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Home water filters
Latest from Hydrotech
Quick-Change RO
Product detail
Last edit on: 1/31/24
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Reverse osmosis filter, home water filter, whole house water filter
Water in the Garden of Eden You Had Imagined
is Actually the Water You Will Experience at Home
Point of use (POU) reverse osmosis drinking water filters
Free consultation, 40 years of experience
Page Index
Price levels, post sale support, warranty, policy
- Selection of best makes/models delivering lasting value
- Factory direct delivery, industry-best customer service, bar none
- Professional, courteous and free maintenance consultations for the life of the unit
- Our prices may not be the lowest on the net, but your peace of mind is priceless
- Prosperity Management, Inc. is not responsibile for on-site installation, operation, maintenance, water leaks, stoppages or damages thereof, review disclaimer
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"I was frankly surprised when you called back Saturday evening, helped diagnose our problem right then.
We got our filtered water back by mid-week with replacements. You guys are super. Keep up the good work!" George Hennish, Fredericksburg, VA, July 26, 2002 |
Reverse Osmosis Process - What does it achieve?
Reverse osmosis is a process in which the incoming (dirty) water is forced through a multi-layered cellophane-like RO membrane under elevated pressure.
The hole size in an RO membrane is less than 0.0001 microns (1 Angstrohms).
Water (H2O) happens to be nature's smallest liquid molecule at room temperature and it passes through the minutest holes in the membrane, likewise oxygen (O2) which is equally small. While distilled water lacks oxygen, RO water is alive with O2, hence is suitable for aquarium use. All other larger elements and molecules are stopped. The dirty water left behind is drained off at a constant rate set by a waste flow control www.ce, such that it does not get excessively dirty.
Two types of RO membranes - Thin Film Composite (TFC) and Chlorine Tolerant Acetate (CTA). TFC membrane lasts longer than CTA but cannot take chlorine. If source water is chlorinated, TFC follows a carbon pre-filter which removes chlorine.
Reference on reverse osmosis
filter - from HowStuffWorks
Reverse Osmosis (RO) removes substantial amounts of most foreign substance in water other than oxygen. Mechanical filters and activated carbon filters almost always accompany RO membrane. First, the mechanical filter (1) removes dirt, sediment, rusts, and such that would otherwise clog the membrane. The RO (2) filter is next. Pressurized water storage container (3) holds RO water. Activated carbon filter (4) further reduces foreign matters that pass though the membrane. Separate water tap (5) dispenses the processed water. Reverse Osmosis uses large amounts of water. Typically, about 75% or more gets discarded together with the contaminants.
Source water quality requirements - not that strict for drinking water RO filter
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Water temp: 85F max
- TDS: 2,000 ppm max
- Iron tolerance: 0.5 ppm max
- Hydrogen sulfide: must be removed
- Silica tolerance: less than 125 ppm, antiscalant should be considered for over 75 ppm
- Turbidity: must be removed
- Hardness: over 10 gpg should be softened
- pH range: 3-11
Water quality outside the above range will shorten the natural life of a membrane, large and small. Hence, source water is pretreated for large production RO systems where membranes are expensive and numerous. In contrast, it is seldom necessary to pretreat in smaller drinking/cooking RO models listed below with a production rate of, say, 100 GPD or less. The reason is that waste water is drained at 2-4 times the volume of RO water so that the membrane chamber is kept relatively clean. This kind of water wastage is not practical in large GPD RO systems.
GPD (gallons per day) rating of a membrane is defined at 77 degrees Fahrenheit, 25 degrees Celcius, and at 60 psi differencial pressure between the source and permeate water. At lower source water temperatures, however, RO production decreases and the GPD rating has to be divided by a "derating factor" of 1.19 at 68F (20C), by 1.47 at 59F (15C), by 1.89 at 50F (10C), by 2.58 at 41F (5C). Pressure effect is less noticeable down to 45 psi or so, but production will drop precipitously below 40 psi. You need a booster pump then.
