N4712
Guru
- Joined
- Apr 22, 2013
- Messages
- 3,607
- Location
- U.S.A
- Vessel Name
- Oliver
- Vessel Make
- Nordhavn 47 Hull# 12
Anybody ever use these before? http://www.amazon.com/gp/product/B0018N0WT2/ref=ox_sc_act_title_2?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
Just to be clear on your boat right? And how hot does it get, because I would think that would mess up our fridge ice maker.I have a few similar filters of varying sizes 3/4" through 2" IPS, most manufactured by Cuno. They work as advertised but have found the water needs to circulate when they are on. At least in the larger sizes as they tend to heat the water trapped in them when not flowing. Most of mine are installed in deionized water purification systems. No idea what the advertised lamp life is but have a 2" IPS 60 GPM model with 6 lamps equipped with a Hobbs meter. The last time I looked it had about 17,000 hours on it and no lamp failure yet. The units are completely maintenance free. Replacement lamps are spendy but I haven't had to replace one yet.
Were looking to have clean enough water for ice making. I know they kill bacteria, I'm thinking of putting filters before it.UV is not filtration but simply a means of rendering pre-filtered water as safe as possible by nuking bacteria. It has limited effect against viruses and pathogens. What/why do you want to use it? Plenty of qualified people who can give you good advice if we know what you are trying to achieve.
No idea what the advertised lamp life is but have a 2" IPS 60 GPM model with 6 lamps equipped with a Hobbs meter. The last time I looked it had about 17,000 hours on it and no lamp failure yet. The units are completely maintenance free.
Replacement lamps are spendy but I haven't had to replace one yet.
Just to be clear on your boat right? And how hot does it get, because I would think that would mess up our fridge ice maker.
Most UV light s have an 8-10,000 hour life span, after that point they still light but the UV output has diminished to the point of being ineffective. I generally change mine out on a yearly basis. YMMV http://www.himnrbehs.com/himnrbehs/pdf/Facts.About.Ultra.Violet.pdf http://www.ultravation.com/replacement-filters-lamps/
Best to use an activated carbon filter, it removes residual chlorine and odours.Were looking to have clean enough water for ice making. I know they kill bacteria, I'm thinking of putting filters before it.
Make sure you size it for your fw pump's max flow rate and your inverter/battery capacity before you order one. For clear ice you need to go ro unless you are going to filter down to 1 micron. Carbon filtration is to remove scents and flavors and won't do squat to any bacteria that can ruin someone's trip.Were looking to have clean enough water for ice making. I know they kill bacteria, I'm thinking of putting filters before it.
Yeah I made sure. Bit haven't ordered one yet.Make sure you size it for your fw pump's max flow rate and your inverter/battery capacity before you order one. For clear ice you need to go ro unless you are going to filter down to 1 micron. Carbon filtration is to remove scents and flavors and won't do squat to any bacteria that can ruin someone's trip. Via iPad using Trawler
If using second pass RO water (Purer than 20ppm) then you must add a mineral or any metals in your ice machine will corrode very rapidly.
Anybody ever use these before? Watts 270154 8-GPM 3/4-Inch 110-Volt UV Disinfection System - Amazon.com
Sorry, too far away from you to show copper reticulation full of holes. High purity RO water is demineralised, any mineral based reticulation it passes through will naturally want to "give up" minerals to it. Demineralised water is very corrosive, ask anyone involved in RO water treatment. The usual minerals added to protect reticulation are calcium carbonate or calcium chloride, injected via precision dosing pumps.Really? Like to see some evidence of that.
How does one "add a mineral" and what mineral does one add?
Sorry, too far away from you to show copper reticulation full of holes. High purity RO water is demineralised, any mineral based reticulation it passes through will naturally want to "give up" minerals to it. Demineralised water is very corrosive, ask anyone involved in RO water treatment. The usual minerals added to protect reticulation are calcium carbonate or calcium chloride, injected via precision dosing pumps.
I was assuming low pressure RO for secondary treatment, hence my stipulation of <20 ppm. I believe these low pressure systems are very common in the US.You're talking about RO water that has little or no TDS. The RO systems on our boat (s) usually run around 200-250 ppm. Not a problem for the plumbing or ice makers.
I was assuming low pressure RO for secondary treatment, hence my stipulation of <20 ppm.
No idea what the advertised lamp life is but have a 2" IPS 60 GPM model with 6 lamps equipped with a Hobbs meter. The last time I looked it had about 17,000 hours on it and no lamp failure yet.
Here are some random snapshots of a reverse osmosis, UV purifier equipped deionized water system in our newest laboratory. The two 4' tall RO membranes (as are most of the maintenance points) are hidden behind the equipment. I stretched my arm to get a shot of the UV purifier. You will notice the extensive use of schedule 80 and PEX tubing. Not to be missed is the stainless steel piping coming into and out of the stainless steel purifier. This system makes and stores deionized water for lab use. The tank is for storage and it is constantly circulated in a loop through the building. It passes through the UV filter prior to going to the building for use. This is laboratory stuff and hardly applicable to Oliver but thought some might enjoy seeing it anyway.[/QUOTEIi don't care, I find this kind of stuff interesting.