Water pump size

[Kiniyeow]

Is there a way to determine what size water pump is needed for a 1000 Liter 6' tall tank?   What other considerations do I need to think of when purchasing one.  Are the Mitsubishi ones typically the better ones for the price?

[Crossy]

What is the pump going to feed, or is it to fill the tank from a bore / well?

 

 

[Kiniyeow]

Just to fill a tank from city water supply.  One story house.  tank is just backup for when city water is offline I'll still have water.

[KhunBENQ]

I am bit confused by your question.

 

Is the tank elevated and the city water can not fill it?

 

Don't you intend to put the pump after the tank to pump water to the house? (which is the very obvious solution)

 

Or what is your idea?

 

Edited August 6, 2016 by KhunBENQ

[Kiniyeow]

Yes, (sorry for the confusion) tank is just for storage, pump is for pressure to the house.

[KhunBENQ]

One storey means it's one ground floor only.
A private house and a short distance from the pump.
One shower at a time.

In this case the smallest size of 150 W will suffice.
Take a model with a small pressure tank underneath.

[Kwasaki]

Have an Hitachi for house has been good and wasn't cheap.

On our small farmland have 2000 ltr tank and l just bought the cheapest small pump from Global forget make but power-wise has worked well for nearly 3 years now. 

[eyecatcher]

On 8/6/2016 at 1:03 PM, KhunBENQ said:

One storey means it's one ground floor only.
A private house and a short distance from the pump.
One shower at a time.

In this case the smallest size of 150 W will suffice.
Take a model with a small pressure tank underneath.

 

 

Not disagreeing at all.

I would suggest the OP goes to a pace they sell the Hitachis and Mitsubishis and picks up the leaflets. they will have a chart of all their pump models, standard, inverters/constant pressure etc etc.

the important thing is the head of water it can deliver.

yes the smallest would do a single storey, but you may decide to add a washing machine or garden hoses so you wouldnt want to be showering when the washer decides to take precedence on the water.

often the case that you should go up one model from what you think you need.

 

a typical 2 storey house would need a 150/200/250  but start oversizing and I guess many of you can tell tales about the bum gun blowing the wife off the bog seat.

[lopburi3]

Are you happy with normal water pressure from city?  Most people are not and use pump full time to increase that pressure to a level providing decent showers - using city water pressure just to fill tank.  The tank supply also allows some of the chlorine to exit and normally much faster washing.  And using it keeps it fresh with much less vegetation growth.  Also helps to provide warm water as gets heat from air and sun.  

[kamalabob2]

Mitsubishi manufactures in Thailand two series of water pumps which would be fine for a smaller single story home. The Mitsubishi EP Water Pumps | Mitsubishi WP Water Pumps are available in most parts of Thailand. There is a calculator to help determine which water pump on the https://www.mitsubishi-kyw.co.th/pump/microsite/index.php  web site.  For a larger home or a multi story home with more than three bathrooms you might consider the Mitsubishi Super Pump line of reasonably priced water pumps. I have used a Mitsubishi WP355 in two different homes in Buriram. The water pressure was fine in both a one story and a two story home with that residential grade Mitsubishi water pump. Parts and repair service for any line of Mitsubishi water pumps has proven easy for me to obtain in Buriram Isaan Thailand. 

[sometimewoodworker]

23 hours ago, kamalabob2 said:

Mitsubishi manufactures in Thailand two series of water pumps which would be fine for a smaller single story home. The Mitsubishi EP Water Pumps | Mitsubishi WP Water Pumps are available in most parts of Thailand. There is a calculator to help determine which water pump on the https://www.mitsubishi-kyw.co.th/pump/microsite/index.php  web site.  For a larger home or a multi story home with more than three bathrooms you might consider the Mitsubishi Super Pump line of reasonably priced water pumps. I have used a Mitsubishi WP355 in two different homes in Buriram. The water pressure was fine in both a one story and a two story home with that residential grade Mitsubishi water pump. Parts and repair service for any line of Mitsubishi water pumps has proven easy for me to obtain in Buriram Isaan Thailand. 