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Which impurities does an RO system reduce?
Sediment filter vastly reduces dirt, sand, rust particles and other sediments
Activated carbon is for aesthetic chlorine, odor and taste, nice compact reference: Home Water Purifiers & Filters
Reduction ratio table shows the percentage of the water borne substances reduced by a typical RO process
Under the sink RO system is equipped with auomatic shut-off valve. It senses when RO water storage tank is full, and shuts off the RO process. Water therefore is not wasted.
How to test the purity of water? - pocket TDS monitor
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TDS (totally dissolved solids) is a major indicator of water purity
Some are positively charged ions: Fe++, Cu++, Pb++, Ca++, Na+, Mg++, Ra++, Ba++
Some are negatively charged ions: OH-, CO3-, Cl-, HCO3-, SO4--, HSiO3-
TDS monitor measures electrical conductivity due to all these current carrying ions
Higher the TDS reading in parts per million, dirtier the water
Change the RO membrane when the TDS value is high, say 200 or more
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Why you may want to buy from us? - we save you from king size headaches and hassles
Hundreds of companies selling RO systems, from expensive to cheap, name brands to no-names
If not maintained regularly and properly, an RO unit quickly turns into a useless piece of junk
Almost every week we are rescuing orphaned owners and equipment abandoned by the original sellers
Free post sale support at installation, operation and maintenance will help keep the water tasting as day one
List only the makes/models delivering lasting value, price may not be the lowest but you get peace of mind
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Under-the-Sink RO Systems - pure, delicious and safe water gushes out 24/7
Are you designing a new kitchen? Or remodeling the old one? One of these is a must feature!
Who needs it and why?
Any home owner under the sun, especially those who now buy bottled water
Getting RO water is as easy as opening the carton and doing simple plumbing
Clean, delicious and economical drinking/cooking water 24 hours right in your kitchen, also feeds water chiller and icemaker
Costs less than bottled water in a year or two, gets progressively less since you only replace apent cartridges
When you buy from us
Maximum cost saving since individually tested unit comes to you factory direct
Free post-sale installation/maintenance support with diagrams, written instructions and live on-site phone assistance
Free, cordial and professional maintenance reminders for the life of the unit
Resist buying the cheapest on the net, it won't last, you generally get what you pay for
5 stage filtration under the counter with 3.2 gallon tank
Works with chlorinated city water or individual well waterNo electricity needed if source water has 40 psi or more, if less, add booster pump
Don't walk away, filtered water gushes out of the faucet, we use 3/8" tubing (not 1/4") in the delivery path
Standard 3.2 gallon tank is 11" diam, 14" high, and RO unit is 14" w, 7" d, 16" h for both models below
You can install if you are handy, plumber in about 3 hours, we provide diagrams/live phone assistance
FSHS Champion5 RO
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Champion 5 from FSHS
Our FY'12 sales broke all our records since 1984, this is a thank you
Special sale price $399 for 50 GPD unit, plus freight
Best quality water, to maintain replace the sediment every six months, pre- and post-carbons every year, and the membrane should last 2-5 years
Industry standard design, replacement parts available from a dozen different manufacturers
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Available options - please call us toll free 888-928-3794 within US, 978-456-8372 from outside US
Amtrol 14 gal tank (in addition to the 3.2 gal) available, 16" diameter x 23" tall, 24 lbs empty
Amtrol 20 gal tank (in addition to the 3.2 gal) available, 22" diameter x 30" tall, 61 lbs empty
Amtrol 44 gal tank (in addition to the 3.2 gal) available, 26" diameter x 48" tall, 123 lbs empty
Chrome faucet standard, extra for designer colors, almond, black, gray, red, white, or stainless
UV stage add-on available, 120V/50-60Hz, 200-220V/50-60Hz, easily added at home
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Hydrotech-Canature Quick-Change RO, 4 stage undersink - brand new introduction!
