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4 and 5-stage undersink Reverse Osmosis filter systems specifically designed to reduce waste water to the drain by up to 50%. Both models use environmentally friendly Greenblock® filtration media that significantly reduce the carbon footprint when compared to traditional carbon filters.


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

GreenMachine™ Eco-Friendly Filtration Systems

Reduces waste-water. Manufactured with smaller carbon footprint.

The Vertex GreenMachine™ undersink Reverse Osmosis filter systems use high-performance, environmentally friendly, Greenblock® filtration media and are specifically designed to reduce the wastewater stream by up to 50%. The NSF and WQA certified Greenblock filters are made using eco-friendly coconut-shell greencarbon™ that is manufactured using a process which significantly reduces harmful green-house gas emissions. The 36 GPD RO membrane removes an average of 95% of the dissolved solids from the incoming water while sending up to 50% less wastewater to the drain. The GreenMachine fits under most sinks and makes clean, great tasting water whenever you need it, eliminating the need for bottled water and the negative environmental impact associated with it. Choose the 5-Stage system for cleaner and greener results.

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 PT-4G Brochure.

• Eco-Friendly Greenblock® carbon filtration
• Up to 50% less waste-water to drain
• City water pressure operates the RO membrane
• Auto shut-off valve (conserves water)
• Flow restrictor – modified capillary
• Long reach, non-airgap chrome faucet
• Feed water connector – threaded inlet adapter with metal ballvalve
• Drain connection included
• 1/4 inch flexible polyethylene tubing with JACO compression fittings
• 2 year limited warranty


Ordering InformationPart No.
4-Stage Reverse OsmosisPT-4G
5-Stage Reverse OsmosisPT-5G
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
GreenBlock Carbon Block cartridge, 2.5" x 10" CF-4100
GAC inline post filter, 2" x 10"IF-4103
36 GPD Replacement RO Membrane MF-4009
Certified 4-stage Filter Replacement Kit FK-100G
For Sales, Service or Parts, contact