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 APEX MR-C Series Commercial Reverse Osmosis System - Made in USA - Hydroponics Water Filter

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APEX MR-C Series Commercial Reverse Osmosis System - Made in USA - Hydroponics Water Filter

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MR-C Series Commercial Water Filtration Systems


MR-C Series Commercial Filtration System

The APEX MR-C commercial-grade reverse osmosis water purification systems are suitable for food preparation operations like bakeries, coffee shops and restaurants as well as healthcare facilities and laboratories. The reverse osmosis system provides particle-free, mineral free mist water for supermarket produce displays, greenhouses and botanical gardens. The MR-C uses four stages of water filtration. The process starts with a 5-micron sediment filter that removes tiny particles like rust, silt and mineral scale. This prevents medical equipment, coffee makers, ice machines and other sensitive dispensing equipment from clogging. Next, the water flows through two stages of 10-micron activated carbon block cartridges. The carbon block filters remove taste and odor-causing chemicals like chlorine, chloramine, hydrogen sulfide and geosmin (earthy/musty taste & odors). The carbon cartridges also remove organic contaminants like herbicides, insecticides and THMs. The final filtration stage involves the reverse osmosis (RO) process. Here water is “squeezed” through a special membrane. Heavy metals, like lead and mercury, are removed while purified water passes through. The RO process also removes salts, nitrate, phosphate, fluoride, radon and benzene. Because water supplies often have low or variable water pressures, the MR-C comes with a rotary vane high-pressure pump to insure the filtration system works at maximum efficiency.

Inlet and outlet pressure gauges provide at-a-glance status of the system, indicating if the cartridges need to be replaced. The entire filtration system can be turned off or on with a flip of one switch. The straight-forward layout and operation of the MR-C makes it the ideal water purification system for nursing homes, educational facilities and residential buildings. Hydroponic growers will benefit from the purified low TDS water when mixing nutrient solutions. Aquarium wholesalers, retail shops and saltwater aquarists need high-purity nitrate, phosphate and heavy metal-free water for corals and sensitive fish. Wherever large quantities of high purity water are needed, the APEX MR-C reverse osmosis filtration system will do the job.

The MR-C series can be coupled with an optional ultraviolet disinfection unit that provides protection from bacteria, parasites, algae and virus contamination. We recommend installation by a licensed plumber to insure adherence to all local codes. Routine replacement of the filter cartridges is recommended to maintain filter performance. Replacement cartridges are available from APEX Water Filters.

MR-C3000 Model

MR-C4000 Model
Note: Optional features shown


Model #C1,000C1,500C2,000C3,000C4,000C6,000C8,000C10,000C15,000C20,000
Nominal Flow Rate, GPD1,0001,5002,0003,0004,0006,0008,00010,00015,00020,000
ConfigurationSingle PassSingle PassSingle PassSingle PassSingle PassSingle PassSingle PassSingle PassSingle PassSingle Pass
Standard Recovery50-75%50-75%50-75%50-75%50-75%50-75%50-75%50-75%50-75%50-75%
Membrane Elements and Housings 
Membrane Quantity11132345810
Membrane Size4021404040404021404040404040404040404040
Vessel Array1111:1:11:11:1:11:1:1:11:1:1:1:12:2:2:22:2:2:2:2
Vessel Quantity11132345810
Flow Rates and Rejection 
Nominal Salt Rejection98.5%98.5%98.5%98.5%98.5%98.5%98.5%98.5%98.5%98.5%
Minimum Concentrate Flow, gpm/lpm3/11.43/11.43/11.43/11.43/11.43/11.43/11.43/11.46/22.86/22.8
Maximum Feed Flow, gpm/lpm14/5314/5314/5314/5314/5314/5314/5314/5328/10628/106
Standard Voltage110V / 60Hz/1Ph110V / 60Hz/1Ph110V / 60Hz/1Ph110V / 60Hz/1Ph110V / 60Hz/1Ph110V / 60Hz/1Ph110V / 60Hz/1Ph220V / 60Hz/1Ph220V / 60Hz/1Ph220V / 60Hz/1Ph
Operating Parameters 
Maximum Feed Temperature, F/C90/32.290/32.290/32.290/32.290/32.290/32.290/32.290/32.290/32.290/32.2
System Connections 
Permeate, in3/8 QC3/8 QC3/8 QC3/8 QC3/8 QC1/2" MNPT1" MNPT1" MNPT1" MNPT1" MNPT
Concentrate, in3/8 QC3/8 QC3/8 QC3/8 QC3/8 QC1/2" MNPT1" MNPT1" MNPT1" MNPT1" MNPT
System Dimensions 
Length, in/cm16/40.616/40.616/40.616/40.625/63.525/63.525/63.525/63.525/63.525/63.5
Height, in/cm40/101.640/101.640/101.640/101.645/114.345/114.345/114.345/114.345/114.345/114.3
Width, in/cm25/63.525/63.525/63.525/63.525/63.525/63.525/63.525/63.550/127.050/127.0

Test Parameters: 500 ppm, De-chlorinated municipal water, 77F, 7-8 pH range, 50% of recovery. Operation pressure 125 psi. The data taken after 30 minutes of operation


  • White Powder Coated Steel Frame
  • 5 Micron 20” Sediment Pre Filter
  • 10 Micron 20" Carbon Block Pre Filter
  • Flush O Tech Brass Rotary Vane High Pressure Pump
  • Pre-Filter Pressure Gauges
  • ODP High Efficiency Carbonator Motor
  • USA Made Low Energy Membrane
  • PVC Membrane Housings
  • Manual ON/OFF Control Switch
  • Concentrate & Recycle Valves with Flow Meters
  • Feed Low Pressure Switch (to protect the Pump)
  • High Pressure Tank Switch
  • Feed Solenoid Valve
  • Stainless Steel Concentrate Valve
  • 0-300 PSI Pump Pressure Gauges
  • Quick Fittings and Stainless Fittings

Filter Stages

  • Stage 1
  • Stage 2 & 3
  • Stage 3
  • Filter Stages of APEX B1 Series Commercial Water Filter Systems for Drinking Water and Hydroponic Applications

    Recommended Setup

    Installation of an APEX WS Series Water Softener Highly Recommended to Protect Filter Membranes

    Professional Plumbing Support Required for Installation

    Water pressure can cause leaks and damage the surrounding building or fixtures if not properly installed. User must check all fittings for tightness. APEX assumes no responsibility for water damage due to leaks.

    Our Commercial Filters are Used Everywhere!

                HOME & APARTMENTS
                  NURSING HOMES
                  PET STORES
          COFFEE SHOPS
                     AND MORE...

    Enjoy Crisp Clean Refreshing Drinking Water for Your Healthy Lifestyle.

    When you choose an APEX water filter, you'll get the absolute best water filter system for your needs from a company that values your business and will go above and beyond to ensure your full satisfaction.

    Built in U.S.A

    Not only can you feel good knowing that APEX Water Filters gives Americans good-paying jobs, but you can also be certain that we carefully monitor each step in the manufacturing process because we produce our filtration systems locally.

    If for any reason you're not completely satisfied with an APEX Water Filter, we'll replace it or refund the purchase price--no questions asked.

    Quality Guaranteed

    At APEX Water Filters, we believe that the best water filters start with the best materials. That's why we only use carbon that is certified by the National Safety Foundation and components that are approved by the U.S. Food and Drug Administration.

    Before a water filtration system leaves our facility, we test it to ensure that it meets our high quality standards. This extra step ensures that you receive a filtration system in the best possible condition.

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