Manufacturer and Distributor of Reverse Osmosis (RO) Systems, RO Membranes, and Components
     Industry Leader in RO Expertise and Membrane Applications Since 1983™
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AMI Reverse Osmosis RO Systems
Complete Reverse Osmosis RO Systems
Series L Reverse Osmosis
Reverse Osmosis Systems 300 to 19,000 Gallons/Day
For feed water TDS 500 to 1000 PPM

Designed to produce low dissolved solids water from tap or well water, these RO systems use high efficiency reverse osmosis membranes. The product water is used in applications such as spot free rinse, water stores, whole house, labs, ice makers, humidification, misting and a wide variety of other applications.

Part of the L-series family (other systems include XL and HL series), these RO systems are designed to work at pressures of 200-250 psi for higher TDS water and use TW reverse osmosis membranes. The TW RO membranes offer higher salt removal and the higher operating pressure overcomes the loss of membrane flow due to higher TDS level.

These reverse osmosis systems use the proven, reliable components and are mounted on a sturdy powder-coated metal frame. There are numerous design details learned from years of experience that are incorporated in our water filtration systems. Our process and fluid design ensures an optimum membrane life and minimizes the membrane fouling.

Key Features:

  • Over 25 years of experience is reflected in our quality

  • Compact, Heavy Duty, Powder Coated Frame

  • Proven components used throughout the system

  • Conservatively engineered for reliable long term performance

  • Factory tested to ensure trouble-free operation

Why Applied Membranes?

  • Over 10,000 commercial/industrial systems in operation

  • Our products are being used in over 100 countries worldwide

  • From packaged systems to custom engineered Reverse Osmosis systems, we can take care of your needs

  • We are one of the few companies that have the expertise to provide Reverse Osmosis systems for drinking water, boiler feed water, seawater, desalination, ultrapure water, USP water, and water reuse.

  • We have supplied more systems to more countries than most of our competitors

  • Our customers include major national and international companies in every field of application

  • We stock more components for all sizes of RO systems than any other company

  • We have earned an enviable reputation for our product quality, performance reliability and business integrity.

STANDARD EQUIPMENT

  • Thin Film Composite Membranes
  • Stainless steel membrane pressure vessels
  • 5 micron 20” cartridge filter & housing
  • Feed water temperature gauge
  • Automatic inlet feed solenoid valve
  • Permeate flowmeter
  • Concentrate flowmeter
  • Recycle flowmeter
  • System control valve
  • Recycle control valve
  • Low pressure pump protection
  • High pressure RO pump
    • Rotary Vane brass for L-12521 – L-24A
    • Stainless steel multistage for L-34A – L-124A with SS pump throttling valve
  • Automatic membrane flush
  • 4) Liquid filled pressure gauges for filter in/out and system pressures
  • Product TDS displayed on controller LED
  • System on/off with 2-level tank floats
  • Powder coated carbon steel frame
  • Boxed and palletized for shipment

L Series Reverse Osmosis RO System
Standard L Frame:  Up to L-64A

Expanded L Series Reverse Osmosis RO System
Expanded L Frame:  L-74A and Up

 
MICROPROCESSOR CONTROLLER FOR AUTOMATIC OPERATION

Monitors and/or Controls:

  • Inlet valve

  • Delayed start-up of high pressure pump

  • Feed water flush at system shut-down

  • Low pressure switch

  • On/Off with tank level

  • Permeate Quality (TDS )

  • Pre-treatment backwash/lockout

Features:

  • Backlit LED Display

  • LED indicator light for system status/alarm

  • Front panel access port for calibration of TDS sensor

  • LED indicator light for water quality (TDS)

  • Start-up and shut-down with tank level

  • Feed flush at shut-down

  • Low pressure shut-down

  • Low pressure automatic restart

  • Delayed start-up of high pressure pump

UL508A Labeled
Microprocessor Controller for Reverse Osmosis RO System
Controller Model S100

LED Display:

  • Permeate Quality (TDS)

  • Operating Status

  • Alarm Condition

 

Recommended Optional Equipment (not included)

