[SPE]

I've sat on the fence deciding so long as to whether to get booster pump or not and how much to spend.
I have an hf5 4040

what pressure do others achieve with a booster pump ?
I currently get about 50 psi without.
There are a lot of pumps out there, I know about the clarkes ones that gaps recommend but they are a bit pricey, is cheaper a false economy ?
e.g. this one
http://www.ebay.co.uk/itm/D-D-Booster-Pump-RO-Unit-/170675886194?pt=UK_Pet_Supplies_Fish&hash=item27bd135872
or even this one rated at 80 psi
http://www.ebay.co.uk/itm/REVERSE-OSMOSIS-BOOSTER-PUMP-/260774775888?pt=UK_Pet_Supplies_Fish&hash=item3cb7634c50

whats the most important factors in choosing one , the psi, flow in ltrs per min ?
I'm confused and dont want to spend more than I have to

thanks
Simon

[mikecam]

I've sat on the fence deciding so long as to whether to get booster pump or not and how much to spend.
I have an hf5 4040

what pressure do others achieve with a booster pump ?
I currently get about 50 psi without.
There are a lot of pumps out there, I know about the clarkes ones that gaps recommend but they are a bit pricey, is cheaper a false economy ?
e.g. this one
http://www.ebay.co.uk/itm/D-D-Booster-Pump-RO-Unit-/170675886194?pt=UK_Pet_Supplies_Fish&hash=item27bd135872
or even this one rated at 80 psi
http://www.ebay.co.uk/itm/REVERSE-OSMOSIS-BOOSTER-PUMP-/260774775888?pt=UK_Pet_Supplies_Fish&hash=item3cb7634c50

whats the most important factors in choosing one , the psi, flow in ltrs per min ?
I'm confused and dont want to spend more than I have to

thanks
Simon

Neither of them are any good for your 40 40 membrane.
I'm running one of these now, gauges showing 80/90 psi

http://www.machinemart.co.uk/shop/product/details/051012200/path/booster-centrifugal-pumps

[SPE]

thankyou for the reply mike, I thought as much but wanted to ask here to be sure.
The pump your'e using from machine mart seems a better priced option than the one gaps and others have suggested before
http://www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pump/path/booster-centrifugal-pumps
does the max lpm alter the pressure I could expect by much ? the one I link to above is 101 lpm whilst the one you have is 61 lpm.
thanks
Simon

[mikecam]

thankyou for the reply mike, I thought as much but wanted to ask here to be sure.
The pump your'e using from machine mart seems a better priced option than the one gaps and others have suggested before
http://www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pump/path/booster-centrifugal-pumps
does the max lpm alter the pressure I could expect by much ? the one I link to above is 101 lpm whilst the one you have is 61 lpm.
thanks
Simon

I'm not brill at explaining it, but them ones you linked to are very slow flow (although high pressure). All that will happen is they will slowly fill up the membrane and pre filters and still only trickle out as there is not enough water flow for the size of your membrane. You will need a substantial water flow in a 4040 to take the contaminants away.
 I see one of the pumps you linked as having 1.2 lires per min flow rate, and couldn;t see a flow rate listed for the other one. I'd guess its a similar rate. To achieve flow rates of 101 lpm you need either/or/and  wide bore pipes and very high pressure.

[SPE]

sorry mike think I've confused you now, this link(I've ruled out the previous ebay offerings)
http://www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pump/path/booster-centrifugal-pumps
is a higher spec than yours, almost twice the price with 101 lpm compared to your 61 lpm and was recommended by gaps for the hf5 however I've dithered over buying it because I was put off by the price.
The one you are suggesting is within my budget and I have a machine mart at the bottom of my street.
If I knew what pressure you were running before fitting the booster pump it may help me in my descision?
Thanks
Simon

