Municipal, Waste water, Hotel, Military,

Hospital, Food and beverage, Pharmaceutical,

Mining, Power and energy, Refinery, Restaurants,

Agriculture, Boiler feed, Disaster relief, and etc.

Membrane and housing

  • Membrane model: LP22-8040
  • Membrane manufacturer: Vontron
  • Membrane rejection: 97-99%
  • Housing:                                       FRP, 300psi, side port                     (for ≤ 1000ppm)                           FRP, 450psi, side port                           (for ≤ 2500ppm)

Boost pump

  • Type: vertical multi-stage centrifugal
  • Pump material: SS304 (for ≤ 500ppm)                      : SS316 (for ≤ 1000ppm)                     : SS316 (for ≤ 2500ppm)
  • Connection: DIN Flange
  • Pump brand: CNP

Electrical valve

  • Feed valve: UPVC
  • Flush valve: SS316


  • Flow meters: permeate, concentrate, concentrate recycle
  • Conductivity: permeate
  • Pressure gauge: pre-filter, post-filter, pump discharge, concentrate
  • Pressure switch: feed, RO membrane inlet

(Feed TDS < 2500 ppm).

The smart, clean, and practical industrial design of EWP-USA's PTROM Series allows for convenient installation, user-friendly operation, and ease of maintenance. These skid-mounted, packaged systems are pre-plumbed and pre-wired complete on a steel frame with panel-mounted pressure and flow instrumentation allowing for straight forward system monitoring and control. EWP-USA offers an assortment of both basic and premium designs of pure water systems that can be private labeled or customized.

PTROM Series

PTROM Series

Operating Limits

Maximum Feed Temperature:   95°F                                                  pH (Continuous):  4 ~ 9
Minimum Feed Temperature:   41°F Minimum                                     pH (Continuous):  4
Maximum Feed Pressure:  72 psi                                                       Free Chlorine:  Undetectable
Minimum Feed Pressure:  29 psi                                                        Iron:  ppm  <0.1
Maximum TDS:   ppm  1500                                                             Manganese:  ppm  <0.05
SDI:  <5                                                                                         Organic matter:  ppm  <1

EWP-USA RO Systems and Components

Options and Upgrades   

Material of construction

  • High - pressure piping: SS304 (for ≤ 500ppm)
                                   : SS316 (for ≤ 1500ppm)
                                   : SS316 (for ≤ 2500ppm)
  • Low - pressure piping: UPVC 
  • Frame: SS304
  • Control box: IP54

Connection port

  • Feed inlet port
  • Permeate port
  • Drain port
  • Clean-in-place (CIP) ports

Documentation included

  • Operation and maintenance manual
  • Drawings: P&ID, electrical diagram

Control system

  •    Siemens PLC
  •  Weinview HMI
  •  Parameter setting panel
  •  Tank level control
  •  Low pressure/High pressure protection
  •  Auto flush
  •  Pretreatment lockout control backup

PTROM Series Reverse Osmosis System        

¹Maximum permeate rate listed at temperature 77°F, Permeate rate can be reduced by 20% as temperature drops.

²Design flow rate of the pump is the sum of Feed rate and Concentrate recycle rate 

Reverse Osmosis Systems from 3.5m3/h to 10m3/h

       Your source for Commercial and Industrial RO Systems & Components

  • PLC controller
  • Feed water conductivity meter
  • pH and ORP meter
  • Grundfos/Danfoss pump
  • Dow/Hydranautics/Toray membrane
  • Easy access remote control


  • Fully equipped and customizable   
  • Individually tested and preserved
  • Expandable and skid mounted     
  • Low operation and maintenance costs
  • Components are easily accessible 
  • Easy maintenance and servicing
  • Pre-plumbed, wired and assembled  
  • 1-year limited warranty
  • Flow transmitter with pulse signal output
  • Pressure transducer with analog signal output
  • Communication: Modbus RTU
  • SS304/316 seamless housing
  • Antiscalant dosing system
  • Clean-in-place (CIP) system
  • Pretreatment system

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