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matty72

  • Posts: 589
anyone tell me the best place to get a 4040
« on: April 20, 2015, 03:56:37 pm »
Any idea where the best place for a 4040 is,  i have always had a merlin need to upgrade now but want to do it cheap as poss any suggestions guys, cheers
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martinw

  • Posts: 251
Re: anyone tell me the best place to get a 4040
« Reply #1 on: April 20, 2015, 04:28:38 pm »
gaps water or vyair.
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matty72

  • Posts: 589
Re: anyone tell me the best place to get a 4040
« Reply #2 on: April 20, 2015, 05:06:31 pm »
cheers mart been to gaps will try vyair
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martinw

  • Posts: 251
Re: anyone tell me the best place to get a 4040
« Reply #3 on: April 20, 2015, 06:30:03 pm »
before you choose ro membrane check your water pressure. otherwise you will have to cough up £200-300  for a booster pump.
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Frankybadboy

  • Posts: 9024
Re: anyone tell me the best place to get a 4040
« Reply #4 on: April 20, 2015, 07:12:53 pm »
Quote from: martinw on April 20, 2015, 06:30:03 pm
before you choose ro membrane check your water pressure. otherwise you will have to cough up £200-300  for a booster pump.
why ????
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martinw

  • Posts: 251
Re: anyone tell me the best place to get a 4040
« Reply #5 on: April 20, 2015, 09:06:44 pm »
lets say he chooses low pressure membrane  which operates optimum 80-100psi, his tap pressure is 30-40psi during demand hours, membrane will not produce good hourly quantity of water with low enough  tds. more resin will be used.
the disappointment may and will occur. 
 with booster pump 200l/hr + is achievable with single digit tds prolonging resin life.
hf5 type will work with tap  pressure of 40 psi above without booster pump but tds will be slightly higher and will produce more  water than  4040.
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