 

You talk about the EP (constant pressure) series and WP (well pump) series but your picture actually shows a UMCH (inverter) series pump.

 

so it isn't in your house?

 

FWIW we have an EP-155 and it's big enough for the two of us.

[Pib]

Keep in mind during your selection, the "wattage/power" of a pump primarily reflects its output capacity like how many taps it can feed at once while still maintaining rated pressure, etc.; not necessarily how much water pressure it puts out.   Generally at around the 200 watt pump rating point pumps will have a higher pressure output....better to take a shower with, fills up things faster, etc.  

 

Just for example take a look at below specs chart for Mitsubishi pumps....notice how at the 200W point the pressure output of the pumps jump from 1.9bar (approx 27psi) max to 2.8bar max (approx 40psi).....that a very significant pressure increase....you definitely feel that in the shower, how fast the water flows from a tap, etc. 

 

I would recommend you buy a pump which has a pressure output of approx 2.1 to 2.8bar which means it will be a pump of 200W or higher.  Personally, I would recommend a 250W pump for a good balance of pressure and capacity and would not be overkill in the OP's situation.   Summary: get one that puts out approx 2.1 to 2.8 bar pressure.

    

[lopburi3]

Remember 2.8 bar would only equal the minimum city water pressure of 40 psi in USA and will go down - so you may not experience what you want with shallow well pumps like this if you want a strong shower; regardless of there wattage.  

[kamalabob2]

Sometime Woodworker: The photo of the Mitsubishi SuperPump is at the home of a fellow Thai Visa forum member in southern Buriram province.  That Mitsubishi Super Pump is for four bathrooms in a two story shop house with two units. That series of Mitsubishi Superpump are not inverter type of pumps to my limited knowledge. The current booster water pump at my two story home in Northern Buriram province is McKarlen. It has proven successful for my home the few months I have had it installed. I have bought more than my fair share of water pumps since 2005 in Thailand. Nothing wrong with any of the water pumps I have bought, but I've had offers made to purchase the pumps I had working in my home and I then selected a different pump at a local Buriram water pump shop.  I've bought two Mitsubishi WP series pumps, Franklin Schaefer submersible pump, Hitachi Inverter water pump, and now this APP pump branded McKarlen booster pump. 

[kamalabob2]

A better photo of the made in Taiwan Global Water Solutions Booster Tank that works to boost water pressure in my Buriram small town home. The two 2000 liter water tanks store clean water which as gone through five filters prior to storage. The water tanks were installed in 2007 in a pump roof attached to the garage. 

[sometimewoodworker]

18 hours ago, kamalabob2 said:

Sometime Woodworker: That series of Mitsubishi Superpump are not inverter type of pumps to my limited knowledge. 

 

You are correct I was mixing up the UMCH, CMCH, and  the IP series as they are close in price

BTW here is a better /later version of the chart.

Edited August 17, 2016 by sometimewoodworker

[kamalabob2]

One story or multiple floor home in Buriram province I have needed some sort of water filtration. One of the Mazuma 50 liter water filters I had installed originally by Buriam Supply appliance store at a rental unit in 2006. When I moved to my own home in 2007 I had a Buriram water pump shop install more water filters the same day they installed water tanks and a water pump. Frankly the 20 inch sediment filters only look that color the day they are changed. I must wash them twice a week and then change them every six weeks, even more often if the municipal water is full of sediment. I backwash the carbon filter tank and I backwash the resin filter tank once a month. I use a different filter system for well water and for village water supply at a more modest home in a Buriram village.  To me it is more efficient and less costly to clean water rather than change clothes washing machines or live with stained porcelain fixtures. I certainly have seen water in Buriram Province that is high in Iron or other minerals that challenge water filters. 

[Kiniyeow]

Those two clear water filters are huge, where do you get them and how much are the replacement filters for them?  

 

[Isan Farang]

3 hours ago, Kiniyeow said:

Those two clear water filters are huge, where do you get them and how much are the replacement filters for them?  

 

 

Order and pay for them online, packing and service is spot on and delivered by EMS. Have used them for years with no issues.

 

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