The S-RO series brackish water reverse osmosis machine offers a turnkey, pre-packaged solution to remove total dissolved solids. These skid-mounted systems are available in various models capable of delivering permeate at 50–450 gpm. Preprogrammed to monitor and control other unit operations, they are meant to be part of a larger flow schematic that would typically include pretreatment, transfer pumps, permeate storage tanks, and chemical feed pumps. Further, they are flexible, as we can modify them to meet requirements for specific sites and situations.


• Many options available for a configurable product to suit your needs
• The USA manufactured membrane elements
• Documentation is already available on our systems
• Pretreatment designed for a quick addition to S-RO Series RO systems including multimedia filters, water softeners and carbon filter.


• Designed with many years of experience and proven to perform
• Speed of delivery: Some units are in stock and those that do not typically take 6 weeks to deliver.

S-RO -50 S-RO -100 S-RO -150 S-RO -200
Flow Rates Permeate rate 50 gpm

(11 m3/hr)

100 gpm

(23 m3/hr)

150 gpm

(34 m3/hr)

200 gpm

(45 m3/hr)

Concentrate rate 13 gpm

(3 m3/hr)

25 gpm

(6 m3/hr)

38 gpm

8.5 m3/hr)

50 gpm

(11 m3/hr)

Concentrate Recycle 10 gpm



10 gpm

(2.3 m3/hr)

NA 15 gpm



Feed Rate 63 gpm

(14 m3/hr)

125 gpm

(28.5 m3/hr)

188 gpm

(43 m3/hr)

250 gpm

(57 m3/hr)

Performance Data Membrane quantity 12 24 36 48
Recovery 80%
Nominal rejection 97–99%
TDS (NaCl mg/L) < 2500
Design temperature 60°F (16°C)
Operating range (°C) 15–30
Operating pH 5.5–8.5
Inlet pressure (psi) 30–60
Design Feed Flow Rate 73 gpm

(17 m3/hr)

135 gpm

(31 m3/hr)

188 gpm

(43 m3/hr)

265 gpm

(60 m3/hr)

Design Boost Pressure 330 psig

(23 Bar)

275 psig

(19 Bar)

280 psig

(19.3 Bar)

240 psig

(16.5 Bar)

Installed Power 18.6 kW 30 kW 45 kW

✓ Maximum permeate rate listed at design temperature. Permeate rate will be greatly reduced with temperatures below the design temperature
✓ Guideline only—Consult UMT for help with specific ions in feed water. Consult UMT  0with system design questions. projection software is also available to help with the prediction of permeate quality