[mark mids]

Hi fellas

been waitin in all morning for my Merlin to arrive from Gaps Water, opened it and its made by pentair water PRF RO is this the same as the merlin?

Cheers

[Nathanael Jones]

post a photo of it,...

[Spruce]

I see new for 2013 is a new AK low pressure membrane with a 99.5% rejection rate at 7.9 bar.

The current Merlin is advertised with a 90% rejection rate.

Oh - forgot the price.
AK90 - 347 LPH    -   £410.00
AK365 - 1450 LPH -  £1285.00
AK400 - 1650 LPH -   £1300.00

I presume that the new Merlin will take a single membrane - but if it doesn't?

[thermoclean]

The merlin has been discontinued and this is the replacement.

[mark mids]

yeah, June at Gaps Water Emailed me and told me its the new Merlin PRF,  apparently i got a good deal as these one are more expensive than the old version, which i thought i was getting, she did not know that it had changed so i got it a the old price   my tap water is 187 TDS and its coming out 9 TDS after RO.

[Carl@Cwc]

june at gaps knows her stuff m8

thats a really good percentage after ro by the way...
should save u a bundle in resin....

hows business m8, i know u are not far away from us.....

[mark mids]

yeah things are starting to look up Carl now im WFP but could do with some bigger jobs if im honest, but now the weathers here gonna go canvassing cheers for asking anyhow 

[david wood]

iam just about to buy a 4040 this week from pure freedom would a new merlin be better and cheaper ?

[Spruce]

iam just about to buy a 4040 this week from pure freedom would a new merlin be better and cheaper ?

If the price of the replacement membranes are £410.00 (I presume a pair) then I would also factor this into your calculation.  Also an output of 9 to 187 that Mark says he is getting is not that good. It means it has an efficiency of 95%. I understand the HF4 & HF5 membranes do better than that. But it may improve with time as the unit settles down.

However, we don't know much about Mark's water pressure and flow and really the only true way of comparing one with another TDS wise is 'side by side'. Of course currently, the 40/40 will produce more water than a Merlin as its a bigger unit.

It would be good to see a picture of it as Nat has asked as their website doesn't appear to have been updated.

Spruce

Spruce

[Nathanael Jones]

Merlins are rubbish unless you've brilliant water pressure and no water meter,.. otherwise they waste a lot (1 part pure to 4 parts waste in my experience) and the TDS out at low pressure is dismal.

Lets hope the replacement system is better,..

[dd]

I see new for 2013 is a new AK low pressure membrane with a 99.5% rejection rate at 7.9 bar.

The current Merlin is advertised with a 90% rejection rate.

Oh - forgot the price.
AK90 - 347 LPH    -   £410.00
AK365 - 1450 LPH -  £1285.00
AK400 - 1650 LPH -   £1300.00

I presume that the new Merlin will take a single membrane - but if it doesn't?

7.9 bar is very high water pressure!

[Spruce]

I see new for 2013 is a new AK low pressure membrane with a 99.5% rejection rate at 7.9 bar.

The current Merlin is advertised with a 90% rejection rate.

Oh - forgot the price.
AK90 - 347 LPH    -   £410.00
AK365 - 1450 LPH -  £1285.00
AK400 - 1650 LPH -   £1300.00

I presume that the new Merlin will take a single membrane - but if it doesn't?

7.9 bar is very high water pressure!

+- 110 psi

[thermoclean]

You can get a pair of merlin membranes for around £150
Don't know if you can still get them but gaps did a flexi filter system based on the merlin 17" ro where u could add membrane modules my mate had one with six membranes in series it is fasted flowing ro I've ever seen.

[mark mids]

My new Merlin is one of these http://www.clear-tech.co.uk/reverse-osmosis/pentair-prf-ro-system.html

my water presure is 39 psi

my TDS after RO now is 7

my tap TDS is still 187

im filling a 25 litre tub in 22 mins

hope this helps

[Spruce]

You can get a pair of merlin membranes for around £150
Don't know if you can still get them but gaps did a flexi filter system based on the merlin 17" ro where u could add membrane modules my mate had one with six membranes in series it is fasted flowing ro I've ever seen.

Those are the current membranes - it would appear the new AK ones are much more expensive.

[thermoclean]

I wonder if the old 17" style would fit the new setup as I've heard replacements will available for 5 years after merlin discontinued