[richywilts]

think my ro has finally given up need somewhere asap to buy a replacement ro 4040 filter please

[deeege]

Daqua

[SeanK]

Sureclean in Omagh N.Ireland.
4040 membrane £198+vat and free delivery.

[richywilts]

cheers

can anyone tell me what the difference is between the hf4 and the hf5 its to go on to an ionic system which i use as a static system

http://www.daqua.co.uk/reverseosmosis.htm

thanks

[Lee GLS]

As a general rule, HF4 with booster pump, HF5 if running on just tap pressure

[richywilts]

nice one lee i run with a booster pump means i get the cheaper option

[Avo]

Gaps water..

Hf4 with booster pump gives better rejection rates at 99% than hf5 98%

Hf5 off the tap gives better rejection and product water than hf4 and that's it really :-)

Ring June at gaps.

[richywilts]

Hf4 with booster pump gives better rejection rates at 99% than hf5 98%

Hf5 off the tap gives better rejection and product water than hf4 and that's it really :-)


sorry not quite with u when u say 99% rejection rate is that 1% waste water

[andyM]

I don't get 99% rejection from my Hf4 and never have.
Mines probably 97% but that's still very acceptable.

[Avo]

The rejection rates means the performance of the filters and how many dissolvable parts it strips from the waters Tds

Look on gaps water it explains everything on there I think

[Perfect Windows]

I don't get 99% rejection from my Hf4 and never have.
Mines probably 97% but that's still very acceptable.

Franchisees' rejection rates with HF4 and booster are 97% - 98%

Richy, rejection rate is % of impurities removed, not waste ratio.  So, mine takes water from 300ppm to 6ppm. (300-6) = 294.  294/300 = 98%.  Waste ratio is completely different.

Vin

[Avo]

If your running from the tap it's hf5 for you.

[richywilts]

i think my water is about 210 ish what would you expect that to take it down too using hf4 with booster pump

also whats the general lifespan of these filters thanks

[SeanK]

My tap water is about 220, when new my 4040 took it down to 2ppm its now going on 6 years old and still gets
the water to 20ppm.
Not bad considering I rarely change the pre filters.

[richywilts]

ive had bad luck with ro filters in the past but it could be the higher usage maybe when i had a larger round

[lal]

I don't get 99% rejection from my Hf4 and never have.
Mines probably 97% but that's still very acceptable.

Franchisees' rejection rates with HF4 and booster are 97% - 98%

Richy, rejection rate is % of impurities removed, not waste ratio.  So, mine takes water from 300ppm to 6ppm. (300-6) = 294.  294/300 = 98%.  Waste ratio is completely different.

Vin

Thanks Vin, I didn't  know what rejection rate was either, you explained in simple easy to understand language, good post.

Best regards
Lal

[Flash..]

I don't get 99% rejection from my Hf4 and never have.
Mines probably 97% but that's still very acceptable.

Franchisees' rejection rates with HF4 and booster are 97% - 98%

Richy, rejection rate is % of impurities removed, not waste ratio.  So, mine takes water from 300ppm to 6ppm. (300-6) = 294.  294/300 = 98%.  Waste ratio is completely different.

Vin

Thanks for the explanation I never realised that was what rejection rate meant either

[windiewasher]

Richy try Vyair.They done me a good deal that beat anything out of sight.
Also see Jim Burford is doing them cheap aswell.

[Stephen Fox]

Most tap water pressure is well below what a HF5 considers 'low pressure'. HF5 perform well for a while (better than a HF4) but tend to block up a lot faster. You will get a longer life from HF4 if looked after.

[CleanClear]

Most tap water pressure is well below what a HF5 considers 'low pressure'.

+1.