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gewindows

R.O. 4040
« on: January 16, 2013, 07:03:55 pm »
HF4 or HF5?

How does one compare to the other regarding performance?

gewindows

Re: R.O. 4040
« Reply #1 on: January 17, 2013, 01:17:41 pm »
Anyone?

SPE

Re: R.O. 4040
« Reply #2 on: January 17, 2013, 01:27:03 pm »
HF4 produces slightly less water than HF5 but at a slightly higher level of purity.

concept

  • Posts: 1049
Re: R.O. 4040
« Reply #3 on: January 17, 2013, 01:32:50 pm »
Can't remember which, but one also works better with low pressure.

Ring June at GAPS. Her knowledge is second to none.

gewindows

Re: R.O. 4040
« Reply #4 on: January 17, 2013, 01:33:44 pm »
I spoke to her, but wanted hands on opinions.

concept

  • Posts: 1049

SPE

Re: R.O. 4040
« Reply #6 on: January 17, 2013, 01:41:14 pm »
Its the HF5 that works better on the low pressure.
I have just fitted a new 4040 membrane and booster pump from VYAIR this morning (flushing it as I type this)
Its one of these
http://www.vyair.com/scripts/prodView.asp?idproduct=190
I previously had an HF5 but running it on low pressure unpumped had shortened its life (2 years).
The VYAIR membrane is supposed to be similar in performance to the HF4.
I will be able to let you know soon how it compares to my HF5.
Simon  ;)