[AuRavelling79]

The one from grippa is everything you need , first vessel is is carbon sediment and lasts 350000 liters , second is 21 inch ro and it comes with waste valve etc .

Just tap water in one end and out to your di vessel the other .

Will produce around 150 liters per hour .

Very easy to set up , all John guest fittings .

Thanks again folks:

I think this one looks the right one for me. I like the "Very easy to set up ..." the "150L per hour" and the fact that the recommended inlet pressure is 50psi to 100 psi. I have emailed grippatank some more damnfool specific questions and will report back how it all goes.

[Don Kee]

If you've actually got 80psi mains pressure (I'd be chuffing surprised if you have) then get a HF4 membrane Gold

HF5 is a low pressure membrane, meaning it needs good flow over big pressure. Works well but TDS will usually be higher than the HF4

HF4 is high pressure membrane, need 60psi+ but cheaper to replace and will get lower TDS

The one I got from Daqua was the HF5 as I've got low mains pressure and am too tight to buy a booster pump 

(That was plug in and go as well by the way, and cheaper than Grippa, although you cant go wrong with the Grippa R.O)


The 150litres per hour is dependant on variables, but you should get that with most 40/40's irrelevant of where you buy it from (the membranes are the same as long as you buy it from a 'main' supplier, its the bells and whistles that differ)

The Gate valve you get adjusts your waste/pure ratio and therefore adjusts your TDS and pure flow

If you fancy a trip over to Keynsham then myself or Frank have 4040's if you want a cheeky

[AuRavelling79]

If you've actually got 80psi mains pressure (I'd be chuffing surprised if you have) then get a HF4 membrane Gold

HF5 is a low pressure membrane, meaning it needs good flow over big pressure. Works well but TDS will usually be higher than the HF4

HF4 is high pressure membrane, need 60psi+ but cheaper to replace and will get lower TDS

The one I got from Daqua was the HF5 as I've got low mains pressure and am too tight to buy a booster pump 

(That was plug in and go as well by the way, and cheaper than Grippa, although you cant go wrong with the Grippa R.O)


The 150litres per hour is dependant on variables, but you should get that with most 40/40's irrelevant of where you buy it from (the membranes are the same as long as you buy it from a 'main' supplier, its the bells and whistles that differ)

The Gate valve you get adjusts your waste/pure ratio and therefore adjusts your TDS and pure flow

If you fancy a trip over to Keynsham then myself or Frank have 4040's if you want a cheeky

Well I'm going by the gauge on the side of my R/O ...

[Don Kee]

The problem with that is you'll be getting a pressure reading after the water has pushed through 1/4" tubing, filters and flow restrictor (maybe)

Is 80psi what you get when your R.O is flushing, or producing?

(Sorry, didnt mean to come across as saying your lying, just 80psi is massive mains pressure l! The norm is 30-50)

[AuRavelling79]

The problem with that is you'll be getting a pressure reading after the water has pushed through 1/4" tubing, filters and flow restrictor (maybe)

Is 80psi what you get when your R.O is flushing, or producing?

(Sorry, didnt mean to come across as saying your lying, just 80psi is massive mains pressure l! The norm is 30-50)

No, I didn't take it that way at all. The 80psi is when it's producing and you are quite right it is measured at the entry point of the RO so the water has been reduced to quarter inch pipe but it is before the filters and restrictors.

When I stick my pole straight on my tap to do my conny roof the pressure seems about the same as my van pump.

You've got me worried now ... 

[AuRavelling79]

I've just gone on Bristol Water's website and they say that the minimum they provide pressure wise from a downstairs tap would fill a 4.5L (1 gallon) container in 30 seconds. They say there is no maximum specified.

I've just tested ours and it gives 4.5 litres in 15 seconds. So that's twice the minimum.

[Don Kee]

Theres a difference between water flow(amount of water per time period) and pressure (the force the water moves)

Stick a hose pipe on your out door tap
Turn it on full whack and water flows out
Pinch the end and the water then jets out
Same amount of water leaving the tap, different pressure...


I feel I've got into unintentional tiff here, was just trying to help   

I turned on my R.O on flush the other week and my water pressure was higher than normal
'Great' i'm thinking, better pressure!
Turns out I'd accidentally put a kink in my waste pipe which was creating back pressure, which is a whole other subject!!! 

(Added after - missedyour first post, only read the second! Glad I'm not coming accross as arguing!! By the sounds of it, you've got decent pressure, maybe not 80psi but I reckon the HF4 would still be better for you in the long run if the pressure is as good as you think) 

[AuRavelling79]

Thanks Don Kee - I'm not arguing at all - I'm taking it all in and am very grateful for your (and every one else's help).

Thanks.

Some thinking to do.

[robert mitchell]

I bought this one a while back Gold -

http://www.daqua.co.uk/ro_systems.htm
(Second one down)

Slightly cheaper than the one posted above, reputable seller, and its everything you need to go (bar a D.I vessel)

The one i linked to is a 4021 rather than a 4040 and has a second 4021 housing for the carbon filter so less filter changes than the 2 10 inch housings ......in fact the capacity of the carbon/sediment filter would be enough for my whole years worth of water , i am only doing about 3 days a week though .

[robert mitchell]

https://www.grippatank.co.uk/ez-pure-single-use-sediment-carbon-insert

The link above is to the carbon /sediment filter from grippa with a life of 350000 litres .  £41 including vat

The link below is the 10inch fibredyne with a life of 37500 litres. £14.40 including vat you would need 9.33 of these to get the same capacity at a cost of £134.40 ......quite a saving !

http://gardinerpolesystems.co.uk/all-products/pure-water-systems/water-treatment/sediment-carbon-filters/fibredyne-cfb-plus-sediment-carbon-pre-filter-10.html

[andyM]

https://www.grippatank.co.uk/ez-pure-single-use-sediment-carbon-insert

The link above is to the carbon /sediment filter from grippa with a life of 350000 litres .  £41 including vat

The link below is the 10inch fibredyne with a life of 37500 litres. £14.40 including vat you would need 9.33 of these to get the same capacity at a cost of £134.40 ......quite a saving !

http://gardinerpolesystems.co.uk/all-products/pure-water-systems/water-treatment/sediment-carbon-filters/fibredyne-cfb-plus-sediment-carbon-pre-filter-10.html

Yeah but.......the EZ filter is recommended to be changed at 350000 litres OR every 6 months (whichever is sooner).
But if you use a single 10" Fibredyne filter at around £15 inc vat a pop you could change the filter every 3 months which would work out less than £60 per annum.
Just sayin'.......

[robert mitchell]

https://www.grippatank.co.uk/ez-pure-single-use-sediment-carbon-insert

The link above is to the carbon /sediment filter from grippa with a life of 350000 litres .  £41 including vat

The link below is the 10inch fibredyne with a life of 37500 litres. £14.40 including vat you would need 9.33 of these to get the same capacity at a cost of £134.40 ......quite a saving !

http://gardinerpolesystems.co.uk/all-products/pure-water-systems/water-treatment/sediment-carbon-filters/fibredyne-cfb-plus-sediment-carbon-pre-filter-10.html

Yeah but.......the EZ filter is recommended to be changed at 350000 litres OR every 6 months (whichever is sooner).
But if you use a single 10" Fibredyne filter at around £15 inc vat a pop you could change the filter every 3 months which would work out less than £60 per annum.
Just sayin'.......

yes you could , for me its more that i cant be arsed changing the filters as often .......im guessing the 6monthly change is for it getting blocked with sediment from your water so as long as i still get good pressure after the carbon/sediment filter i will leave it in for the year.