Garden Sprinklers

[BirdieMan]

I have a large garden and was thinking about installing in-ground sprinklers to make the watering job a little easier.  I bought a few pop-up and some pipe to use for a test.  I found that with my water pressure, I can only use 3 360 degree pop-ups and 4 180 degree pop-ups at one time.  That would mean I would need 21 separate lines to cover my whole garden.  Not very practical.

Has anyone had experience with in-ground sprinklers or know of someone that installs them to get some advice.

Thanks.

[Pompui]

Did you connect them inline or on a ring main system?

[BirdieMan]

Did you connect them inline or on a ring main system?

I connected time to the main line coming from the street.  Not sure what you mean by "ring."  Anyway, before I moved here, the people at Home Garden said they have water pressure of 3 bars.  But, I pressure gauge on the line and there is only 1 1/2 bars of pressure.    So, that is a big problem.  I think the only way I'll get a reasonable number of pop-ups on a single line is to install a water tank and pump.  Not sure I want go that route or not.  Just using a garden hose is sounding better now. 

[Isaan Lawyers]

I was on youtube this week and saw a video about sprinklers in Thailand... I was making a search about Korat!!!!!!!

It seems to have been removed:
http://www.youtube.com/watch?v=zpc707H9uQ8

It was linked to http://www.sprinklethai.com/

You might find an answer on these:

http://www.sprinkler-thai.com/
http://www.sprinklerthailand.com
http://www.sprinklerthai-dee.com/
http://www.youtube.com/user/sprinklethai#p/a/u/2/7MlUlKtmPa0

[Kundepuu]

how about using the tube that have holes... I see those in Do Home and something 1500 bath 500 m. There is several dropping values for tubes.

[Pompui]

By ring I mean a pipe in that joins back onto itself (Doesn't have to be a ring, can be square or whatever shape your sprinklers resemble).
The supply is then connected with a T piece. The reason for this is so that all sprinklers get the same pressure. If you just install sprinklers on a pipe with a dead end then the pressure will diminish as the water passes each sprinkler outlet. I have attached a crude photo to show this.
 I'm not sure about Thailand but in the UK water is supplied to homes at a pressure of approx. 14 PSI, I think.

[koratwanderer]

By ring I mean a pipe in that joins back onto itself (Doesn't have to be a ring, can be square or whatever shape your sprinklers resemble).
The supply is then connected with a T piece. The reason for this is so that all sprinklers get the same pressure. If you just install sprinklers on a pipe with a dead end then the pressure will diminish as the water passes each sprinkler outlet. I have attached a crude photo to show this.
 I'm not sure about Thailand but in the UK water is supplied to homes at a pressure of approx. 14 PSI, I think.

Mains water pressure in UK is normally 2 - 3 bar (30 - 45 PSI). Most domestic water pumps in Thailand are set at nominally 1.5 bar, i.e. switch on at 1.2 bar and switch off at 1.8 bar.

For a large garden you would probably need one of the larger pumps (250 - 300 watt) which can give up to 2.5 bar with a large (2000 litre) tank.

[Pompui]

By ring I mean a pipe in that joins back onto itself (Doesn't have to be a ring, can be square or whatever shape your sprinklers resemble).
The supply is then connected with a T piece. The reason for this is so that all sprinklers get the same pressure. If you just install sprinklers on a pipe with a dead end then the pressure will diminish as the water passes each sprinkler outlet. I have attached a crude photo to show this.
 I'm not sure about Thailand but in the UK water is supplied to homes at a pressure of approx. 14 PSI, I think.

Mains water pressure in UK is normally 2 - 3 bar (30 - 45 PSI). Most domestic water pumps in Thailand are set at nominally 1.5 bar, i.e. switch on at 1.2 bar and switch off at 1.8 bar.

For a large garden you would probably need one of the larger pumps (250 - 300 watt) which can give up to 2.5 bar with a large (2000 litre) tank.

Thanks for the correction KW. I knew there was a 4 in it somewhere.

[DUVEL]

I have a large garden and was thinking about installing in-ground sprinklers to make the watering job a little easier.  I bought a few pop-up and some pipe to use for a test.  I found that with my water pressure, I can only use 3 360 degree pop-ups and 4 180 degree pop-ups at one time.  That would mean I would need 21 separate lines to cover my whole garden.  Not very practical.

Has anyone had experience with in-ground sprinklers or know of someone that installs them to get some advice.

Thanks.

I also asked the same question in the past to  a salesman in DOHOME.

He told me that they were selling two different pop-up models in DOHOME

1)one that needs low PSI and can be connected direct to the main water supply in the street

2)and an other model that needs more PSI but can't be connected direct to the water supply from the street.
This model will have to be connected to a pump that provides higher PSI than the main water supply from the street.

So my advice: go to dohome and check if they still have the two different models.

[BirdieMan]

Thanks everyone for your input.  I'll go to Do Home again and try to find someone there that is knowledgeable about sprinklers.  Sounds like I will need a tank and pump to get the result that I want.  At my former house in Los Angeles, the water pressure from the street was 70-80 PSI so there was no problem having 8-10 popups on one line, no pump required.

[Korat-DK]

Thanks everyone for your input.  I'll go to Do Home again and try to find someone there that is knowledgeable about sprinklers.  Sounds like I will need a tank and pump to get the result that I want.  At my former house in Los Angeles, the water pressure from the street was 70-80 PSI so there was no problem having 8-10 popups on one line, no pump required.

Indeed, here too no need for pump :
http://cbs2.com/local/water.main.ruptures.2.1286433.html               

[BirdieMan]

Indeed, here too no need for pump :
http://cbs2.com/local/water.main.ruptures.2.1286433.html               

I could water my whole garden in about 5 seconds with that.   

That broken water main is about 6-7 miles from where I used to live.  It's an old part of the city and water mains are breaking around there all the time.