[mikecam]

sorry mike think I've confused you now, this link(I've ruled out the previous ebay offerings)
http://www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pump/path/booster-centrifugal-pumps
is a higher spec than yours, almost twice the price with 101 lpm compared to your 61 lpm and was recommended by gaps for the hf5 however I've dithered over buying it because I was put off by the price.
The one you are suggesting is within my budget and I have a machine mart at the bottom of my street.
If I knew what pressure you were running before fitting the booster pump it may help me in my descision?
Thanks
Simon

Machinemart site is down now for maintainance now so i can't check exact specs....
Although i'm saying a higher flow is better, there is only so much flow you can actually get through your membrane. In my experience most taps will not produce much more than roughly 6 litres per min, and for most membranes (4040) this is about what they can handle, don;t forget they do have a GPD rating, which equates to a certain amount they can proccess a minute/ hour or whatever. So whilst that other more expensive machine mart is certainly a great pump, there is no way you are going to get 101 litres per min, or even 61 litres per min though your membranes.
 Without a booster, i fill the tanks at two locations, either 40 PSI or 50PSI.

[SPE]

thankyou for the helpful advice, going to go with the one you have, good price ! shall be setting it up this weekend
thanks again
Simon

[Roy Harding]

http://www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pump/path/booster-centrifugal-pumps

I have this one with my h5 40 x 40, and it pushes the water trough at over 110psi as the needle on my gauges on go that far.

Roy

[SPE]

http://www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pump/path/booster-centrifugal-pumps

I have this one with my h5 40 x 40, and it pushes the water trough at over 110psi as the needle on my gauges on go that far.

Roy

Hi Roy, thanks, thats the one I linked to as well, its pretty much twice the price of the one mike is using
not sure I want to go to that exspense myself but now you've mentioned it what tds is your supply and it produce ? and how long would you take to fill a 650ltr tank ?

same question to you mike

no two set ups are the same I know, but this could be the help I need in deciding

Thanks
Simon

[Roy Harding]

http://www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pump/path/booster-centrifugal-pumps

I have this one with my h5 40 x 40, and it pushes the water trough at over 110psi as the needle on my gauges on go that far.

Roy

Hi Roy, thanks, thats the one I linked to as well, its pretty much twice the price of the one mike is using
not sure I want to go to that exspense myself but now you've mentioned it what tds is your supply and it produce ? and how long would you take to fill a 650ltr tank ?

same question to you mike

no two set ups are the same I know, but this could be the help I need in deciding

Thanks
Simon

My Tds is 234 and out ro 7ppm. To fill 650 ltrs about 1 3/4 hours.

Roy

[SPE]

http://www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pump/path/booster-centrifugal-pumps

I have this one with my h5 40 x 40, and it pushes the water trough at over 110psi as the needle on my gauges on go that far.

Roy

Hi Roy, thanks, thats the one I linked to as well, its pretty much twice the price of the one mike is using
not sure I want to go to that exspense myself but now you've mentioned it what tds is your supply and it produce ? and how long would you take to fill a 650ltr tank ?

same question to you mike

no two set ups are the same I know, but this could be the help I need in deciding

Thanks
Simon

My Tds is 234 and out ro 7ppm. To fill 650 ltrs about 1 3/4 hours.

Roy

alrighty, thanks  
my tds is not far off yours (about 250) takes me just over 3 hours to fill the same unpumped at about 50 -  60 psi currently probably get 10-12 ppm after ro, thanks for the input  
Simon

[mac74]

Hi simon i went for this one -  Clarke CBM240E 1" Multi Stage 230V Booster Pump @ £299 it detects a dry flow and shuts it down to protect pump, which is ideal for a water timer. B4 booster my readings = 40" RO, tap tds 420ppm, @ 38 psi OUT 20ppm - With booster - same 420 tds but now @ 80psi = 12ppm and makes 200l per hour.

[richard jagger]

If I remember rite if you draw off more than 12 litres per min using a household tap you would stand a very good chance of the pipes collapsing. As far as I know this is against the law.