Water Pump DIY

[tlfong01]

Introduction

I am doing home automation. I have learnt how to use relay, solenoid, and solenoid valve. I just found that I need to use a pump to work with the solenoid. So I am starting this new topic, ...

/ to continue, ...

Old Water Pump Posts to Refresh Memory

12VDC Water Pump
https://www.raspberrypi.org/forums/view ... 6#p1377308
https://www.raspberrypi.org/forums/view ... 6#p1381265
https://www.raspberrypi.org/forums/view ... 6#p1381664

SP20/20 12VDC Water Circulation Pump - £26
http://shop.solarproject.co.uk/catalog/ ... 4191d225f1

220VAC Water Pump
https://www.raspberrypi.org/forums/view ... 0#p1376178
https://www.raspberrypi.org/forums/view ... 0#p1374955
https://www.raspberrypi.org/forums/view ... 0#p1368636

Old post on WS122 12VDC Water Pump
https://www.raspberrypi.org/forums/view ... 4#p1419081

[tlfong01]

12VDC Water Pump Testing Notes

Now I am going to test the water pump I bought from TaoBao.

AliExpress DC 12V Solar Hot Water Circulation Pump Brushless Motor Water Pump 3M US$14
https://www.aliexpress.com/item/New-DC- ... 6bfc9e89fd

SP20/20 12VDC Water Circulation Pump - £26
http://shop.solarproject.co.uk/catalog/ ... 4191d225f1

TaoBao Medical Drinking Pressure Circulation Brushless DC Motor Silent Magnetic Water Pump ¥80-160
https://item.taobao.com/item.htm?_u=f3t ... 6993226670

Description:
DC 12V Hot/Cooling Water Circulation pump
Not for high pressure?

Features:
The pump is perfect for the family home thermal solar systems or any circulation pump application where conventionalpower is not available.
Horizontal inlet and outlet with rotatable cap, easy installation. Max operating temperature up to 100°C with External circulating water flow.
Super long working life.low consumption & low noise. Amphibious design.Submersible installation and entirely waterproof.

Inlet/Outlet: 1/2" male thead
Voltage: 12V DC
Maximum Rated Current: 500MA
Max Flow Rate: 6.5 L/Min
Max Water Head: 3 metre
Max system pressure: 10Bar
Max circulating water temperature: 100°C
Low noise: 30db at 1 metre

[tlfong01]

Now I am going to test the water pump I bought from TaoBao.
TaoBao Medical Drinking Pressure Circulation Brushless DC Motor Silent Magnetic Water Pump ¥80-160[/i]
https://item.taobao.com/item.htm?_u=f3t ... 6993226670
DC 12V Hot/Cooling Water Circulation pump Not for pressure boosting?
Inlet/Outlet: 1/2" male thead
Voltage: 12V DC
Maximum Rated Current: 500mA
Max Flow Rate: 6.5 L/Min
Max Water Head: 3 metre
Max system pressure: 10Bar

Testing WS122 Water Pump for Pressure Boosting

Spec says that the BLDC motor is wide voltage supply range, so I am also testing if I can adjust head by voltage.

Nanking Gospel Electronics WS122 Water Pump
https://item.taobao.com/item.htm?_u=f3t ... 6993226670

Application
For medical and drinking fountain, hot water circulation and booster BLDC low noise suction pump - 12V 3M ¥80, 24V 6M ¥85

Spec
12V V3 3M (not suitable for pressure boosting, suitable for circulation)
DC12V, 700mA max, 8L/min, head 3M
24V V6 6M
DC24V, 800mA max, 12L/min, head 6M

Working Life
1. 4.5 years - 100 degree C boiling water 24x7 non stop operation
2. 22 years - daily run 5 hours
3. 10 hours no water run 10 hours without damage (conventional pumps dry run 1 hour would be damaged).

Structure
Using electronic polarity changing, no carbon contact, high ? creamic shaft and shaft sleeve, one body magnet prevents ?, separate rotator and stator, epoxy filled, high precision, good shock absorption, 100% water proof, permanent magnet, low noise, small size, stable performance, wide operatiing voltage range

Advantage
logn life, low noise (< 35dB, low power models < 30dB), suitable for hot water circulation.
...

[tlfong01]

Water Features Water Pipe Resizing Notes

https://penzu.com/p/15e2e114

[tlfong01]

Water Features Water Pipe Resizing Notes
https://penzu.com/p/15e2e114

Rooftop Garden and Home Water Pressure Learning Notes

I know nothing of the water pressure at home, and rooftop where I am building a smart garden. So I googled.

Now I know it is about 40 to 60psi.

I am thinking a buying a cheap cheap water pressure gauge, so that I can measure the performance of the water pump and water valve used in my musical fountain / water feature project.

My googled readings are jotted down in the penzu journal entry below.

Household Water Pressure, Water Gauge Shopping List (penzu)
https://penzu.com/p/a19510cf

[tlfong01]

Water Pressure Meter

Now I have bought a water meter to check out how the booster pump is doing.

https://penzu.com/p/d3890d4d

It took me almost an hour to do the amateurish plumbing work of putting the pressure meter on the piping. Then I turned on the tap to find that the pressure in my home
is 20 something.

But I don't what 20 stands for. Is it mPa or PSI?

I need to google again.
...