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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

High Efficiency RO Systems

Install anywhere with permeate pump

Use Permeate Pump models where the water pressure is marginal (30-45 psi) and there is no power available for a booster pump. Using a non-electric permeate pump, this model recovers pressure energy from the brine discharge and forces product water to the storage tank. This reduces the membrane back pressure and increases clean-water production efficiency. In this system the normal autovalve is replaced by the permeate pump. The tank pressure will be brought to 90% of the inlet pressure (instead of 67%), thus increasing the flow from the faucet. All other specifications are the same as the PT-4.0.

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.

The permeate pump may also be ordered separately to improve performance of an already installed unit.

Download the Brochure.

• Increases efficiency without electricity
• Fills the tank up to 5 times faster
• Long-reach, non-airgap chrome faucet included
• 1/4 inch flexible polyethylene tubing with JACO compression fittings
• Threaded feed-water adapter with metal ballvalve
• Flow restrictor – modified capillary
• Drain connection included
• 1 year limited warranty


Ordering InformationPart No.
4-Stage Reverse OsmosisPT-4.0/PP
5-Stage Reverse OsmosisPT-4.0/5/PP
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" 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
For Sales, Service or Parts, contact



Install anywhere with a 4-stage or 5-stage permeate pump RO system. For use where the water pressure is marginal (30-45 psi) and there is no power available for a booster pump.