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Sediment Filter, 5-Micron Polyspun Cartridge
2 1/2” dia. x 10″
STAGE TWO (optional)
10 Activated Carbon Block Filter 5 Micron
2 1/2” dia. x 10″
Activated Carbon Block Filter 5 Micron
2 1/2” dia. x 10″
Reverse Osmosis Membrane
36 GPD TFC @ 65 PSI Pressure Differential
Granular Activated Carbon Post-Filter
In-Line, 2” dia. x 10”
4.0 Gallon Plastic Tank (metal tank available)
Pre-pressurized with Butyl Bladder
(2.5 gal. water capacity when full)

Shipping Weight:
4-stage 25 lb.
5-stage 28 lb.
4-stage 14”W x 6”D x 18”H
5-stage 15.5”W x 6”D x 18”H
Tank: 11″ dia. x 15.5″H

Conditions of Use
Water Must be microbiologically safe
Temperature, 40 -100 degrees F
pH Range, 3 to 10
Feed pressure, 40 to 100 psig
Maximum TDS, 1500 PPM
Turbidity, less than 1.0 NTU

Certified Reduced Contaminants

Arsenic, Barium, Cadmium, Chromium III & VI, Copper, Cysts,
Fluoride, Lead, Nitrates, Nitrites, Radium 226 & 228, Selenium, TDS, Turbidity, Tested for structural integrity, chemical extraction and reduction of contaminants

Optimized for City Water

Certified 4 & 5-Stage RO Systems

4-stage and 5-stage undersink Reverse Osmosis filter systems optimized to treat city water using the existing water pressure. These sturdy and reliable US made systems have been in the field for over 15 years and are IAPMO certified to significantly reduce 16 contaminants to NSF/ANSI 58 by the IAPMO (see list below). VERTEX
PureWaterMachines fit under most sinks and make clean, great tasting water at the point-of-use, eliminating the need for bottled water. An automatic shut-off valve conserves water by shutting the unit off when the storage tank is full.

The 5-stage system is designed to ensure water quality, membrane performance and filter life, where the incoming water contains a high amount of sediment as in some well water systems. An extra pre-filter stage is added before the membrane. This design can also be used to extend time between filter changes.

Comes complete and ready to install with dispensing faucet and instruction manual.

Download the 4-Stage system Brochure.

Download the 5-Stage system Brochure.

• Auto shut-off valve (conserves water)
• Flow restrictor – modified capillary
• Long-reach, non-airgap chrome faucet included
• Threaded feed-water adapter with metal ballvalve
• Drain connection included
• 1/4 inch flexible polyethylene tubing
• JACO compression fittings
• 2 year limited warranty


Ordering InformationPart No.
4-stage Certified 36 GPD RO SystemPT-4.0
5-stage Certified 36 GPD RO SystemPT-4.0/5
Available Options
with UV Sterilizer add /UVadd /UV
with Air Gap Faucet (meets many city's requirements)add /AG
with Metal Tankadd /MT
with Quick-Connect fittings (includes 3/8" line from tank to faucet)add /QC
with 3/8" Feed Water Adapteradd /3/8FWA
with 1/2"-3/8" John Guest Convertible Feed Water Adaptercall factory
ProTekk Water Tray and Leak Detector add LDDT-1218
Replacement Filters
5 micron Sediment cartridge, 2.5" x 10" SF-4001
Carbon Block cartridge, 2.5" x 10" (2x 5-stage)CF-4060
GAC inline post filter, 2" x 10"IF-4103
36 GPD Replacement RO Membrane MF-4009
Certified 4-stage Filter Replacement Kit FK-100
Certified 5-stage Filter Replacement Kit FK-101
For Sales, Service or Parts, contact