Hydrotech Quick-Change RO
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Latest innovation, cartridge change is tilt up and twist out
Current price $636 plus freight for 50 GPD (gallong per day) unit
Streamlined space age look, RO unit 14-1/2" wide, 4-1/2" deep, 13-1/2" high
3.2 gallon capacity tank 11" diameter x 14" tall, 2.6 gal effective draw
Well water or chlorinated city water, no electricity required
Water Quality Association Gold Seal ?ENSF/ANSI 58 Certified
Sediment, block pre-carbon, TFC RO membrane, granular powder post carbon
You can tee off to multiple faucets, ice maker, water chiller
Water intake and waste 1/4" tubing, pure water delivery to faucet 3/8"
We offer free post-sale support, additional material, live phone assistance
Replace sediment and pre-carbon every 1-2 years, membrane and post carbon
often last 3-5 years
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Available options - please call us toll free 888-928-3794 within US, 978-456-8372 from outside US
Amtrol 14 gal tank (in addition to the 3.2 gal) available, 16" diameter x 23" tall, 24 lbs empty
Amtrol 20 gal tank (in addition to the 3.2 gal) available, 22" diameter x 30" tall, 61 lbs empty
Amtrol 44 gal tank (in addition to the 3.2 gal) available, 26" diameter x 48" tall, 123 lbs empty
Chrome faucet standard, extra for designer colors, almond, black, gray, red, white, or stainless
UV stage add-on available, 120V/50-60Hz, 200-220V/50-60Hz, easily added at home
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Hydrotech-Canature QC-RO, 4 stage undersink with booster pump - for less than 40 psi source water
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Culligan QC 4-stage RO
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Kemflo booster pump kit
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Integration of Kemflo booster pump to QC-RO is literally a snap!
Consists of pump, tank pressure switch and 120 volts 50/60 hz transformer
Pump adds pressure to supply water, tank switch shuts it off when tank is full
Anyone can assemble, tubing and coupling supplied, pump can be anywhere near or far
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| Countertop Filters
Small, convenient, effective, you might even travel with it if you are handy | 
Diverter valve |
Countertop RO - 3 stage tankless reverse osmosis filter
| Benefits of countertop RO
Compact cylindrical package of 5" base, 5" height, 14" long, 7 lbs, no storage tank
Works with either chlorinated city water or well water, stainless diverter valve inlet
Equivalent quality RO water to models with storage tank described above
Stainless diverter valve lets you connect to faucets
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Stainless diverter valve
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Countertop - 3 stage RO
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RO water production rate of 50 gallons per day, or 2 gallons per hour
10" pre-carbon, 50 GPD TFC RO membrane, capillary, 10" post-carbon
UV addition - 120V/50-60Hz described below is possible
Please contact us at 1-888-928-3794 or sales@purewaterexpress.com for prices
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RO Drinking Water System Specifications
Table for impurity rejection ratio
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Storage tank capacity
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3.2 gallons for Conqueror/Gladiator, different size tanks also available
1.0 gallon for Countertop 465
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Size
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14" w, 7" d, 17" h for Conq./Glad. main unit, 12" diam and 14" h for tank
11" w, 9" d, 15" h for Countertop 465
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Feed water pressure
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40-100 psi for Conquerors/countertops without pump
5-100 psi for Gladiator/countertops with pump
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Feed water temperature
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40-80°F or 4-25°C
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Feed water pH range
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3 minimum, 9 maximum
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Total dissolved solids
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Maximum 1,200 p.p.m.
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RO water recovery
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20-25%, excellent membrane protection
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Rejection ratio
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Click for details
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Pre-filter
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5 micron sediment and/or activated carbon block, 10" long
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Post-filter
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5 micron granular activated carbon, 10" long
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In-line filter
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5 micron granular activated carbon, 10" long
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RO membrane
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CTA (cellulose tri-acetate) for chlorinated water
TFC (thin film composite) for well water
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Daily RO water
production capacity
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5-7 gal/day min., 20 gpd max. for CTA RO
10 gal/day min., 100 gpd max. for TFC RO
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