RO System Specifications

Model

Flow Capacity

Membrane Elements Line Size (in/cm) System Dimensions (in/cm) Approx. Shipping Weight (lb/kg)
Gallons/Day m³/day Qty. Diameter (in/cm) Length (in/cm) Inlet Permeate Concentrate Length Depth Height
L-12521A-116 300 1 1 2.5/6 21/53 0.75/2 0.38/1 0.38/1 20/51 24/61 55/140 230/104
L-125A-116 600 2 1 2.5/6 40/102 0.75/2 0.38/1 0.38/1 20/51 24/61 55/140 240/109
L-225A-116 1,200 5 2 2.5/6 40/102 0.75/2 0.38/1 0.38/1 20/51 24/61 55/140 250/113
L-14A-116 1,800 7 1 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 24/61 55/140 275/125
L-24A-116 3,000 12 2 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 24/61 55/140 300/136
L-34A-216 5,500 21 3 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 32/82 55/140 325/147
L-44A-216 7,000 27 4 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 32/82 55/140 350/159
L-54A-216 8,500 32 5 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 32/82 55/140 375/170
L-64A-216 10,000 38 6 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 32/82 55/140 400/181
L-74A-216 11,500 44 7 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 40/102 55/140 441/200
L-84A-216 13,000 49 8 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 40/102 55/140 466/211
L-94A-216 14,400 55 9 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 40/102 55/140 491/223
L-104A-216 16,000 60 10 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 46/117 55/140 516/234
L-114A-216 17,300 66 11 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 46/117 55/140 541/245
L-124A-216 19,000 72 12 4/10 40/102 0.75/2 0.5/1.3 0.5/1.3 20/51 46/117 55/140 566/257

Options and Accessories Available  (order separately)  

AMI's L Series RO Systems are available with a wide variety of optional add-on equipment.  All assemblies include hardware and mounting equipment for easy upgrade to your new or existing system installation.

Expansion Kits to Meet your Future Water Requirements!
 

Will your water requirements change in the future?  L Series systems are expandable to allow for quick, easy and cost effective upgrades to systems in the field. Simply purchase and install the appropriate expansion kit assembly to increase your system capacity at any time down the road.

 

  • Single Expansion Package - with 1) 4" x 40" Membrane & Vessel Kit
    Part #:  A627
    To add a single 4"x40" RO Membrane to any L Series System.  Expansion from 6 to 7 membranes requires an extension bracket (below).
     

  • Extension Bracket for L Series System
    Part #:  A628
    To accommodate up to 12 RO Membranes.  Required when updating from 6 or less to 7 or more membranes.

Click any photo below to Enlarge

Expansion Kit for Reverse Osmosis RO System

Wall Mount Filter Cartridges

Includes mounting bracket and Isolation Valves to close the line when changing the filter cartridge. 

Part # A711  
 

Filter cartridge must be ordered separately - common options are shown below.  Any 20" Big Blue size cartridge can be installed.  Click here to view our complete filter cartridge product selection.

 

Pretreatment Options Available:
Post-treatment Options Available:
  • Calcite Filter Cartridge to neutralize the pH of the RO permeate water - Filter Model H-F4220CALCITE  Click for Product Details
  • DI Filter Cartridge with Mixed-Bed Deionization Resin for ultrapure applications - Filter Model:  H-F4220DI  Click for Product Details

Prefilter Assembly for Reverse Osmosis RO System

Softeners & Media Filtration Pre/Post Treatment

AMI Media filters feature fully automatic backwash or regeneration for easy, trouble free maintenance.  Ensure superior system operation and extended membrane life by providing proper pretreatment to the incoming feed water on a continuous basis.  Common pretreatment or post-treatment methods include:

  • Single or Twin Water Softener to remove hardness and scale.

  • Multi-Media Filter for sediment filtration to approximately 10 microns.

  • Carbon Filter to remove chlorine.

  • Calcite Filter to neutralize the pH of the RO product water.

Click Here to visit the Media Filtration section of our site for detailed information on the full line of media filtration products we carry.

Media Filter and Softener for Reverse Osmosis RO System

Chemical Injection System


Antiscalant injection as an alternative to a water softener for scale control, or

Sodium Metabisulfite injection as an alternative to a carbon filter to remove chlorine.

 

Chemical Injection for Reverse Osmosis RO System

Water Quality Monitors

Pre-packaged wall-mountable water quality monitoring controls allow you to monitor the quality of the incoming feed or RO product water.  Assembly includes the monitor, enclosure and sensor. 
 

