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Marlo Inc – Reverse Osmosis MRO-8H Series

Designed for industrial applications requiring high purity water (98-99% salt rejection)
Nominal output capacities of 36,000 to 432,000 GPD


The Marlo ‘MRO-8H’ Series Reverse Osmosis system is designed for industrial applications requiring high purity water (98-99% salt rejection).

Nominal output capacities of 36,000-432,000 GPD (25-300 GPM).
Flexible design allowing for easy customization to meet tight engineering specifications.

Features / Benefits:

  • High rejection, 8″ x 40″ thin-film composite (TFC) membrane elements in a spiral-wound configuration
  • FRP membrane housings with PVC end-cap material, stainless steel side-entry feed/reject ports, and white polyurethane finish. Designed for 300 psi pressure rating
  • Stainless steel multi-stage feed pump with TEFC motor (260/460V, 3-Phase)
  • NEMA-4 programmable logic controller (PLC) package complete with operator lights and switches for optimal system control. Includes pre-wired motor starter, low inlet and high pump discharge pressure switches with alarms, and pre-treatment interlock
  • Product water conductivity monitor with digital display and adjustable alarm
  • Panel-mounted product, reject, and recycle flowmeters with digital display
  • Panel-mounted stainless steel system pressure gauges and sampling valves
  • In-line system temperature indicator
  • PVC low pressure piping/valves and 304 stainless steel high pressure piping and valves
  • Automatic system inlet feed valve
  • Automatic membrane flush cycle (at programmed timed intervals)

Optional Equipment:

  • All 304/316 stainless steel process piping and valves (low and high pressure lines)
  • Premium-efficient feed pump motors
  • Inlet feed-water pH monitor/controller
  • Inlet feed-water ORP monitor/controller
  • Inlet feed-water hardness monitor
  • Inlet feed-water Silt Density Index test assembly
  • Membrane flush cycle with reverse osmosis product
  • Reverse osmosis product diversion valve
  • Touch-screen operator interface terminals in lieu of lights and switches
  • Skid-mounted membrane Clean-in-Place systems
  • Reverse osmosis system performance evaluation software packages
  • Product water storage tanks and re-pressurization pump systems
  • Multi-media, activated carbon, and water softener pre-treatments systems
  • Inlet feed-water chemical injection systems for pH adjust, dechlorination, and anti-scalant
  • Separate-bed, mixed-bed, and electro-deionization post-treatment systems


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