an alternative to a water pump you could seal off the top and use an air compressor to increase pressure. Please post video of when you do.
You likely would need a rain water tank pump