Available Options for Monitoring Incoming Feed Water Quality:
  • ORP -  60Hz Part #  A246,  50Hz Part # A247
  • pH - 60Hz Part #  A244,  50Hz Part # A245
Available Options for Monitoring RO Product Water Quality:
  • Total Dissolved Solids (TDS)  - 60Hz Part #  A242,  50Hz Part # A243
  • Resistivity - 60Hz Part #  A248,  50Hz Part # A249
  • pH - 60Hz Part #  A244,  50Hz Part # A245

Water Quality Monitor for Reverse Osmosis RO System

Ultraviolet (UV) Systems


Add an ultraviolet water sterilizer for a 99.9% reduction of bacteria and viruses in the feed and/or permeate line. 
Note:  For feed line, wall-mount filter cartridge assembly shown above is required.

 

Ultraviolet UV Sterilization for Reverse Osmosis RO System

Tank Pressure Controls


 

To automatically turn the RO system on or off with the permeate storage tank level.  For use with a pressurized storage tank (sold separately).

  • 110v/60Hz - Part # A620

  • 220v/60Hz - Part # A621

Tank Pressure Controls for Reverse Osmosis RO System

Pressurized Storage Tank


 

Pressurized permeate storage tank available in 40 or 80 gallon volume.  Assembly includes tank, valve, piping, tubing, and pressure gauge.

  • 40 Gallon Tank Assembly - Part # A612-40

  • 80 Gallon Tank Assembly - Part # 4612-80

Tank Level Controls


 

Turns system on or off according to the water level in an atmospheric storage tank. 

  • Dual float assembly provides system on/off controls.
    Part # YFL2PPAS
     

  • Triple float assembly provides system on/off as well as low level protection on/off for a repressurization pump.
    Part # YFL3PPAS

Atmospheric storage tank and repressurization pump are sold separately.

Tank Level Controls for Reverse Osmosis RO System

Atmospheric Storage Tank

Atmospheric Permeate Storage tank.  Assembly includes bulkheads and vent filter.  For use with Tank Level Controls (sold separately).

  • 200 Gallon Part # A613-200

  • 400 Gallon Part # A613-500

Storage Tanks for Commercial RO Systems

Delivery System

20 GPM, 50 PSI, 220v/1ph/50-60Hz

Includes Pump, 40 Gallon Pressure Tank, Controls and Fittings

Part # A606-216

 

Prefilter Pressure Gauge


To allow for monitoring of the in and out pressure of the prefilter in order to indicate when the cartridge needs to be changed. Assembly includes pressure gauge and fittings.

 

Part # A623

Prefilter Pressure Gauge for Reverse Osmosis RO System

Floor Casters Kit

 

2 Locking casters and 2 Swivel casters to mount at the base of the stand for ease of system mobility.

 

Part #:  A625

Floor Casters Kit for Reverse Osmosis RO System

 

Notes:
  • All dimensions and weights are approximate.
     
  • Capacity Basis: 24 hrs/day
     
  • Systems rated at: 77°F (25°C) using 1000 ppm sodium chloride solution operating at approx. 200 psi (14 kg/cm²) pressure. For feed water with higher TDS refer to our Series HL brochure.
     
  • Minimum feed pressure to RO System:  40-60 PSI. System capacity changes significantly with water temperature
     
  • Chlorine must be removed if present in feed water prior to RO with a carbon filter.
     
  • Pretreatment for water hardness using a softener should be added to avoid scaling the membranes.
     
  • Feed water turbidity: Less than 1 NTU; Feed water silt density index (SDI): 3 maximum. If exceeded, pretreatment with media filter recommended. All pretreatment equipment and SDI test kits are available from Applied Membranes.

 

Voltage:
Above models indicate recommended voltage codes per model. Alternative voltages can be ordered using the voltage codes from the table below.
Available Voltages:
Voltage

L-12521A

L-125A

L-225A L-14A L-24A L-34A L-44A L-54A L-64A L-74A L-84A L-94A L-104A L-114A L-124A
-116 = 120V/1Ph/60Hz

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-216 = 220-240V/1Ph/60Hz

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-215 = 220-240V/1Ph/50Hz

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-236 = 240V/3Ph/60Hz

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-235 = 240V/3Ph/50Hz

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-436 = 460V/3Ph/60Hz

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Replacement Parts & Consumables for L Series Reverse Osmosis Systems


 

For prompt, courteous and reliable service, contact us today!


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